{"id":2884,"date":"2026-08-21T22:21:08","date_gmt":"2026-08-21T14:21:08","guid":{"rendered":"https:\/\/sayoon-dc.com\/blog\/dc-contactor-symbol\/"},"modified":"2026-08-21T22:21:08","modified_gmt":"2026-08-21T14:21:08","slug":"%ec%a7%81%eb%a5%98-%ec%a0%91%ec%b4%89%ea%b8%b0-%ea%b8%b0%ed%98%b8","status":"publish","type":"post","link":"https:\/\/sayoon-dc.com\/ko\/blog\/dc-contactor-symbol\/","title":{"rendered":"\uc5d4\uc9c0\ub2c8\uc5b4\ub294 \ud68c\ub85c\ub3c4\uc5d0\uc11c DC \uc811\ucd09\uae30 \uae30\ud638\ub97c \uc5b4\ub5bb\uac8c \uc77d\uc5b4\uc57c \ud558\ub294\uac00?"},"content":{"rendered":"<div class=\"b2b-article\">\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc5d4\uc9c0\ub2c8\uc5b4\ub294 ~\ub97c \uc77d\uc5b4\uc57c \ud55c\ub2e4 <strong>\uc9c1\ub958 \uc811\ucd09\uae30 \uae30\ud638<\/strong> \ucf54\uc77c\uacfc \uadf8 \ucf54\uc77c\uc774 \uc791\ub3d9\ud558\ub294 \uc811\uc810\uc744 \ud558\ub098\uc758 \uc120\uc73c\ub85c \ub41c \ubc30\uc120\ub3c4\uac00 \uc544\ub2c8\ub77c \uc815\uc758\ub41c \uc548\uc815 \uc0c1\ud0dc\ub85c \uadf8\ub9b0 \ucf54\uc77c \uc2dd\ubcc4\uc790\ub85c\uc11c. \uc774 \uae00\uc5d0\uc11c\ub294 \ub3c4\uba74 \uad00\ub840\uc5d0 \ub530\ub77c \ucf54\uc77c \ubaa8\uc591\uc774 \uc5b4\ub5bb\uac8c \ub2e4\ub978\uc9c0, NO \ubc0f NC \uc548\uc815 \uc0c1\ud0dc\uac00 \uc5b4\ub5bb\uac8c \uc791\ub3d9\ud558\ub294\uc9c0, \uc8fc \uc811\uc810\uacfc \ubcf4\uc870 \uc811\uc810\uc774 \ud398\uc774\uc9c0\uc5d0\uc11c \uc5b4\ub5bb\uac8c \uac08\ub77c\uc9c0\ub294\uc9c0, \uadf8\ub9ac\uace0 SAYOON \uc811\uc810 \ud615\uc2dd\uacfc \uc77c\uce58\uc2dc\ud0a4\uae30 \uc804\uc5d0 \ub3c4\uba74\uc744 \ud655\uc778\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/p>\n<nav class=\"b2b-toc\" style=\"background:#f5f8fa;padding:16px 20px;border-radius:8px;margin:0 0 24px\">\n<h2 id=\"contents\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">\ucf58\ud150\uce20<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a href=\"#what-does-a-dc-contactor-symbol-actually-represent\">DC \uc811\ucd09\uae30 \uae30\ud638\ub294 \uc2e4\uc81c\ub85c \ubb34\uc5c7\uc744 \ub098\ud0c0\ub0b4\ub294\uac00?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#how-do-coil-symbols-differ-on-iec-and-ansi-style-drawings\">IEC \ubc0f ANSI \uc2a4\ud0c0\uc77c \ub3c4\uba74\uc5d0\uc11c \ucf54\uc77c \uae30\ud638\ub294 \uc5b4\ub5bb\uac8c \ub2e4\ub985\ub2c8\uae4c?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#how-should-you-read-no-and-nc-contact-symbols\">NO \ubc0f NC \uc811\uc810 \uae30\ud638\ub294 \uc5b4\ub5bb\uac8c \uc77d\uc5b4\uc57c \ud569\ub2c8\uae4c?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#how-do-main-contacts-differ-from-auxiliary-contacts-on-the-drawing\">\ub3c4\uba74\uc5d0\uc11c \uc8fc\uc811\uc810(Main Contact)\uacfc \ubcf4\uc870\uc811\uc810(Auxiliary Contact)\uc740 \uc5b4\ub5bb\uac8c \ub2e4\ub985\ub2c8\uae4c?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#how-do-engineers-verify-a-contactor-symbol-before-wiring-or-buying\">\uc5d4\uc9c0\ub2c8\uc5b4\ub294 \ubc30\uc120\ud558\uac70\ub098 \uad6c\ub9e4\ud558\uae30 \uc804\uc5d0 \uc5b4\ub5bb\uac8c \uc811\ucd09\uae30 \uae30\ud638(Contactor Symbol)\ub97c \uac80\uc99d\ud569\ub2c8\uae4c?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#which-sayoon-product-fits-an-no-or-nc-contactor-drawing\">NO \ub610\ub294 NC \ucee8\ud0dd\ud130 \ub3c4\uba74\uc5d0 \ub9de\ub294 SAYOON \uc81c\ud488\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#faq\">\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/a><\/li>\n<\/ul>\n<\/nav>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/sayoon-dc.com\/wp-content\/uploads\/2026\/08\/feat-dc-contactor-symbol.webp\" alt=\"\ud68c\ub85c\ub3c4 \uc704\uc758 DC \uc811\ucd09\uae30 \uae30\ud638\uc640 \uc2e4\uc81c DC \uc811\ucd09\uae30\ub97c \ub098\ub780\ud788 \uc77d\uace0 \uc788\ub294 \uc5d4\uc9c0\ub2c8\uc5b4\"><\/figure>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"what-does-a-dc-contactor-symbol-actually-represent\">DC \uc811\ucd09\uae30 \uae30\ud638\ub294 \uc2e4\uc81c\ub85c \ubb34\uc5c7\uc744 \ub098\ud0c0\ub0b4\ub294\uac00?