{"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":"ky-hieu-khoi-dong-tu-mot-chieu","status":"publish","type":"post","link":"https:\/\/sayoon-dc.com\/vi\/blog\/dc-contactor-symbol\/","title":{"rendered":"K\u1ef9 s\u01b0 n\u00ean \u0111\u1ecdc k\u00fd hi\u1ec7u Contactor DC tr\u00ean s\u01a1 \u0111\u1ed3 m\u1ea1ch nh\u01b0 th\u1ebf n\u00e0o?"},"content":{"rendered":"<div class=\"b2b-article\">\n<p style=\"margin:0 0 16px;line-height:1.7\">K\u1ef9 s\u01b0 n\u00ean \u0111\u1ecdc m\u1ed9t <strong>k\u00fd hi\u1ec7u kh\u1edfi \u0111\u1ed9ng t\u1eeb m\u1ed9t chi\u1ec1u<\/strong> nh\u01b0 m\u1ed9t cu\u1ed9n d\u00e2y c\u00f9ng v\u1edbi c\u00e1c ti\u1ebfp \u0111i\u1ec3m m\u00e0 cu\u1ed9n d\u00e2y \u0111\u00f3 v\u1eadn h\u00e0nh, \u0111\u01b0\u1ee3c v\u1ebd \u1edf tr\u1ea1ng th\u00e1i ngh\u1ec9 x\u00e1c \u0111\u1ecbnh\u2014ch\u1ee9 kh\u00f4ng ph\u1ea3i d\u01b0\u1edbi d\u1ea1ng m\u1ed9t s\u01a1 \u0111\u1ed3 \u0111i d\u00e2y m\u1ed9t d\u00f2ng. B\u00e0i vi\u1ebft n\u00e0y cho th\u1ea5y h\u00ecnh d\u1ea1ng cu\u1ed9n d\u00e2y kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o theo quy \u01b0\u1edbc v\u1ebd, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a tr\u1ea1ng th\u00e1i ngh\u1ec9 NO v\u00e0 NC kh\u00e1c nhau ra sao tr\u00ean trang gi\u1ea5y, v\u00e0 c\u00e1ch x\u00e1c minh m\u1ed9t b\u1ea3n v\u1ebd tr\u01b0\u1edbc khi kh\u1edbp v\u1edbi m\u1ed9t d\u1ea1ng ti\u1ebfp \u0111i\u1ec3m SAYOON.<\/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\">M\u1ee5c l\u1ee5c<\/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\">K\u00fd hi\u1ec7u C\u00f4ng t\u1eafc t\u01a1 DC th\u1ef1c ch\u1ea5t bi\u1ec3u th\u1ecb \u0111i\u1ec1u g\u00ec?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#how-do-coil-symbols-differ-on-iec-and-ansi-style-drawings\">K\u00fd hi\u1ec7u cu\u1ed9n d\u00e2y kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o tr\u00ean b\u1ea3n v\u1ebd ki\u1ec3u IEC v\u00e0 ANSI?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#how-should-you-read-no-and-nc-contact-symbols\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecdc c\u00e1c k\u00fd hi\u1ec7u ti\u1ebfp \u0111i\u1ec3m NO v\u00e0 NC?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#how-do-main-contacts-differ-from-auxiliary-contacts-on-the-drawing\">Main Contacts v\u00e0 Auxiliary Contacts kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o tr\u00ean b\u1ea3n v\u1ebd?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#how-do-engineers-verify-a-contactor-symbol-before-wiring-or-buying\">K\u1ef9 s\u01b0 x\u00e1c minh k\u00fd hi\u1ec7u c\u00f4ng t\u1eafc t\u01a1 (contactor) tr\u01b0\u1edbc khi \u0111\u1ea5u d\u00e2y ho\u1eb7c mua b\u1eb1ng c\u00e1ch n\u00e0o?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#which-sayoon-product-fits-an-no-or-nc-contactor-drawing\">S\u1ea3n ph\u1ea9m SAYOON n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi b\u1ea3n v\u1ebd kh\u1edfi \u0111\u1ed9ng t\u1eeb NO ho\u1eb7c NC?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#faq\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/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=\"K\u1ef9 s\u01b0 \u0111ang \u0111\u1ecdc k\u00fd hi\u1ec7u contactor DC tr\u00ean s\u01a1 \u0111\u1ed3 m\u1ea1ch b\u00ean c\u1ea1nh m\u1ed9t contactor DC th\u1ef1c t\u1ebf\"><\/figure>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"what-does-a-dc-contactor-symbol-actually-represent\">K\u00fd hi\u1ec7u C\u00f4ng t\u1eafc t\u01a1 DC th\u1ef1c ch\u1ea5t bi\u1ec3u th\u1ecb \u0111i\u1ec1u g\u00ec?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">K\u00fd hi\u1ec7u c\u1ee7a c\u00f4ng t\u1eafc t\u01a1 DC bi\u1ec3u th\u1ecb m\u1ed9t cu\u1ed9n d\u00e2y v\u00e0 c\u00e1c ti\u1ebfp \u0111i\u1ec3m do cu\u1ed9n d\u00e2y \u0111\u00f3 t\u00e1c \u0111\u1ed9ng, ngay c\u1ea3 khi c\u00e1c b\u1ed9 ph\u1eadn n\u00e0y n\u1eb1m tr\u00ean c\u00e1c b\u1ea3n v\u1ebd kh\u00e1c nhau.