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">DC \uc811\ucd09\uae30 \uae30\ud638\ub294 \ud574\ub2f9 \ubd80\ud488\ub4e4\uc774 \uc11c\ub85c \ub2e4\ub978 \ub3c4\uba74\uc5d0 \uc704\uce58\ud574 \uc788\ub354\ub77c\ub3c4 \ud558\ub098\uc758 \ucf54\uc77c\uacfc \uadf8 \ucf54\uc77c\uc774 \uc791\ub3d9\uc2dc\ud0a4\ub294 \uc811\uc810\uc744 \ud568\uaed8 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc54c\uae30 \uc27d\uac8c \ub9d0\ud574, \ucf54\uc77c\uc740 \uc81c\uc5b4\uc6a9 \u201c\uc790\uc11d\u201d\uc774\uace0, \uc811\uc810 \uadf8\ub9bc\uc740 \uadf8\uac83\uc774 \uc5f4\uac70\ub098 \ub2eb\ub294 \uc2a4\uc704\uce58\uc785\ub2c8\ub2e4. \uad50\uc721\uc6a9 \ud68c\ub85c\ub3c4 \uac15\uc88c\ub294 \ucf54\uc77c, \uc8fc\uc811\uc810, \uadf8\ub9ac\uace0 \ucf54\uc77c \ubcf8\uccb4\uc640 \uba40\ub9ac \ub5a8\uc5b4\uc838 \uadf8\ub824\uc9c8 \uc218 \uc788\ub294 \ubcf4\uc870 \uc811\uc810\uc774\ub77c\ub294 3\ubd80\ub85c \uad6c\uc131\ub41c \uad6c\uc870\ub97c \uba85\ud655\ud558\uac8c \uc124\uba85\ud569\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\ucc38\uc870 \uba85\uce6d\uc740 \ucf54\uc77c\uc5d0 \uc18d\ud574\uc57c \ud569\ub2c8\ub2e4. \ub2e4\ub978 \uacf3\uc5d0 \uc788\ub294 \uc811\uc810\ub4e4\uc740 \ub3d9\uc77c\ud55c \ud0dc\uadf8\ub97c \uc0c1\uc18d\ubc1b\uc73c\ubbc0\ub85c \ub7f0\uc774\ub098 \ud398\uc774\uc9c0\ub97c \ub118\uc5b4 \uc774\uc57c\uae30\ub97c \ub2e4\uc2dc \uc5f0\uacb0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc810\uc120\uc740 \ub54c\ub54c\ub85c \uc811\uc810\uc774 \ucf54\ub4e4\uacfc \uae30\uacc4\uc801\uc73c\ub85c \uc5f0\uacb0\ub418\uc5b4 \uc788\uc74c\uc744 \uc554\uc2dc\ud558\uc9c0\ub9cc, \ud398\uc774\uc9c0\uc758 \uadfc\uc811\uc131\uc774 \uc544\ub2c8\ub77c \ud0dc\uadf8\uac00 \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \uc5f0\uacb0\uace0\ub9ac\uc785\ub2c8\ub2e4.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/sayoon-dc.com\/wp-content\/uploads\/2026\/08\/body-symbol-anatomy.webp\" alt=\"\uc2e4\uc81c \uc7a5\uce58 \uc606\uc5d0 \ud45c\uc2dc\ub41c DC \uc811\ucd09\uae30 \ucf54\uc77c \ubc0f \uc811\uc810 \uae30\ud638\"><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">OEM\uc774 DC \uc9c0\uac8c\ucc28 \ub610\ub294 UPS \ud328\ub110 \ub3c4\uba74\uc744 \uac80\ud1a0\ud560 \ub54c \uccab \ubc88\uc9f8 \uc791\uc5c5\uc740 \uc804\uc120 \uc0c9\uc0c1\uc774\ub098 \ub2e8\uc790 \ub098\uc0ac\ub97c \ub17c\uc758\ud558\uae30 \uc804\uc5d0 \ud574\ub2f9 \ud0dc\uadf8\uc758 \ubaa8\ub4e0 \uc778\uc2a4\ud134\uc2a4\ub97c \ucc3e\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<div class=\"b2b-table-scroll\" role=\"region\" aria-label=\"\uc2a4\ud06c\ub864 \uac00\ub2a5\ud55c \ub370\uc774\ud130 \ud14c\uc774\ube14\" tabindex=\"0\" style=\"width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 18px\">\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\uae30\ud638 \uc694\uc18c<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\uadf8\uac83\uc774 \ub2f9\uc2e0\uc5d0\uac8c \ub9d0\ud574\uc8fc\ub294 \uac83<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\ub9d0\ud574\uc8fc\uc9c0 \uc54a\ub294 \uac83<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\ucf54\uc77c \uadf8\ub798\ud53d + \ud0dc\uadf8<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc5b4\ub5a4 \uae30\uae30\uac00 \ud1b5\uc804\ub418\uc5b4 \uc788\ub098\uc694?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\ubd80\ud558 \uc804\ub958 \uc815\uaca9<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc5f0\ub77d\ucc98 \uadf8\ub798\ud53d<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc815\uc9c0 \uc2dc \/ \uc791\ub3d9 \uc2dc \uc0c1\ud0dc \uc804\ud658<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\ucf00\uc774\ube14 \uaddc\uaca9 \ub610\ub294 \ud4e8\uc988 \uaddc\uaca9<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc885\ub2e8 \ud45c\uc2dc(\ud45c\uc2dc\ub41c \uacbd\uc6b0)<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc608\uc0c1 \uc5f0\uacb0 \uc9c0\uc810<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc124\uce58\ub41c \ubaa8\ub378\uc774 \uc77c\uce58\ud55c\ub2e4\ub294 \uc99d\uac70<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"how-do-coil-symbols-differ-on-iec-and-ansi-style-drawings\">IEC \ubc0f ANSI \uc2a4\ud0c0\uc77c \ub3c4\uba74\uc5d0\uc11c \ucf54\uc77c \uae30\ud638\ub294 \uc5b4\ub5bb\uac8c \ub2e4\ub985\ub2c8\uae4c?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">\ucf54\uc77c \ubaa8\uc591\uc740 \ub3c4\uba74 \uad00\ub840\ub97c \ub530\ub985\ub2c8\ub2e4. \ub9ce\uc740 IEC \uc2a4\ud0c0\uc77c \ub3c4\uba74\uc740 \uc9c1\uc0ac\uac01\ud615\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc18\uba74, \ubd81\ubbf8 \uc81c\uc5b4 \ub3c4\uba74\uc740 \ub77c\ubca8\uc774 \ubd99\uc740 \uc6d0\uc744 \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uadf8 \ucc28\uc774\ub294 \uc81c\ud488 \ubb3c\ub9ac \uc18d\uc131\uc758 \ucc28\uc774\uac00 \uc544\ub2c8\ub77c \uc5b8\uc5b4\uc801 \uc120\ud0dd\uc5d0 \ubd88\uacfc\ud569\ub2c8\ub2e4. \ud45c\uc900 \uac04 \ucc38\uc870\uc5d0\uc11c\ub3c4 \uc811\ucd09\uae30 \ucf54\uc77c\uc740 \uadfc\ucc98\uc5d0 \uc7a5\uce58 \ub610\ub294 \ub2e8\uc790 \uc8fc\uc11d\uc774 \uc788\ub294 \uc778\uc2dd \uac00\ub2a5\ud55c \uc561\ucd94\uc5d0\uc774\ud130 \uae30\ud638\ub85c \ud45c\uc2dc\ub429\ub2c8\ub2e4. IEC 60617 \uc2a4\ud0c0\uc77c \ub77c\uc774\ube0c\ub7ec\ub9ac\uc640 ANSI\/IEEE \uc2a4\ud0c0\uc77c \ub77c\uc774\ube0c\ub7ec\ub9ac \ubaa8\ub450 \uc11c\ub85c \ub2e4\ub978 \uc678\ud615\uc73c\ub85c \ub3d9\uc77c\ud55c \uc811\ucd09\uae30 \uae30\ub2a5\uc744 \uc124\uba85\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">DC \ud328\ub110\uacfc \uad00\ub828\ud558\uc5ec \ub450 \ubc88\uc9f8\ub85c \uc54c\uc544\ub450\uc5b4\uc57c \ud560 \uc810\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc77c\ubd80 \ubd81\ubbf8 \uc9c0\uc5ed\uc758 \ubcf4\ud638 \uc911\uc2ec \ub3c4\uba74\uc5d0\uc11c\ub294 \uc7a5\uce58 \uae30\ub2a5 \ubc88\ud638\ub97c \uc0ac\uc6a9\ud558\ub294\ub370, \uc774 \ubc88\ud638 \uccb4\uacc4\uc5d0\uc11c\ub294 AC \uc2a4\uc704\uce6d \uc7a5\uce58\uc640 DC \uc2a4\uc704\uce6d \uc7a5\uce58\uc758 \ubc88\ud638\uac00 \ub2e4\ub97c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ubc88\ud638\ub294 SAYOON \uce74\ud0c8\ub85c\uadf8 \ucf54\ub4dc\uac00 \uc544\ub2c8\ub77c \ub3c4\uba74\uc0c1\uc758 \uc6a9\uc5b4\ub85c \ucde8\uae09\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uacf5\uae09\uc5c5\uccb4 \ub3c4\uba74\uc5d0\uc11c \ucf54\uc77c\uc774 \uc9c1\uc0ac\uac01\ud615 \ub300\uc2e0 \uc6d0\ud615\uc73c\ub85c \ub418\uc5b4 \uc788\uc5b4 \u201c\uc798\ubabb\ub41c\u201d \uac83\ucc98\ub7fc \ubcf4\uc778\ub2e4\uba74, \uc790\uc7ac\uba85\uc138\uc11c(BOM)\ub97c \ub2e4\uc2dc \uc791\uc131\ud558\uae30 \uc804\uc5d0 \ud45c\uc81c\ub780\uacfc \ubc94\ub840\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624. \ud63c\ud569 \uc218\ucd9c \ud504\ub85c\uc81d\ud2b8\uc5d0\ub294 \uc885\uc885 \ub450 \uac00\uc9c0 \ub3c4\uba74 \ud45c\uae30 \ubc29\uc2dd\uc774 \ud558\ub098\uc758 \ud328\ud0a4\uc9c0\uc5d0 \ud568\uaed8 \ud3ec\ud568\ub418\uc5b4 \ub4e4\uc5b4\uc635\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\ub450 \ubc88\uc9f8 \uc77d\uae30 \ub2e8\uc11c\ub294 <strong>\uc811\ucd09\uae30 \ucf54\uc77c \uae30\ud638<\/strong> \uc5b4\ub178\ud14c\uc774\uc158: \ucf54\uc77c \uc804\uc555 \uba54\ubaa8, A1\/A2 \ud45c\uc2dc \ub610\ub294 \ud0dc\uadf8 \uc544\ub798\uc758 \uac04\ub2e8\ud55c \uc124\uba85. \uc774\ub7ec\ud55c \uba54\ubaa8\ub294 \uc81c\uc5b4 \uc18c\uc2a4\ub97c \uc811\uc810\uc774 \ub530\ub974\ub294 \uc561\ucd94\uc5d0\uc774\ud130\uc5d0 \ubc14\uc778\ub529\ud569\ub2c8\ub2e4.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"how-should-you-read-no-and-nc-contact-symbols\">NO \ubc0f NC \uc811\uc810 \uae30\ud638\ub294 \uc5b4\ub5bb\uac8c \uc77d\uc5b4\uc57c \ud569\ub2c8\uae4c?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">NO\ub294 \ub3c4\uba74\uc758 \uc815\uc758\ub41c \ud734\uc9c0 \uc0c1\ud0dc\uc5d0\uc11c \uac1c\ubc29\ub428\uc744 \uc758\ubbf8\ud558\uace0, NC\ub294 \ub3d9\uc77c\ud55c \ud734\uc9c0 \uc0c1\ud0dc\uc5d0\uc11c(\ubcf4\ud1b5 \ucf54\uc77c\uc758 \uc804\uc6d0\uc774 \ucc28\ub2e8\ub41c \uc0c1\ud0dc\uc5d0\uc11c) \ub2eb\ud798\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc804\ubb38\uc801\uc73c\ub85c \u201c\ud1b5\uc0c1\uc801\uc73c\ub85c(normally)\u201d\ub780 \uae30\uacc4\uac00 \ud558\ub8e8 \uc911 \ub300\ubd80\ubd84 \ud589\ud558\ub294 \ub3d9\uc791\uc774 \uc544\ub2c8\ub77c \ubc94\ub840\uc0c1\uc758 \ube44\uc791\ub3d9(unactuated) \uae30\uacc4\uc801 \uc0c1\ud0dc\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc54c\uae30 \uc27d\uac8c \ub9d0\ud574, \uc0c1\uc2dc \uac1c\ubc29(normally open) \uc811\uc810\uc740 \ucf54\uc77c\uc774 \ub04c\uc5b4\ub2f9\uae38 \ub54c\uae4c\uc9c0 \uc5f4\ub9b0 \ucc44\ub85c \ub300\uae30\ud558\uace0, \uc0c1\uc2dc \ud3d0\uc1c4(normally closed) \uc811\uc810\uc740 \ucf54\uc77c\uc774 \ub04c\uc5b4\ub2f9\uae38 \ub54c\uae4c\uc9c0 \ub2eb\ud78c \ucc44\ub85c \ub300\uae30\ud569\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc77c\ubc18\uc801\uc778 IEC \uc2a4\ud0c0\uc77c\uc758 \ubcf4\uc870 \uc811\uc810 \ubc88\ud638 \ub9e4\uae30\uae30\ub294 13\/14\uc640 \uac19\uc740 NO(\ud3c9\uac00\uac1c) \uc30d\uacfc 21\/22\uc640 \uac19\uc740 NC(\ud3c9\uac00\ud3d0) \uc30d\uc744 \uc790\uc8fc \ubcf4\uc5ec\uc8fc\uc9c0\ub9cc, \ub3c4\uc2dd\uc801\uc778 \ud734\uc9c0 \uc0c1\ud0dc(rest state)\uac00 \uc5ec\uc804\ud788 \uc6b0\uc120\ud569\ub2c8\ub2e4. \ubcf4\uc720 \uc911\uc778 \ubaa8\ub378\uc758 \uae30\uae30 \ub3c4\uba74\uc5d0\uc11c \ubc88\ud638\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/sayoon-dc.com\/wp-content\/uploads\/2026\/08\/body-no-nc-symbol.webp\" alt=\"\ub3c4\uba74\uc5d0\uc11c \ube44\uad50\ub41c \uc0c1\uc2dc \uac1c\ubc29\ud615 \ubc0f \uc0c1\uc2dc \ud3d0\uc1c4\ud615 \uc811\ucd09\uae30 \uc811\uc810 \uae30\ud638\"><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc870\ub2ec \uc2e4\uc218\ub294 \ubc14\uc774\uc5b4\uac00 \u201c\ub178\uba40\ub9ac \ud074\ub85c\uc988\ub4dc(normally closed)\u201d\ub77c\ub294 \ub9d0\uc744 \ub4e3\uace0 \uacf5\uc7a5\uc774 \uac00\ub3d9\ub420 \ub54c\ub9c8\ub2e4 \ubd80\ud558\uc5d0 \uc804\uc6d0\uc774 \uacf5\uae09\ub418\uc5b4\uc57c \ud55c\ub2e4\uace0 \uac00\uc815\ud560 \ub54c \uc2dc\uc791\ub429\ub2c8\ub2e4. \ubc30\ud130\ub9ac \ucc28\ub2e8 \uc2a4\ucf00\uce58\uc5d0\uc11c \uc774\ub7ec\ud55c \uc624\ub3c5\uc740 \ub204\uad70\uac00 \ub370\uc774\ud130\uc2dc\ud2b8\ub97c \uc5f4\uc5b4\ubcf4\uae30\ub3c4 \uc804\uc5d0 \uc758\ub3c4\ub41c \ud398\uc77c(fail) \ub3d9\uc791\uc744 \ubc18\ub300\ub85c \ub4a4\ubc14\uafc0 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<blockquote>\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>\ud301:<\/strong> \ub3c4\uba74\uc5d0 \uae30\uacc4\uc801\uc73c\ub85c \uc5f0\ub3d9\ub41c \uc811\uc810\uc774 \ud45c\uc2dc\ub418\uc5b4 \uc788\ub294 \uacbd\uc6b0, \uae30\uacc4\uc801\uc73c\ub85c \uc5f0\ub3d9\ub41c \uc811\uc810 \uc694\uc18c\uc5d0 \uc0ac\uc6a9\ub418\ub294 \ud2b9\ucc44\ub41c \uc774\uc911\uc120\/\ucc44\uc6cc\uc9c4 \uc6d0 \uae30\ud638(cue)\ub97c \ucc3e\uc73c\uc2ed\uc2dc\uc624. \ud574\ub2f9 \ud45c\uc2dc\ub294 \ubaa8\ub4e0 \uc811\ucd09\uae30 \uae30\ud638\uc5d0 \ubd99\ub294 \uc77c\ubc18\uc801\uc778 \uc7a5\uc2dd\uc774 \uc544\ub2c8\ub77c \uc811\uc810 \uc870\uc815\uc5d0 \ub300\ud55c \ubb38\uc11c\uc0c1\uc758 \uc8fc\uc7a5\uc785\ub2c8\ub2e4. \ucd9c\ucc98: IEC \uc811\ucd09\uae30 \ubcf4\uc870 \ud45c\uc900 \ubd80\uc18d\uc11c\uc5d0 \ub530\ub978 \uae30\uacc4\uc801\uc73c\ub85c \uc5f0\ub3d9\ub41c \uc811\uc810 \ud45c\uc2dc\uc5d0 \ub300\ud55c GT Engineering \ud1a0\ub860.<\/p>\n<\/blockquote>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"how-do-main-contacts-differ-from-auxiliary-contacts-on-the-drawing\">\ub3c4\uba74\uc5d0\uc11c \uc8fc\uc811\uc810(Main Contact)\uacfc \ubcf4\uc870\uc811\uc810(Auxiliary Contact)\uc740 \uc5b4\ub5bb\uac8c \ub2e4\ub985\ub2c8\uae4c?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc8fc \uc811\uc810\uc740 \ubd80\ud558 \uc2a4\uc704\uce6d \uacbd\ub85c\uc774\uace0, \ubcf4\uc870 \uc811\uc810\uc740 \ub300\uac1c \ub3d9\uc77c\ud55c \ucf54\uc77c \ud0dc\uadf8\uc5d0 \uc5f0\uacb0\ub41c \uc2e0\ud638, \uc790\uae30\uc720\uc9c0 \ub610\ub294 \uc778\ud130\ub85d \uacbd\ub85c\uc785\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\ub9ce\uc740 \uc0b0\uc5c5\uc6a9 \ub3c4\uba74\uc5d0\uc11c \uc804\ub825 \uc811\uc810\uc740 \ub354 \uad75\uc740 \uc120\uc73c\ub85c \uadf8\ub824\uc9c0\ub294 \ubc18\uba74, \ubcf4\uc870 \uc811\uc810\uc740 \ub354 \uc587\uc740 \uc120 \ub450\uaed8\ub098 \ub2e4\ub978 \ub2e8\uc790 \ub4f1\uae09\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub3d9\uc77c\ud55c a\uc811\uc810(NO)\/b\uc811\uc810(C) \uae30\ud558\ud559\uc801 \ud615\ud0dc\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uc811\uc810 \ubaa8\uc591 \uc790\uccb4\ub294 \uc81c\uc5b4 \ub9b4\ub808\uc774 \uc811\uc810\uacfc \ub3d9\uc77c\ud574 \ubcf4\uc77c \uc218 \uc788\uc73c\uba70, \ud0dc\uadf8\uc640 \ud68c\ub85c \ubb38\ub9e5\uc744 \ud1b5\ud574 \uc0c1\uc704 \uc7a5\uce58\ub97c \uc2dd\ubcc4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\ubc30\uc120 \uad50\uc0ac\ub4e4\uc774 \uac15\uc870\ud558\ub294 \uc815\uc2e0\uc801 \ubd84\ub9ac\ub97c \uc720\uc9c0\ud558\ub77c: \ucf54\uc77c \ud68c\ub85c\ub294 \uc81c\uc5b4\uc6a9\uc774\uace0, \uc8fc \uc811\uc810\uc740 \uc804\ub825\uc6a9\uc774\ub2e4. \uace0\uc804\ub958 \ubd80\ud558 \uacbd\ub85c \uc606\uc5d0 \uc800\uc804\uc555 \ucf54\uc77c\uc774 \uc788\ub294 \uac83\uc740 \uc124\uacc4 \ub3c4\uba74 \uc624\ub958\uac00 \uc544\ub2c8\ub77c \uc815\uc0c1\uc774\ub2e4.<\/p>\n<div class=\"b2b-table-scroll\" role=\"region\" aria-label=\"\uc2a4\ud06c\ub864 \uac00\ub2a5\ud55c \ub370\uc774\ud130 \ud14c\uc774\ube14\" tabindex=\"0\" style=\"width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 18px\">\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\uc77d\uae30 \ub2e8\uc11c<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\uc8fc\uc694 \uc5f0\ub77d\ucc98<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\ubcf4\uc870 \uc811\uc810<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc77c\ubc18\uc801\uc778 \uc9c1\uc5c5<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">DC \ubd80\ud558 \uacbd\ub85c\ub97c \uc5f0\uacb0\ud558\uac70\ub098 \ucc28\ub2e8\ud569\ub2c8\ub2e4.<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\ud53c\ub4dc\ubc31, \ud640\ub529, \uc778\ud130\ub85d, \uc778\ub514\ucf00\uc774\uc158<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc77c\ubc18 \ud45c\uc2dc<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\ub354 \ubb34\uac70\uc6b4 \uc804\uc2e0\uc8fc; \uc120\ub85c\/\ubd80\ud558\uce21 \ucc38\uace0\uc0ac\ud56d<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\ub77c\uc774\ud130 NO\/NC; 13\/14 \ub610\ub294 21\/22\uc640 \uac19\uc740 \uc30d<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc624\ub3c5 \uc2dc \uace0\uc7a5 \ubaa8\ub4dc<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc798\ubabb\ub41c \uc804\uc6d0 \uc804\ud658 \uc608\uc0c1<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\uc798\ubabb\ub41c PLC \ud53c\ub4dc\ubc31 \ub610\ub294 \uc790\uae30\uc720\uc9c0 \ub3d9\uc791<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin:0 0 16px;line-height:1.7\">DC \ud328\ub110 \uc791\uc5c5\uc758 \uacbd\uc6b0, \uadf8 \ubd84\ud560\uc740 \ub610\ud55c \uc120\uc815 \ub300\ud654\ub97c \ubcf4\ud638\ud569\ub2c8\ub2e4: a <strong>\uc0c1\uc2dc \uac1c\ubc29 \uc811\ucd09\uae30<\/strong> \uba54\uc778 \uacbd\ub85c\uc5d0 \ub300\ud55c \uc591\uc2dd\uc740 \ub3d9\uc77c\ud55c \ud0dc\uadf8\uc5d0 \ub300\ud55c \ubcf4\uc870 \uc804\uc6a9 \ud53c\ub4dc\ubc31 \ub2c8\uc988\uc640\ub294 \ub2e4\ub978 \uad6c\ub9e4 \uacb0\uc815\uc785\ub2c8\ub2e4.