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, cu\u1ed9n d\u00e2y l\u00e0 \u201cnam ch\u00e2m\u201d \u0111i\u1ec1u khi\u1ec3n, v\u00e0 c\u00e1c k\u00fd hi\u1ec7u ti\u1ebfp \u0111i\u1ec3m l\u00e0 c\u00e1c c\u00f4ng t\u1eafc m\u00e0 n\u00f3 \u0111\u00f3ng ho\u1eb7c m\u1edf. C\u00e1c b\u00e0i h\u1ecdc s\u01a1 \u0111\u1ed3 gi\u00e1o d\u1ee5c m\u00f4 t\u1ea3 r\u00f5 r\u00e0ng c\u1ea5u tr\u00fac ba ph\u1ea7n \u0111\u00f3: cu\u1ed9n d\u00e2y, ti\u1ebfp \u0111i\u1ec3m ch\u00ednh v\u00e0 ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c v\u1ebd t\u00e1ch r\u1eddi kh\u1ecfi th\u00e2n cu\u1ed9n d\u00e2y.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">K\u00fd hi\u1ec7u tham chi\u1ebfu n\u1eb1m tr\u00ean cu\u1ed9n d\u00e2y. C\u00e1c ti\u1ebfp \u0111i\u1ec3m \u1edf nh\u1eefng v\u1ecb tr\u00ed kh\u00e1c s\u1ebd k\u1ebf th\u1eeba c\u00f9ng th\u1ebb \u0111\u00f3 \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i l\u1ea1i c\u00e2u chuy\u1ec7n qua c\u00e1c b\u1eadc thang ho\u1eb7c trang gi\u1ea5y. \u0110\u1ed3 h\u1ecda n\u00e9t \u0111\u1ee9t \u0111\u00f4i khi g\u1ee3i \u00fd r\u1eb1ng c\u00e1c ti\u1ebfp \u0111i\u1ec3m \u0111\u01b0\u1ee3c li\u00ean k\u1ebft c\u01a1 h\u1ecdc v\u1edbi cu\u1ed9n d\u00e2y, nh\u01b0ng ch\u00ednh th\u1ebb \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i kho\u1ea3ng c\u00e1ch tr\u00ean trang \u2014 m\u1edbi l\u00e0 li\u00ean k\u1ebft \u0111\u00e1ng tin c\u1eady.<\/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=\"Cu\u1ed9n d\u00e2y kh\u1edfi \u0111\u1ed9ng t\u1eeb DC v\u00e0 c\u00e1c k\u00fd hi\u1ec7u ti\u1ebfp \u0111i\u1ec3m \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u00ean c\u1ea1nh thi\u1ebft b\u1ecb v\u1eadt l\u00fd\"><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">Khi m\u1ed9t OEM xem x\u00e9t b\u1ea3n v\u1ebd t\u1ee7 \u0111i\u1ec7n c\u1ee7a xe n\u00e2ng d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) ho\u1eb7c b\u1ed9 l\u01b0u \u0111i\u1ec7n (UPS), c\u00f4ng vi\u1ec7c \u0111\u1ea7u ti\u00ean l\u00e0 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ee7a m\u1ecdi tr\u01b0\u1eddng h\u1ee3p c\u00f3 nh\u00e3n \u0111\u00f3 tr\u01b0\u1edbc khi b\u00e0n lu\u1eadn v\u1ec1 m\u00e0u s\u1eafc d\u00e2y \u0111i\u1ec7n ho\u1eb7c \u1ed1c v\u00edt c\u1ea7u \u0111\u1ea5u.<\/p>\n<div class=\"b2b-table-scroll\" role=\"region\" aria-label=\"B\u1ea3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 cu\u1ed9n\" 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\">Ph\u1ea7n t\u1eed bi\u1ec3u t\u01b0\u1ee3ng<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">N\u00f3 n\u00f3i cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u g\u00ec<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\u0110i\u1ec1u m\u00e0 n\u00f3 kh\u00f4ng n\u00f3i cho b\u1ea1n bi\u1ebft<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110\u1ed3 h\u1ecda cu\u1ed9n + th\u1ebb<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Thi\u1ebft b\u1ecb n\u00e0o \u0111ang \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng \u0111\u1ecbnh m\u1ee9c<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110\u1ed3 h\u1ecda li\u00ean h\u1ec7<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i \u1edf tr\u1ea1ng th\u00e1i ngh\u1ec9 \/ \u0111\u00e3 t\u00e1c \u0111\u1ed9ng<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">K\u00edch th\u01b0\u1edbc c\u00e1p ho\u1eb7c k\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u1ea5u k\u1ebft th\u00fac (khi hi\u1ec3n th\u1ecb)<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00e1c \u0111i\u1ec3m k\u1ebft n\u1ed1i c\u00f3 th\u1ec3<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">B\u1eb1ng ch\u1ee9ng cho th\u1ea5y m\u00f4 h\u00ecnh \u0111\u00e3 c\u00e0i \u0111\u1eb7t tr\u00f9ng kh\u1edbp<\/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\">K\u00fd hi\u1ec7u cu\u1ed9n d\u00e2y kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o tr\u00ean b\u1ea3n v\u1ebd ki\u1ec3u IEC v\u00e0 ANSI?