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"how-do-engineers-verify-a-contactor-symbol-before-wiring-or-buying\">\uc5d4\uc9c0\ub2c8\uc5b4\ub294 \ubc30\uc120\ud558\uac70\ub098 \uad6c\ub9e4\ud558\uae30 \uc804\uc5d0 \uc5b4\ub5bb\uac8c \uc811\ucd09\uae30 \uae30\ud638(Contactor Symbol)\ub97c \uac80\uc99d\ud569\ub2c8\uae4c?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc811\ucd09\uae30 \uae30\ud638\ub97c \ubc30\uc120\ub3c4\ub85c \ucde8\uae09\ud558\uae30 \uc804\uc5d0 \ubc94\ub840, \uc548\uc815 \uc0c1\ud0dc, \ucf54\uc77c \ud0dc\uadf8 \ubc0f \ucf54\uc77c \ub2e8\uc790\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc81c\ubaa9 \ube14\ub85d\uacfc \uae30\ud638 \ubc94\ub840\ub85c \uc2dc\uc791\ud558\uc2ed\uc2dc\uc624. \ud3ec\ub7fc\uacfc \ud604\uc7a5 \uc2a4\ub808\ub4dc\ub294 \uae30\uc5c5\uc774\ub098 \uc9c0\uc5ed \uac04\uc5d0 \uad00\ub840\uac00 \ub2ec\ub77c\uc9c8 \ub54c \uc0ac\ub78c\ub4e4\uc774 \uc5bc\ub9c8\ub098 \ube68\ub9ac \uc758\ubbf8\ub97c \ub9cc\ub4e4\uc5b4\ub0b4\ub294\uc9c0 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4. \ubc94\ub840\ub294 \uc7ac\uc791\uc5c5\ubcf4\ub2e4 \ube44\uc6a9\uc774 \uc801\uac8c \ub4ed\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\ub2e4\uc74c\uc73c\ub85c, \ucf54\uc77c\uc758 \ucc38\uc870 \uba85\uce6d\uc744 \uacf5\uc720\ud558\ub294 \ubaa8\ub4e0 \uc811\uc810\uc744 \uc218\uc9d1\ud558\uc2ed\uc2dc\uc624. \ubaa8\uc591\uc774 \ube44\uc2b7\ud558\ub2e4\uace0 \ud574\uc11c \uc11c\ub85c \uc778\uc811\ud55c \ub450 \ucf54\uc77c\uc774 \ub3d9\uc77c\ud55c \uc7a5\uce58\ub77c\uace0 \uac00\uc815\ud558\uc9c0 \ub9c8\uc2ed\uc2dc\uc624.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uadf8\ub7f0 \ub2e4\uc74c A1\/A2\ub97c \uc804\ub825 \uc804\uc2e0\uc8fc\uc5d0\uc11c \ubd84\ub9ac\ud558\uc2ed\uc2dc\uc624. \ud754\ud55c \u201c\uac00\ub77c\uc9c0 \uc800\ub110(Garage Journal)\u201d \uc2a4\ub808\ub4dc\uc5d0\uc11c \uc6d0\uc791\uc131\uc790\uc758 \uc7a5\uc560\ubb3c\uc740 \uc815\ud655\ud788 \uadf8 \uc810\uc774\uc5c8\uc2b5\ub2c8\ub2e4. \u201cA1\uacfc A2\u2026\ub294 \ub0b4\uac00 \uc54c\uc544\ub0b4\ub824\uace0 \uc2dc\ub3c4\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.\u201d \ub313\uae00\ub4e4\uc740 A1\/A2\ub97c \uba54\uc778 \ub77c\uc778\/\ubd80\ud558 \uacbd\ub85c\uac00 \uc544\ub2cc, \uc81c\uc5b4 \ud68c\ub85c\uc5d0 \uc758\ud574 \uc81c\uc5b4\ub418\ub294 \ucf54\uc77c\ub85c \uc62c\ubc14\ub974\uac8c \uaddc\uc815\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/sayoon-dc.com\/wp-content\/uploads\/2026\/08\/body-verify-drawing.webp\" alt=\"\ud68c\ub85c\ub3c4\uc640 \ub300\uc870\ud558\uc5ec \uc811\ucd09\uae30 \ucf54\uc77c \ub2e8\uc790\ub97c \ud655\uc778\ud558\ub294 \uc5d4\uc9c0\ub2c8\uc5b4\"><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc81c\ud488 \ubb38\uc11c \ub300\uc870\ub85c \ub9c8\ubb34\ub9ac\ud569\ub2c8\ub2e4: \ud68c\ub85c\ub3c4\ub294 \uae30\ub2a5\uc744 \uc124\uba85\ud558\uace0, \uc120\uc815\ub41c \ubaa8\ub378\uc758 \ub2e8\uc790\ub3c4\uc640 \uc811\uc810 \ud615\ud0dc\ub294 \ud558\ub4dc\uc6e8\uc5b4\ub97c \ud655\uc778\ud574 \uc90d\ub2c8\ub2e4. \uc2ec\ubcfc \ucc28\ud2b8\ub9cc\uc73c\ub85c\ub294 \ub2e8\ub3c5\uc73c\ub85c \uc640\uc774\uc5b4 \uacb0\uc120\uc744 \uc2b9\uc778\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n<blockquote>\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>\ud604\uc7a5\uc5d0\uc11c:<\/strong> \ub3c5\uc790\ub4e4\uc774 \uc811\ucd09\uae30 \ub3c4\uba74\uc5d0\uc11c \ub9c9\ud790 \ub54c\ub294 \ub300\uac1c \ucf54\uc77c \ub2e8\uc790 \ubd80\ubd84\uc5d0\uc11c \ub9c9\ud788\uac70\ub098, \uc8fc\ubcc0\uc758 \uc678\uacfd\uc120\uc774 \u201c\ubc30\uc120'\uc778\uc9c0 \uc544\ub2c8\uba74 \ub2e8\uc21c\ud55c \uae30\uae30 \uc2e4\ub8e8\uc5e3\uc778\uc9c0 \ud5f7\uac08\ub9b4 \ub54c\uc785\ub2c8\ub2e4. \uba3c\uc800 \ucf54\uc77c \uacbd\ub85c\ub97c \ud574\uacb0\ud55c \ub2e4\uc74c, \uba85\uc2dc\ub41c \uc548\uc815 \uc0c1\ud0dc\uc5d0 \ub9de\ucdb0 A\uc811\uc810(NO)\/B\uc811\uc810(NC)\uc744 \ub2e4\uc2dc \uc77d\uc5b4\ubcf4\uc138\uc694. \ucd9c\ucc98: \uac1c\ub7ec\uc9c0 \uc800\ub110(Garage Journal) \uc811\ucd09\uae30 \ud68c\ub85c\ub3c4 \uc2a4\ub808\ub4dc.