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">H\u00ecnh d\u1ea1ng cu\u1ed9n d\u00e2y tu\u00e2n theo quy \u01b0\u1edbc b\u1ea3n v\u1ebd: nhi\u1ec1u b\u1ea3n v\u1ebd ki\u1ec3u IEC s\u1eed d\u1ee5ng h\u00ecnh ch\u1eef nh\u1eadt, trong khi nhi\u1ec1u b\u1ea3n v\u1ebd \u0111i\u1ec1u khi\u1ec3n B\u1eafc M\u1ef9 s\u1eed d\u1ee5ng m\u1ed9t h\u00ecnh tr\u00f2n c\u00f3 nh\u00e3n.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">S\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00f3 l\u00e0 l\u1ef1a ch\u1ecdn v\u1ec1 ng\u00f4n ng\u1eef, kh\u00f4ng ph\u1ea3i b\u1ea3n ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a s\u1ea3n ph\u1ea9m. C\u00e1c t\u00e0i li\u1ec7u tham kh\u1ea3o xuy\u00ean ti\u00eau chu\u1ea9n v\u1eabn hi\u1ec3n th\u1ecb cu\u1ed9n d\u00e2y kh\u1edfi \u0111\u1ed9ng t\u1eeb d\u01b0\u1edbi d\u1ea1ng c\u00e1c k\u00fd hi\u1ec7u c\u01a1 c\u1ea5u ch\u1ea5p h\u00e0nh d\u1ec5 nh\u1eadn bi\u1ebft v\u1edbi c\u00e1c ch\u00fa th\u00edch v\u1ec1 thi\u1ebft b\u1ecb ho\u1eb7c \u0111\u1ea7u n\u1ed1i \u1edf g\u1ea7n \u0111\u00f3. C\u00e1c th\u01b0 vi\u1ec7n ki\u1ec3u IEC 60617 v\u00e0 th\u01b0 vi\u1ec7n ki\u1ec3u ANSI\/IEEE \u0111\u1ec1u c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 c\u00f9ng m\u1ed9t ch\u1ee9c n\u0103ng kh\u1edfi \u0111\u1ed9ng t\u1eeb v\u1edbi c\u00e1c \u0111\u01b0\u1eddng n\u00e9t ph\u00e1c th\u1ea3o kh\u00e1c nhau.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u1ed9t \u0111i\u1ec3m l\u01b0u \u00fd th\u1ee9 hai v\u1ec1 m\u1eb7t thu\u1eadt ng\u1eef \u0111\u1ed1i v\u1edbi c\u00e1c t\u1ee7 \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC): m\u1ed9t s\u1ed1 b\u1ea3n v\u1ebd chuy\u00ean v\u1ec1 b\u1ea3o v\u1ec7 \u1edf B\u1eafc M\u1ef9 s\u1eed d\u1ee5ng c\u00e1c s\u1ed1 hi\u1ec7u ch\u1ee9c n\u0103ng thi\u1ebft b\u1ecb, trong \u0111\u00f3 c\u00e1c thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft xoay chi\u1ec1u (AC) v\u00e0 thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft m\u1ed9t chi\u1ec1u (DC) c\u00f3 th\u1ec3 mang c\u00e1c s\u1ed1 hi\u1ec7u kh\u00e1c nhau trong h\u1ec7 th\u1ed1ng \u0111\u00e1nh s\u1ed1 \u0111\u00f3. H\u00e3y coi c\u00e1c s\u1ed1 hi\u1ec7u \u0111\u00f3 l\u00e0 thu\u1eadt ng\u1eef trong b\u1ea3n v\u1ebd, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 m\u00e3 catalog c\u1ee7a SAYOON.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">N\u1ebfu b\u1ea3n v\u1ebd c\u1ee7a nh\u00e0 cung c\u1ea5p tr\u00f4ng c\u00f3 v\u1ebb \u201csai\u201d v\u00ec cu\u1ed9n d\u00e2y c\u00f3 h\u00ecnh tr\u00f2n thay v\u00ec h\u00ecnh ch\u1eef nh\u1eadt, h\u00e3y ki\u1ec3m tra khung t\u00ean v\u00e0 ch\u00fa th\u00edch tr\u01b0\u1edbc khi vi\u1ebft l\u1ea1i \u0111\u1ecbnh m\u1ee9c v\u1eadt li\u1ec7u. C\u00e1c d\u1ef1 \u00e1n xu\u1ea5t kh\u1ea9u h\u1ed7n h\u1ee3p th\u01b0\u1eddng \u0111i k\u00e8m v\u1edbi c\u1ea3 hai quy \u01b0\u1edbc trong c\u00f9ng m\u1ed9t b\u1ed9 t\u00e0i li\u1ec7u.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">T\u00edn hi\u1ec7u \u0111\u1ecdc ph\u1ee5 l\u00e0 <strong>k\u00fd hi\u1ec7u cu\u1ed9n d\u00e2y contactor<\/strong> ghi ch\u00fa \u0111i\u1ec7n \u00e1p cu\u1ed9n d\u00e2y, d\u1ea5u A1\/A2, ho\u1eb7c m\u1ed9t m\u00f4 t\u1ea3 ng\u1eafn b\u00ean d\u01b0\u1edbi nh\u00e3n. C\u00e1c ghi ch\u00fa \u0111\u00f3 li\u00ean k\u1ebft ngu\u1ed3n \u0111i\u1ec1u khi\u1ec3n v\u1edbi c\u01a1 c\u1ea5u truy\u1ec1n \u0111\u1ed9ng m\u00e0 c\u00e1c ti\u1ebfp \u0111i\u1ec3m \u0111i theo.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"how-should-you-read-no-and-nc-contact-symbols\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecdc c\u00e1c k\u00fd hi\u1ec7u ti\u1ebfp \u0111i\u1ec3m NO v\u00e0 NC?