<\/p>\n<\/blockquote>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc2e4\uc81c \uac80\uc99d \uc21c\uc11c:<\/p>\n<ol style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\">\uc804\uc124 \ubc0f \uc77c\ubc18 \uc870\uac74<\/li>\n<li style=\"margin:0 0 8px\">\ucf54\uc77c \ud0dc\uadf8 \ubc0f \uc0c1\ud638 \ucc38\uc870<\/li>\n<li style=\"margin:0 0 8px\">NO\/NC \uc548\uc815\uc0c1\ud0dc \uadf8\ub798\ud53d<\/li>\n<li style=\"margin:0 0 8px\">\uc8fc\uc694 \ucee8\ud14d\uc2a4\ud2b8 \ub300 \ubcf4\uc870 \ucee8\ud14d\uc2a4\ud2b8<\/li>\n<li style=\"margin:0 0 8px\">\ucf54\uc77c \ub2e8\uc790 \ud45c\uc2dc \ub300 \uc804\uc6d0 \ud45c\uc2dc<\/li>\n<li style=\"margin:0 0 8px\">\ub370\uc774\ud130\uc2dc\ud2b8 \ub610\ub294 \uc81c\ud488 \ub3c4\uba74\uc5d0 \uc788\ub294 \ubaa8\ub378 \ubb38\uc758 \uc591\uc2dd<\/li>\n<\/ol>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"which-sayoon-product-fits-an-no-or-nc-contactor-drawing\">NO \ub610\ub294 NC \ucee8\ud0dd\ud130 \ub3c4\uba74\uc5d0 \ub9de\ub294 SAYOON \uc81c\ud488\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uadf8\ub824\uc9c4 \uc811\uc810 \ud615\uc0c1\uc744 \ub3d9\uc77c\ud55c \ud615\uc0c1\uc744 \ubc1c\ud589\ud558\ub294 \ubaa8\ub378\uacfc \ub9e4\uce6d\ud558\uc138\uc694. 1\uac1c\uc758 a\uc811\uc810(1 NO) \ud68c\ub85c\uc778 \uacbd\uc6b0 CZW50A, \ub3c4\uba74\uc5d0 1\uac1c\uc758 b\uc811\uc810(1 NC) \ud68c\ub85c\uac00 \ud544\uc694\ud55c \uacbd\uc6b0 SZJB300A-D\ub97c \uc120\ud0dd\ud569\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc704\uc758 \ubb38\ud574\ub825 \uac80\uc0ac \ud6c4 \ud6c4\ubcf4\uc790\uc758 \uc81c\ud488 \ud398\uc774\uc9c0\ub97c \uc5f4\uace0 \ubb38\uc758 \uc591\uc2dd \ud589\uc744 \ud655\uc778\ud558\uc138\uc694. <a href=\"https:\/\/sayoon-dc.com\/ko\/product\/czw50a-normally-open-dc-contactor\/\">CZW50A \uc0c1\uc2dc\uac1c\ubc29\ud615 DC \uc811\ucd09\uae30<\/a> \uc5f0\ub77d\ucc98 \uc591\uc2dd \ubaa9\ub85d <strong>1 \uc544\ub2c8\uc694<\/strong> \uacf5\uac1c \ud398\uc774\uc9c0\uc5d0 \uc788\uc73c\ubbc0\ub85c, \uc8fc \uacbd\ub85c\uac00 \ud3c9\uc0c1\uc2dc \uc5f4\ub9bc\uc73c\ub85c \uc124\uacc4\ub418\uace0 \ud504\ub85c\uc81d\ud2b8 \uc870\uac74\uc774 \ud574\ub2f9 \ubaa8\ub378\uc758 \uacf5\uac1c\ub41c \ubc94\uc704\uc5d0 \ubd80\ud569\ud560 \ub54c \uc790\uc5f0\uc2a4\ub7ec\uc6b4 \ud6c4\ubcf4\uac00 \ub429\ub2c8\ub2e4.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\ud68c\ub85c\ub3c4\uac00 \uc0c1\uc2dc \ub2eb\ud78c(NC) \uc8fc \uacbd\ub85c\ub97c \uba85\uc2dc\uc801\uc73c\ub85c \ud544\uc694\ub85c \ud558\ub294 \uacbd\uc6b0 \uac80\ud1a0\ud558\uc2ed\uc2dc\uc624. <a href=\"https:\/\/sayoon-dc.com\/ko\/product\/szjb300a-d-normally-closed-dc-contactor\/\">SZJB300A-D \uc0c1\uc2dc \uac1c\ubc29\ud615 \uc9c1\ub958 \uc811\ucd09\uae30<\/a>, \uc5f0\ub77d\ucc98 \uc591\uc2dd\uc744 \ub098\uc5f4\ud558\ub294 <strong>1 NC<\/strong>. \ud604\uc7ac \uc2dc\ub9ac\uc988\uac00 \uc775\uc219\ud574 \ubcf4\uc778\ub2e4\ub294 \uc774\uc720\ub9cc\uc73c\ub85c NO \ub3c4\uba74\uc744 NC \uad6c\ub9e4\ub85c\u2014\ub610\ub294 \uadf8 \ubc18\ub300\ub85c\u2014\uc804\ud658\ud558\uc9c0 \ub9c8\uc2ed\uc2dc\uc624.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/sayoon-dc.com\/wp-content\/uploads\/2026\/08\/product-czw50a-recommend-symbol.webp\" alt=\"SAYOON CZW50A \uc0c1\uc2dc\uac1c\ubc29\ud615 DC \uc811\ucd09\uae30 \uc81c\ud488 \uc0ac\uc9c4\"><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">\ub354 \ub113\uc740 \ubc94\uc704 \ud0d0\uc0c9\ud558\uae30 <a href=\"https:\/\/sayoon-dc.com\/ko\/%ec%a0%9c%ed%92%88\/\">DC \uc811\ucd09\uae30 \uc81c\ud488<\/a> \ub3c4\uba74\uc758 NO\/NC \ubc0f \ucf54\uc77c \uc8fc\uc11d\uc774 \ud655\uc815\ub41c \ud6c4\uc5d0\ub9cc \uc9c4\ud589\ud558\uc2ed\uc2dc\uc624. \uc2ec\ubc8c \uc77d\uae30\ub294 \ud615\ud0dc\ub97c \uc881\ud600\uc8fc\uace0, \ub370\uc774\ud130\uc2dc\ud2b8\ub294 \uc804\uc555, \uc804\ub958 \ubc0f \ucf54\uc77c \uc120\ud0dd\uc744 \ub9c8\ubb34\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"faq\">\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<h3 style=\"margin:28px 0 12px\">DC \uc811\ucd09\uae30 \uae30\ud638<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc774\uac83\uc740 \uc9c1\ub958 \uc811\ucd09\uae30\uc758 \ucf54\uc77c\uacfc \uc811\uc810\uc5d0 \ub300\ud55c \ud68c\ub85c\ub3c4 \ubd80\ud638\ud654 \ubc29\uc2dd\uc785\ub2c8\ub2e4. \uba3c\uc800 \ucf54\uc77c\uc758 \uc2dd\ubcc4 \uae30\ud638\ub97c \uc77d\uace0, \uadf8 \ub2e4\uc74c \ud574\ub2f9 \ud0dc\uadf8\ub97c \uacf5\uc720\ud558\ub294 \uc811\uc810\ub4e4\uc744 \uc77d\uc2b5\ub2c8\ub2e4.<\/p>\n<h3 style=\"margin:28px 0 12px\">\uc811\ucd09\uae30(contactor) \ub3c4\uba74\uc5d0\uc11c NO(Normal Open, \ud3c9\uc0c1\uc2dc \uc5f4\ub9bc)\uc640 NC(Normal Close, \ud3c9\uc0c1\uc2dc \ub2eb\ud798)\ub97c \uad6c\ubcc4\ud558\ub294 \ubc29\ubc95\uc740 \uae30\ud638\uc640 \ubc88\ud638 \uccb4\uacc4\ub97c \ud655\uc778\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.