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">NO c\u00f3 ngh\u0129a l\u00e0 m\u1edf \u1edf tr\u1ea1ng th\u00e1i ngh\u1ec9 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh c\u1ee7a b\u1ea3n v\u1ebd; NC c\u00f3 ngh\u0129a l\u00e0 \u0111\u00f3ng \u1edf ch\u00ednh tr\u1ea1ng th\u00e1i ngh\u1ec9 \u0111\u00f3\u2014th\u01b0\u1eddng l\u00e0 khi cu\u1ed9n d\u00e2y kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Theo chuy\u00ean m\u00f4n, \u201cth\u01b0\u1eddng tr\u1ef1c\u201d (normally) \u0111\u1ec1 c\u1eadp \u0111\u1ebfn tr\u1ea1ng th\u00e1i c\u01a1 h\u1ecdc kh\u00f4ng c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u01b0\u1ee3c ghi tr\u00ean s\u01a1 \u0111\u1ed3, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 nh\u1eefng g\u00ec c\u1ed7 m\u00e1y l\u00e0m ph\u1ea7n l\u1edbn th\u1eddi gian trong ng\u00e0y. N\u00f3i m\u1ed9t c\u00e1ch d\u1ec5 hi\u1ec3u: m\u1ed9t ti\u1ebfp \u0111i\u1ec3m th\u01b0\u1eddng m\u1edf s\u1ebd \u1edf tr\u1ea1ng th\u00e1i m\u1edf cho \u0111\u1ebfn khi cu\u1ed9n d\u00e2y \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n; m\u1ed9t ti\u1ebfp \u0111i\u1ec3m th\u01b0\u1eddng \u0111\u00f3ng s\u1ebd \u1edf tr\u1ea1ng th\u00e1i \u0111\u00f3ng cho \u0111\u1ebfn khi cu\u1ed9n d\u00e2y \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u00e1nh s\u1ed1 ph\u1ee5 tr\u1ee3 ki\u1ec3u IEC ph\u1ed5 bi\u1ebfn th\u01b0\u1eddng th\u1ec3 hi\u1ec7n c\u00e1c c\u1eb7p NO nh\u01b0 13\/14 v\u00e0 c\u00e1c c\u1eb7p NC nh\u01b0 21\/22, nh\u01b0ng tr\u1ea1ng th\u00e1i ngh\u1ec9 tr\u00ean s\u01a1 \u0111\u1ed3 v\u1eabn xu\u1ea5t hi\u1ec7n tr\u01b0\u1edbc. H\u00e3y x\u00e1c nh\u1eadn c\u00e1c s\u1ed1 tr\u00ean s\u01a1 \u0111\u1ed3 thi\u1ebft b\u1ecb c\u1ee7a ki\u1ec3u m\u00e1y \u0111ang c\u00f3.<\/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=\"So s\u00e1nh c\u00e1c k\u00fd hi\u1ec7u ti\u1ebfp \u0111i\u1ec3m kh\u1edfi \u0111\u1ed9ng t\u1eeb th\u01b0\u1eddng m\u1edf v\u00e0 th\u01b0\u1eddng \u0111\u00f3ng tr\u00ean b\u1ea3n v\u1ebd\"><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">Sai l\u1ea7m trong mua s\u1eafm b\u1eaft \u0111\u1ea7u khi m\u1ed9t ng\u01b0\u1eddi mua nghe th\u1ea5y \u201cth\u01b0\u1eddng \u0111\u00f3ng\u201d v\u00e0 m\u1eb7c \u0111\u1ecbnh r\u1eb1ng t\u1ea3i ph\u1ea3i \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n b\u1ea5t c\u1ee9 khi n\u00e0o nh\u00e0 m\u00e1y \u0111ang ho\u1ea1t \u0111\u1ed9ng. Tr\u00ean m\u1ed9t b\u1ea3n v\u1ebd ng\u1eaft k\u1ebft n\u1ed1i \u1eafc quy, s\u1ef1 hi\u1ec3u nh\u1ea7m \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0m \u0111\u1ea3o ng\u01b0\u1ee3c h\u00e0nh vi s\u1ef1 c\u1ed1 d\u1ef1 \u0111\u1ecbnh tr\u01b0\u1edbc c\u1ea3 khi c\u00f3 ai m\u1edf m\u1ed9t b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ra xem.<\/p>\n<blockquote>\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>M\u1eb9o:<\/strong> N\u1ebfu b\u1ea3n v\u1ebd th\u1ec3 hi\u1ec7n c\u00e1c ti\u1ebfp \u0111i\u1ec3m li\u00ean k\u1ebft c\u01a1 h\u1ecdc, h\u00e3y t\u00ecm d\u1ea5u hi\u1ec7u \u0111\u01b0\u1eddng \u0111\u00f4i \/ h\u00ecnh tr\u00f2n \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c ph\u1ea7n t\u1eed ti\u1ebfp \u0111i\u1ec3m li\u00ean k\u1ebft c\u01a1 h\u1ecdc. D\u1ea5u hi\u1ec7u \u0111\u00f3 l\u00e0 m\u1ed9t tuy\u00ean b\u1ed1 t\u00e0i li\u1ec7u v\u1ec1 s\u1ef1 ph\u1ed1i h\u1ee3p ti\u1ebfp \u0111i\u1ec3m\u2014ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t trang tr\u00ed chung chung tr\u00ean m\u1ecdi k\u00fd hi\u1ec7u kh\u1edfi \u0111\u1ed9ng t\u1eeb. Ngu\u1ed3n: Th\u1ea3o lu\u1eadn c\u1ee7a GT Engineering v\u1ec1 vi\u1ec7c \u0111\u00e1nh d\u1ea5u ti\u1ebfp \u0111i\u1ec3m li\u00ean k\u1ebft c\u01a1 h\u1ecdc theo ph\u1ee5 l\u1ee5c ti\u00eau chu\u1ea9n ph\u1ee5 tr\u1ee3 kh\u1edfi \u0111\u1ed9ng t\u1eeb IEC.<\/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\">Main Contacts v\u00e0 Auxiliary Contacts kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o tr\u00ean b\u1ea3n v\u1ebd?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ti\u1ebfp \u0111i\u1ec3m ch\u00ednh l\u00e0 \u0111\u01b0\u1eddng chuy\u1ec3n m\u1ea1ch t\u1ea3i; ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 th\u01b0\u1eddng l\u00e0 \u0111\u01b0\u1eddng t\u00edn hi\u1ec7u, t\u1ef1 gi\u1eef ho\u1eb7c li\u00ean kh\u00f3a \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi c\u00f9ng m\u1ed9t nh\u00e3n cu\u1ed9n d\u00e2y.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Tr\u00ean nhi\u1ec1u b\u1ea3n v\u1ebd c\u00f4ng nghi\u1ec7p, c\u00e1c ti\u1ebfp \u0111i\u1ec3m \u0111\u1ed9ng l\u1ef1c \u0111\u01b0\u1ee3c v\u1ebd \u0111\u1eadm h\u01a1n, trong khi c\u00e1c ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 s\u1eed d\u1ee5ng c\u00f9ng h\u00ecnh h\u1ecdc Th\u01b0\u1eddng m\u1edf\/Th\u01b0\u1eddng \u0111\u00f3ng (NO\/NC) v\u1edbi n\u00e9t v\u1ebd m\u1ea3nh h\u01a1n ho\u1eb7c c\u00e1c lo\u1ea1i \u0111\u1ea7u n\u1ed1i kh\u00e1c nhau. Ch\u1ec9 ri\u00eang h\u00ecnh d\u1ea1ng ti\u1ebfp \u0111i\u1ec3m c\u00f3 th\u1ec3 tr\u00f4ng gi\u1ed1ng h\u1ec7t v\u1edbi ti\u1ebfp \u0111i\u1ec3m c\u1ee7a r\u01a1-le \u0111i\u1ec1u khi\u1ec3n; nh\u00e3n v\u00e0 b\u1ed1i c\u1ea3nh m\u1ea1ch \u0111i\u1ec7n s\u1ebd x\u00e1c \u0111\u1ecbnh thi\u1ebft b\u1ecb g\u1ed1c.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Gi\u1eef nguy\u00ean s\u1ef1 ph\u00e2n t\u00e1ch trong t\u00e2m tr\u00ed m\u00e0 c\u00e1c gi\u1ea3ng vi\u00ean v\u1ec1 \u0111\u1ea5u d\u00e2y v\u1eabn th\u01b0\u1eddng nh\u1ea5n m\u1ea1nh: m\u1ea1ch cu\u1ed9n d\u00e2y l\u00e0 m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n, v\u00e0 c\u00e1c c\u1ef1c ch\u00ednh l\u00e0 m\u1ea1ch \u0111\u1ed9ng l\u1ef1c. M\u1ed9t ch\u00fa th\u00edch v\u1ec1 cu\u1ed9n d\u00e2y \u0111i\u1ec7n \u00e1p th\u1ea5p n\u1eb1m c\u1ea1nh \u0111\u01b0\u1eddng d\u1eabn t\u1ea3i d\u00f2ng \u0111i\u1ec7n cao l\u00e0 \u0111i\u1ec1u b\u00ecnh th\u01b0\u1eddng, kh\u00f4ng ph\u1ea3i l\u1ed7i v\u1ebd k\u1ef9 thu\u1eadt.<\/p>\n<div class=\"b2b-table-scroll\" role=\"region\" aria-label=\"B\u1ea3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 cu\u1ed9n\" 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\">D\u1ea5u hi\u1ec7u \u0111\u1ecdc<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">C\u00e1c li\u00ean h\u1ec7 ch\u00ednh<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Ti\u1ebfp \u0111i\u1ec3m ph\u1ee5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00f4ng vi\u1ec7c \u0111i\u1ec3n h\u00ecnh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">K\u1ebft n\u1ed1i ho\u1eb7c ng\u1eaft \u0111\u01b0\u1eddng d\u1eabn t\u1ea3i m\u1ed9t chi\u1ec1u<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ph\u1ea3n h\u1ed3i, duy tr\u00ec, kh\u00f3a li\u00ean \u0111\u1ed9ng, ch\u1ec9 th\u1ecb<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00e1c d\u1ea5u hi\u1ec7u ph\u1ed5 bi\u1ebfn<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00e1c c\u1ed9t n\u1eb7ng h\u01a1n; ghi ch\u00fa ph\u00eda \u0111\u01b0\u1eddng d\u00e2y\/ph\u00eda t\u1ea3i<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ti\u1ebfp \u0111i\u1ec3m NO\/NC nh\u1eb9; c\u00e1c c\u1eb7p nh\u01b0 13\/14 ho\u1eb7c 21\/22<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c n\u1ebfu \u0111\u1ecdc nh\u1ea7m<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Mong \u0111\u1ee3i chuy\u1ec3n \u0111\u1ed5i ngu\u1ed3n sai<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ph\u1ea3n h\u1ed3i PLC sai ho\u1eb7c h\u00e0nh vi t\u1ef1 duy tr\u00ec (seal-in) sai<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ed1i v\u1edbi c\u00f4ng vi\u1ec7c tr\u00ean t\u1ee7 \u0111i\u1ec7n DC, vi\u1ec7c ph\u00e2n chia \u0111\u00f3 c\u0169ng b\u1ea3o v\u1ec7 c\u00e1c cu\u1ed9c th\u1ea3o lu\u1eadn l\u1ef1a ch\u1ecdn: a <strong>contactor th\u01b0\u1eddng m\u1edf<\/strong> Bi\u1ec3u m\u1eabu cho \u0111\u01b0\u1eddng d\u1eabn ch\u00ednh l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh mua h\u00e0ng kh\u00e1c v\u1edbi nhu c\u1ea7u ph\u1ea3n h\u1ed3i ch\u1ec9 d\u00e0nh cho \u0111\u01b0\u1eddng d\u1eabn ph\u1ee5 tr\u00ean c\u00f9ng m\u1ed9t th\u1ebb.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"how-do-engineers-verify-a-contactor-symbol-before-wiring-or-buying\">K\u1ef9 s\u01b0 x\u00e1c minh k\u00fd hi\u1ec7u c\u00f4ng t\u1eafc t\u01a1 (contactor) tr\u01b0\u1edbc khi \u0111\u1ea5u d\u00e2y ho\u1eb7c mua b\u1eb1ng c\u00e1ch n\u00e0o?