\n\n1. \uc811\uc810 \uae30\ud638 (Graphical Symbols)\n- NO (Normally Open): \ud68c\ub85c\uac00 \ub5a8\uc5b4\uc838 \uc788\ub294(\ub04a\uc5b4\uc9c4) \ubaa8\uc591\uc73c\ub85c \uadf8\ub824\uc9d1\ub2c8\ub2e4. \ub450 \uac1c\uc758 \uc811\uc810 \uc120\uc774 \uc11c\ub85c \ub2ff\uc9c0 \uc54a\uace0 \ub5a8\uc5b4\uc838 \uc788\uc2b5\ub2c8\ub2e4.\n- NC (Normally Closed): \ud68c\ub85c\uac00 \ubd99\uc5b4 \uc788\ub294 \ubaa8\uc591\uc73c\ub85c \uadf8\ub824\uc9d1\ub2c8\ub2e4. \ub450 \uac1c\uc758 \uc811\uc810 \uc120\uc774 \uc11c\ub85c \uc5f0\uacb0\ub418\uc5b4(\ub2eb\ud600) \uc788\uc2b5\ub2c8\ub2e4.\n\n2. \ub2e8\uc790 \ubc88\ud638 (Terminal Numbering)\nIEC(\uad6d\uc81c\uc804\uae30\ud45c\uc900\ud68c\uc758) \ud45c\uc900 \uae30\uc900:\n- NO \uc811\uc810: \ub05d\uc790\ub9ac\uac00 **3\ubc88\uacfc 4\ubc88**\uc73c\ub85c \ub05d\ub0a9\ub2c8\ub2e4 (\uc608: 13-14, 23-24).\n- NC \uc811\uc810: \ub05d\uc790\ub9ac\uac00 **1\ubc88\uacfc 2\ubc88**\uc73c\ub85c \ub05d\ub0a9\ub2c8\ub2e4 (\uc608: 11-12, 21-22).\n(\uc55e\uc758 \uc22b\uc790\ub294 \uc811\uc810\uc758 \uadf8\ub8f9\uc774\ub098 \uc21c\uc11c\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.)<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\ub3c4\uba74\uc758 \uc815\uc9c0 \uc0c1\ud0dc\ub97c \uc124\uc815\ud55c \ub2e4\uc74c \uc811\uc810 \uadf8\ub798\ud53d\uc744 \uc77d\uc73c\uc2ed\uc2dc\uc624. NO\ub294 \uc815\uc9c0 \uc0c1\ud0dc\uc5d0\uc11c \uc5f4\ub824 \uc788\uace0, NC\ub294 \uc815\uc9c0 \uc0c1\ud0dc\uc5d0\uc11c \ub2eb\ud600 \uc788\uc2b5\ub2c8\ub2e4. \uae30\uacc4\uc758 \uc77c\ubc18\uc801\uc778 \uc791\ub3d9 \uc0c1\ud0dc\uc5d0\uc11c \u201c\uc815\uc0c1(normal)\u201d\uc744 \uc720\ucd94\ud558\uc9c0 \ub9c8\uc2ed\uc2dc\uc624.<\/p>\n<h3 style=\"margin:28px 0 12px\">IEC\uc640 ANSI \ub3c4\uba74\uc5d0\uc11c \uc811\ucd09\uae30 \ucf54\uc77c \uae30\ud638\uac00 \ub2e4\ub974\uac8c \ubcf4\uc774\ub294 \uc774\uc720\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc81c\ub3c4 \uad00\ud589\uc740 \ub2e4\uc591\ud569\ub2c8\ub2e4. \ub9ce\uc740 <strong>IEC \uc811\ucd09\uae30 \uae30\ud638<\/strong> \ub77c\uc774\ube0c\ub7ec\ub9ac\ub294 \uc0ac\uac01\ud615 \ucf54\uc77c\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc18\uba74, \ub9ce\uc740 ANSI\/IEEE \uc2a4\ud0c0\uc77c \uc81c\uc5b4 \ub3c4\uba74\uc740 \uc6d0\ud615 \ucf54\uc77c\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \ud504\ub85c\uc81d\ud2b8 \ubc94\ub840\ub97c \ud655\uc778\ud558\uc138\uc694.<\/p>\n<h3 style=\"margin:28px 0 12px\">\uc811\ucd09\uae30(contactor)\uc5d0\uc11c A1\uacfc A2\ub294 \ucf54\uc77c \ub2e8\uc790(coil terminals)\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc774 \ub2e8\uc790\ub4e4\uc740 \ub0b4\ubd80\uc758 \uc804\uc790\uc11d \ucf54\uc77c\uc5d0 \uc804\uc6d0\uc744 \uacf5\uae09\ud558\uc5ec \uc811\ucd09\uae30\ub97c \uc791\ub3d9(ON) \ub610\ub294 \ube44\uc791\ub3d9(OFF) \uc0c1\ud0dc\ub85c \ub9cc\ub4dc\ub294 \uc81c\uc5b4 \ud68c\ub85c(\uc870\uc791 \ud68c\ub85c)\uc5d0 \uc5f0\uacb0\ub429\ub2c8\ub2e4. \n\n\uc77c\ubc18\uc801\uc73c\ub85c A1\uc5d0\ub294 \uc804\uc6d0(\uc81c\uc5b4 \uc804\uc555\uc758 \ud50c\ub7ec\uc2a4(+) \ub610\ub294 \uc0c1\uc804\uc120(Line))\uc744 \uc5f0\uacb0\ud558\uace0, A2\uc5d0\ub294 \ub9c8\uc774\ub108\uc2a4(-) \ub610\ub294 \uc911\uc131\uc120(Neutral)\uc744 \uc5f0\uacb0\ud569\ub2c8\ub2e4. \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uc81c\uc5b4 \uc804\uc555(\uc608: AC 220V, DC 24V \ub4f1)\uc740 \uc811\ucd09\uae30 \uc81c\ud488\uc5d0 \ub530\ub77c \ub2e4\ub974\ubbc0\ub85c \ubc18\ub4dc\uc2dc \uc0ac\uc591\uc744 \ud655\uc778\ud574\uc57c \ud569\ub2c8\ub2e4.<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uadf8\uac83\ub4e4\uc740 \ub9ce\uc740 \uae30\uae30\uc5d0\uc11c \uacf5\ud1b5 \ucf54\uc77c \ub2e8\uc790 \ud45c\uc2dc\uc785\ub2c8\ub2e4. \uadf8\uac83\ub4e4\uc740 \uc8fc \uc804\uc6d0\uadf9\uc774 \uc544\ub2c8\ub77c \ucf54\uc77c\uc5d0 \uc804\ub825\uc744 \uacf5\uae09\ud558\ub294 \uc81c\uc5b4 \ud68c\ub85c\uc5d0 \uc18d\ud569\ub2c8\ub2e4.<\/p>\n<h3 style=\"margin:28px 0 12px\">\uc8fc \uc811\uc810\uacfc \ubcf4\uc870 \uc811\uc810\uc740 \uc11c\ub85c \ub2e4\ub978 \uae30\ud638\ub97c \uc0ac\uc6a9\ud569\ub2c8\uae4c?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uadf8\uac83\ub4e4\uc740 \uc885\uc885 NO\/NC \ud615\uc0c1\uc744 \uacf5\uc720\ud569\ub2c8\ub2e4. \ubb34\uac8c, \ub2e8\uc790, \uadf8\ub9ac\uace0 \ud68c\ub85c \ubb38\ub9e5\uc740 \uc811\uc810\uc774 \ub3d9\uc77c\ud55c \ucf54\uc77c \ud0dc\uadf8\uc758 \uc804\ub825 \ud3f4\uc778\uc9c0 \ubcf4\uc870 \uacbd\ub85c\uc778\uc9c0\ub97c \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/p>\n<h3 style=\"margin:28px 0 12px\">\uc811\uc18d\uae30 \ud68c\ub85c\ub3c4 \uae30\ud638\ub9cc \ubcf4\uace0 \ubc30\uc120\ud560 \uc218 \uc788\uc2b5\ub2c8\uae4c?