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">X\u00e1c nh\u1eadn ch\u00fa gi\u1ea3i, tr\u1ea1ng th\u00e1i ngh\u1ec9, nh\u00e3n cu\u1ed9n d\u00e2y v\u00e0 c\u00e1c c\u1ef1c cu\u1ed9n d\u00e2y tr\u01b0\u1edbc khi coi b\u1ea5t k\u1ef3 k\u00fd hi\u1ec7u c\u00f4ng t\u1eafc t\u01a1 n\u00e0o l\u00e0 s\u01a1 \u0111\u1ed3 \u0111i d\u00e2y.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">B\u1eaft \u0111\u1ea7u b\u1eb1ng kh\u1ed1i ti\u00eau \u0111\u1ec1 v\u00e0 b\u1ea3ng ch\u00fa gi\u1ea3i k\u00fd hi\u1ec7u. C\u00e1c ren tr\u00ean di\u1ec5n \u0111\u00e0n v\u00e0 hi\u1ec7n tr\u01b0\u1eddng cho th\u1ea5y m\u1ecdi ng\u01b0\u1eddi nhanh ch\u00f3ng g\u00e1n \u00fd ngh\u0129a nh\u01b0 th\u1ebf n\u00e0o khi c\u00e1c quy \u01b0\u1edbc tr\u00f4i d\u1ea1t gi\u1eefa c\u00e1c c\u00f4ng ty ho\u1eb7c khu v\u1ef1c. B\u1ea3ng ch\u00fa gi\u1ea3i r\u1ebb h\u01a1n vi\u1ec7c l\u00e0m l\u1ea1i.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ti\u1ebfp theo, h\u00e3y thu th\u1eadp m\u1ecdi ti\u1ebfp \u0111i\u1ec3m c\u00f3 c\u00f9ng k\u00fd hi\u1ec7u tham chi\u1ebfu c\u1ee7a cu\u1ed9n d\u00e2y. Kh\u00f4ng \u0111\u01b0\u1ee3c gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng hai cu\u1ed9n d\u00e2y \u1edf g\u1ea7n nhau l\u00e0 c\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb ch\u1ec9 v\u00ec h\u00ecnh d\u1ea1ng gi\u1ed1ng nhau.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Sau \u0111\u00f3, t\u00e1ch A1\/A2 kh\u1ecfi c\u00e1c c\u1ed9t \u0111i\u1ec7n. Trong m\u1ed9t chu\u1ed7i b\u00e0i \u0111\u0103ng chung tr\u00ean Garage Journal, v\u1ea5n \u0111\u1ec1 c\u1ee7a ng\u01b0\u1eddi \u0111\u0103ng g\u1ed1c ch\u00ednh x\u00e1c l\u00e0 \u1edf \u0111\u00f3: \u201cA1 v\u00e0 A2... l\u00e0 th\u1ee9 t\u00f4i \u0111ang c\u1ed1 g\u1eafng t\u00ecm hi\u1ec3u.\u201d C\u00e1c c\u00e2u tr\u1ea3 l\u1eddi \u0111\u00e3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c A1\/A2 l\u00e0 cu\u1ed9n d\u00e2y, \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u01b0\u1eddng d\u00e2y ch\u00ednh\/\u0111\u01b0\u1eddng t\u1ea3i.<\/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=\"K\u1ef9 s\u01b0 \u0111ang ki\u1ec3m tra c\u00e1c \u0111\u1ea7u c\u1ef1c cu\u1ed9n d\u00e2y c\u00f4ng-t\u1eafc-t\u01a1 so v\u1edbi s\u01a1 \u0111\u1ed3 m\u1ea1ch\"><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">K\u1ebft th\u00fac b\u1eb1ng vi\u1ec7c ki\u1ec3m tra t\u00e0i li\u1ec7u s\u1ea3n ph\u1ea9m: s\u01a1 \u0111\u1ed3 nguy\u00ean l\u00fd gi\u1ea3i th\u00edch ch\u1ee9c n\u0103ng; s\u01a1 \u0111\u1ed3 \u0111\u1ea7u cu\u1ed1i v\u00e0 d\u1ea1ng ti\u1ebfp \u0111i\u1ec3m c\u1ee7a m\u1eabu \u0111\u01b0\u1ee3c ch\u1ecdn x\u00e1c nh\u1eadn ph\u1ea7n c\u1ee9ng. Bi\u1ec3u \u0111\u1ed3 k\u00fd hi\u1ec7u t\u1ef1 n\u00f3 kh\u00f4ng th\u1ec3 \u1ee7y quy\u1ec1n cho vi\u1ec7c \u0111\u1ea5u n\u1ed1i d\u00e2y.<\/p>\n<blockquote>\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>T\u1eeb l\u0129nh v\u1ef1c:<\/strong> Khi ng\u01b0\u1eddi \u0111\u1ecdc g\u1eb7p kh\u00f3 kh\u0103n v\u1edbi b\u1ea3n v\u1ebd kh\u1edfi \u0111\u1ed9ng t\u1eeb (contactor), h\u1ecd th\u01b0\u1eddng b\u1ecb v\u01b0\u1edbng \u1edf c\u00e1c c\u1ef1c c\u1ee7a cu\u1ed9n d\u00e2y ho\u1eb7c \u1edf vi\u1ec7c kh\u00f4ng ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng bao xung quanh l\u00e0 \u201cd\u00e2y d\u1eabn\u201d hay ch\u1ec9 l\u00e0 h\u00ecnh d\u00e1ng c\u1ee7a thi\u1ebft b\u1ecb. H\u00e3y x\u00e1c \u0111\u1ecbnh r\u00f5 \u0111\u01b0\u1eddng \u0111i c\u1ee7a cu\u1ed9n d\u00e2y tr\u01b0\u1edbc, sau \u0111\u00f3 \u0111\u1ecdc l\u1ea1i c\u00e1c ti\u1ebfp \u0111i\u1ec3m Th\u01b0\u1eddng m\u1edf\/Th\u01b0\u1eddng \u0111\u00f3ng (NO\/NC) d\u1ef1a tr\u00ean tr\u1ea1ng th\u00e1i ngh\u1ec9 \u0111\u00e3 \u0111\u1ecbnh. Ngu\u1ed3n: Ch\u1ee7 \u0111\u1ec1 s\u01a1 \u0111\u1ed3 kh\u1edfi \u0111\u1ed9ng t\u1eeb tr\u00ean Garage Journal.<\/p>\n<\/blockquote>\n<p style=\"margin:0 0 16px;line-height:1.7\">Th\u1ee9 t\u1ef1 ki\u1ec3m tra th\u1ef1c t\u1ebf:<\/p>\n<ol style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\">Huy\u1ec1n tho\u1ea1i v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng<\/li>\n<li style=\"margin:0 0 8px\">Nh\u00e3n cu\u1ed9n d\u00e2y v\u00e0 tham chi\u1ebfu ch\u00e9o<\/li>\n<li style=\"margin:0 0 8px\">\u0110\u1ed3 h\u1ecda tr\u1ea1ng th\u00e1i ngh\u1ec9 NO\/NC<\/li>\n<li style=\"margin:0 0 8px\">Ng\u1eef c\u1ea3nh ch\u00ednh so v\u1edbi ng\u1eef c\u1ea3nh ph\u1ee5<\/li>\n<li style=\"margin:0 0 8px\">K\u00fd hi\u1ec7u \u0111\u1ea7u cu\u1ed1i cu\u1ed9n d\u00e2y so v\u1edbi k\u00fd hi\u1ec7u ngu\u1ed3n<\/li>\n<li style=\"margin:0 0 8px\">Bi\u1ec3u m\u1eabu li\u00ean h\u1ec7 m\u1eabu tr\u00ean b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ho\u1eb7c b\u1ea3n v\u1ebd s\u1ea3n ph\u1ea9m<\/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\">S\u1ea3n ph\u1ea9m SAYOON n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi b\u1ea3n v\u1ebd kh\u1edfi \u0111\u1ed9ng t\u1eeb NO ho\u1eb7c NC?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Kh\u1edbp m\u1eabu phi\u1ebfu li\u00ean h\u1ec7 \u0111\u00e3 v\u1ebd v\u1edbi m\u1ed9t model ph\u00e1t h\u00e0nh c\u00f9ng m\u1ed9t phi\u1ebfu\u2014CZW50A cho \u0111\u01b0\u1eddng 1 NO, ho\u1eb7c SZJB300A-D khi b\u1ea3n v\u1ebd c\u1ea7n \u0111\u01b0\u1eddng 1 NC.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Sau khi ki\u1ec3m tra n\u0103ng l\u1ef1c \u0111\u1ecdc vi\u1ebft \u1edf tr\u00ean, h\u00e3y m\u1edf trang s\u1ea3n ph\u1ea9m c\u1ee7a \u1ee9ng vi\u00ean v\u00e0 x\u00e1c nh\u1eadn d\u00f2ng bi\u1ec3u m\u1eabu li\u00ean h\u1ec7. <a href=\"https:\/\/sayoon-dc.com\/vi\/product\/czw50a-normally-open-dc-contactor\/\">Contactor DC th\u01b0\u1eddng m\u1edf CZW50A<\/a> danh s\u00e1ch bi\u1ec3u m\u1eabu li\u00ean h\u1ec7 <strong>1 KH\u00d4NG<\/strong> tr\u00ean trang c\u00f4ng ngh\u1ec7 c\u1ee7a m\u00ecnh, do \u0111\u00f3 n\u00f3 l\u00e0 m\u1ed9t \u1ee9ng c\u1eed vi\u00ean t\u1ef1 nhi\u00ean khi \u0111\u01b0\u1eddng d\u1eabn ch\u00ednh \u0111\u01b0\u1ee3c v\u1ebd \u1edf tr\u1ea1ng th\u00e1i th\u01b0\u1eddng m\u1edf v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee7a d\u1ef1 \u00e1n ph\u00f9 h\u1ee3p v\u1edbi ph\u1ea1m vi \u0111\u00e3 c\u00f4ng b\u1ed1 c\u1ee7a m\u00f4 h\u00ecnh \u0111\u00f3.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Khi s\u01a1 \u0111\u1ed3 nguy\u00ean l\u00fd c\u1ea7n r\u00f5 r\u00e0ng m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn ch\u00ednh th\u01b0\u1eddng \u0111\u00f3ng, h\u00e3y xem x\u00e9t l\u1ea1i <a href=\"https:\/\/sayoon-dc.com\/vi\/product\/szjb300a-d-normally-closed-dc-contactor\/\">Contactor DC th\u01b0\u1eddng \u0111\u00f3ng SZJB300A-D<\/a>, trong \u0111\u00f3 li\u1ec7t k\u00ea bi\u1ec3u m\u1eabu li\u00ean h\u1ec7 <strong>1 NC<\/strong>. \u0110\u1eebng chuy\u1ec3n \u0111\u1ed5i b\u1ea3n v\u1ebd NO th\u00e0nh \u0111\u01a1n h\u00e0ng NC\u2014ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i\u2014ch\u1ec9 v\u00ec lo\u1ea1t hi\u1ec7n t\u1ea1i tr\u00f4ng quen thu\u1ed9c.<\/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=\"H\u00ecnh \u1ea3nh s\u1ea3n ph\u1ea9m kh\u1edfi \u0111\u1ed9ng t\u1eeb DC th\u01b0\u1eddng m\u1edf SAYOON CZW50A\"><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">Duy\u1ec7t qua ph\u1ea7n m\u1edf r\u1ed9ng <a href=\"https:\/\/sayoon-dc.com\/vi\/san-pham\/\">S\u1ea3n ph\u1ea9m kh\u1edfi \u0111\u1ed9ng t\u1eeb m\u1ed9t chi\u1ec1u<\/a> ch\u1ec9 t\u1eadp trung sau khi c\u00e1c ghi ch\u00fa NO\/NC v\u00e0 cu\u1ed9n d\u00e2y c\u1ee7a b\u1ea3n v\u1ebd \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ed1t. Vi\u1ec7c \u0111\u1ecdc k\u00fd hi\u1ec7u thu h\u1eb9p h\u00ecnh th\u1ee9c; b\u1ea3ng d\u1eef li\u1ec7u ho\u00e0n thi\u1ec7n vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111i\u1ec7n \u00e1p, d\u00f2ng \u0111i\u1ec7n v\u00e0 cu\u1ed9n d\u00e2y.