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc544\ub2c8\uc624. \uae30\ub2a5\uc5d0 \ub300\ud55c \ud68c\ub85c\ub3c4\ub97c \uc0ac\uc6a9\ud55c \ub2e4\uc74c, \uc120\ud0dd\ud55c \uc81c\ud488 \uc124\uba85\uc11c\uc5d0\uc11c \ub2e8\uc790, \uc815\uaca9, \uc811\uc810 \uad6c\uc131\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n<h3 style=\"margin:28px 0 12px\">\uae30\uacc4\uc801 \uc5f0\ub3d9 \uc811\uc810 \ud45c\uc2dc\ub294 \ubb34\uc5c7\uc744 \uc758\ubbf8\ud569\ub2c8\uae4c?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uc874\uc7ac\ud558\ub294 \uacbd\uc6b0, \uc774\ub294 \uc815\uc758\ub41c \uc870\uac74 \ud558\uc5d0\uc11c \ub3d9\uc2dc\uc5d0 \ub2eb\ud788\uc9c0 \uc54a\uc544\uc57c \ud558\ub294 \ud2b9\ubcc4\ud788 \uc870\uc815\ub41c \uba54\uc774\ud06c\/\ube0c\ub808\uc774\ud06c \uc811\uc810 \uc694\uc18c\ub97c \uc2dd\ubcc4\ud569\ub2c8\ub2e4. \uc774\ub294 \ubaa8\ub4e0 \uc77c\ubc18\uc801\uc778 A\uc811\uc810\/B\uc811\uc810(NO\/NC) \uc30d\uc5d0 \uc758\ud574 \uc554\uc2dc\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n<h3 style=\"margin:28px 0 12px\">\uc0c1\uc2dc \uac1c\ubc29(NO) \uc811\uc810 \ub3c4\uba74\uc5d0 \ub9de\ub294 SAYOON \ubaa8\ub378\uc740 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\uacf5\uac1c\ub41c 1\uac1c\uc758 A\uc811\uc810(NO) \ud3fc\uc758 \uacbd\uc6b0, CZW50A\ub85c \uc2dc\uc791\ud558\uc5ec \ud574\ub2f9 \ubaa8\ub378 \ud398\uc774\uc9c0\uc5d0\uc11c \ucf54\uc77c \uc804\uc555\uacfc \ubd80\ud558 \uc870\uac74\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624. \ub3c4\uba74\uc5d0 \uc2e4\uc81c\ub85c \uc0c1\uc2dc \ub2eb\ud78c(NC) \uc8fc \uacbd\ub85c\uac00 \ud544\uc694\ud55c \uacbd\uc6b0\uc5d0\ub9cc SZJB300A-D\uc640 \uac19\uc740 B\uc811\uc810(NC) \ubaa8\ub378\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"references\">\ucc38\uace0\ubb38\ud5cc<\/h2>\n<ol style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/industrialmonitordirect.com\/blogs\/knowledgebase\/electrical-schematic-symbols-complete-ansiieee-reference\" rel=\"nofollow noopener\" target=\"_blank\">\uc804\uae30 \ud68c\ub85c\ub3c4 \uc2ec\ubcfc \ucc38\uace0 \uc790\ub8cc | IEEE C37.2 \ubc0f IEC<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/viox.com\/electrical-symbols-chart\/\" rel=\"nofollow noopener\" target=\"_blank\">ANSI \ub300 IEC \uc804\uae30 \uae30\ud638 \ucc28\ud2b8<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/contactors-used-in-safety-applications\/auxiliary-contactors\/\" rel=\"nofollow noopener\" target=\"_blank\">\ubcf4\uc870 \uc811\ucd09\uae30 \u2014 \uae30\uacc4\uc801\uc73c\ub85c \uc5f0\ub3d9\ub41c \uc811\uc810 \ud45c\uc2dc<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/automationtop.com\/electrical-symbols-how-to-read-electrical-schematics-3-contactors\/\" rel=\"nofollow noopener\" target=\"_blank\">\uc804\uae30 \uae30\ud638 \u2014 \uc804\uae30 \ud68c\ub85c\ub3c4\ub97c \uc77d\ub294 \ubc29\ubc95? #3 \uc811\ucd09\uae30<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.garagejournal.com\/forum\/threads\/help-interpreting-wiring-schematic-for-contactor.455977\/\" rel=\"nofollow noopener\" target=\"_blank\">\uc811\ucd09\uae30 \ubc30\uc120\ub3c4 \ud574\uc11d \ub3c4\uc6c0 (\uac1c\ub77c\uc9c0 \uc800\ub110)<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.eevblog.com\/forum\/beginners\/standardized-power-symbols\/\" rel=\"nofollow noopener\" target=\"_blank\">\ud45c\uc900\ud654\ub41c \uc804\uc6d0 \uae30\ud638\ub4e4? (EEVblog \ud3ec\ub7fc)<\/a><\/li>\n<\/ol>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\ud68c\ub85c\ub3c4\uc5d0\uc11c DC \uc811\ucd09\uae30 \uae30\ud638 \uc77d\ub294 \ubc95 \ubc30\uc6b0\uae30: \ucf54\uc77c \ub300 \uc811\uc810, NO\/NC \uc548\uc815 \uc0c1\ud0dc, IEC \ub300 ANSI \uc2a4\ud0c0\uc77c, \uadf8\ub9ac\uace0 \uc81c\ud488 \ub9e4\uce6d \uc804 \uc810\uac80 \uc0ac\ud56d.<\/p>","protected":false},"author":3,"featured_media":2867,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2884","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":7}},"_links":{"self":[{"href":"https:\/\/sayoon-dc.com\/ko\/wp-json\/wp\/v2\/posts\/2884","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sayoon-dc.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sayoon-dc.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sayoon-dc.com\/ko\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/sayoon-dc.com\/ko\/wp-json\/wp\/v2\/comments?post=2884"}],"version-history":[{"count":0,"href":"https:\/\/sayoon-dc.com\/ko\/wp-json\/wp\/v2\/posts\/2884\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sayoon-dc.com\/ko\/wp-json\/wp\/v2\/media\/2867"}],"wp:attachment":[{"href":"https:\/\/sayoon-dc.com\/ko\/wp-json\/wp\/v2\/media?parent=2884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sayoon-dc.com\/ko\/wp-json\/wp\/v2\/categories?post=2884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sayoon-dc.com\/ko\/wp-json\/wp\/v2\/tags?post=2884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}