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"faq\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3 style=\"margin:28px 0 12px\">K\u00fd hi\u1ec7u kh\u1edfi \u0111\u1ed9ng t\u1eeb DC l\u00e0 g\u00ec?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u00f3 l\u00e0 s\u01a1 \u0111\u1ed3 m\u00e3 h\u00f3a cu\u1ed9n d\u00e2y v\u00e0 c\u00e1c ti\u1ebfp \u0111i\u1ec3m c\u1ee7a m\u1ed9t contactor DC. B\u1ea1n \u0111\u1ecdc k\u00fd hi\u1ec7u cu\u1ed9n d\u00e2y tr\u01b0\u1edbc, sau \u0111\u00f3 \u0111\u1ebfn c\u00e1c ti\u1ebfp \u0111i\u1ec3m c\u00f3 chung nh\u00e3n v\u1edbi n\u00f3.<\/p>\n<h3 style=\"margin:28px 0 12px\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ph\u00e2n bi\u1ec7t ti\u1ebfp \u0111i\u1ec3m NO v\u00e0 NC tr\u00ean b\u1ea3n v\u1ebd kh\u00ed c\u1ee5 \u0111i\u1ec7n (contactor)?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">X\u00e1c l\u1eadp tr\u1ea1ng th\u00e1i ngh\u1ec9 c\u1ee7a b\u1ea3n v\u1ebd, sau \u0111\u00f3 \u0111\u1ecdc \u0111\u1ed3 h\u1ecda ti\u1ebfp \u0111i\u1ec3m: NO m\u1edf \u1edf tr\u1ea1ng th\u00e1i ngh\u1ec9; NC \u0111\u00f3ng \u1edf tr\u1ea1ng th\u00e1i ngh\u1ec9. Kh\u00f4ng \u0111\u01b0\u1ee3c suy di\u1ec5n t\u1eeb tr\u1ea1ng th\u00e1i ch\u1ea1y th\u00f4ng th\u01b0\u1eddng c\u1ee7a m\u00e1y.<\/p>\n<h3 style=\"margin:28px 0 12px\">T\u1ea1i sao k\u00fd hi\u1ec7u cu\u1ed9n d\u00e2y contactor l\u1ea1i tr\u00f4ng kh\u00e1c nhau tr\u00ean b\u1ea3n v\u1ebd IEC v\u00e0 ANSI?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Quy t\u1eafc v\u1ebd kh\u00e1c nhau. Nhi\u1ec1u <strong>K\u00fd hi\u1ec7u kh\u1edfi \u0111\u1ed9ng t\u1eeb IEC<\/strong> c\u00e1c th\u01b0 vi\u1ec7n s\u1eed d\u1ee5ng m\u1ed9t cu\u1ed9n d\u00e2y h\u00ecnh ch\u1eef nh\u1eadt, trong khi nhi\u1ec1u b\u1ea3n v\u1ebd \u0111i\u1ec1u khi\u1ec3n theo phong c\u00e1ch ANSI\/IEEE s\u1eed d\u1ee5ng cu\u1ed9n d\u00e2y h\u00ecnh tr\u00f2n. H\u00e3y ki\u1ec3m tra ch\u00fa gi\u1ea3i c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n<h3 style=\"margin:28px 0 12px\">A1 v\u00e0 A2 tr\u00ean m\u1ed9t kh\u1edfi \u0111\u1ed9ng t\u1eeb (contactor) l\u00e0 c\u00e1c c\u1ef1c (ch\u00e2n) k\u1ebft n\u1ed1i \u0111i\u1ec7n \u00e1p ngu\u1ed3n cho cu\u1ed9n h\u00fat (cu\u1ed9n d\u00e2y \u0111i\u1ec7n t\u1eeb) c\u1ee7a contactor. \n\n- **A1**: Th\u01b0\u1eddng l\u00e0 c\u1ef1c d\u01b0\u01a1ng (+) ho\u1eb7c d\u00e2y pha (L) trong m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n.\n- **A2**: Th\u01b0\u1eddng l\u00e0 c\u1ef1c \u00e2m (-) ho\u1eb7c d\u00e2y trung t\u00ednh (N) trong m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n.\n\nKhi b\u1ea1n c\u1ea5p \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c (v\u00ed d\u1ee5: 24V DC, 220V AC, v.v.) v\u00e0o hai ch\u00e2n A1 v\u00e0 A2 n\u00e0y, d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua cu\u1ed9n d\u00e2y s\u1ebd t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng h\u00fat l\u00f5i s\u1eaft, l\u00e0m \u0111\u00f3ng ho\u1eb7c m\u1edf c\u00e1c ti\u1ebfp \u0111i\u1ec3m ch\u00ednh v\u00e0 ph\u1ee5 c\u1ee7a contactor.<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u00e2y l\u00e0 c\u00e1c k\u00fd hi\u1ec7u c\u1ef1c cu\u1ed9n d\u00e2y chung tr\u00ean nhi\u1ec1u thi\u1ebft b\u1ecb. Ch\u00fang thu\u1ed9c v\u1ec1 m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n c\u1ea5p \u0111i\u1ec7n cho cu\u1ed9n d\u00e2y, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1c c\u1ef1c ngu\u1ed3n ch\u00ednh.<\/p>\n<h3 style=\"margin:28px 0 12px\">Ti\u1ebfp \u0111i\u1ec3m ch\u00ednh v\u00e0 ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 c\u00f3 s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u kh\u00e1c nhau kh\u00f4ng?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ch\u00fang th\u01b0\u1eddng c\u00f3 chung h\u00ecnh h\u1ecdc NO\/NC. Tr\u1ecdng l\u01b0\u1ee3ng, c\u00e1c \u0111\u1ea7u c\u1ef1c v\u00e0 ng\u1eef c\u1ea3nh m\u1ea1ch \u0111i\u1ec7n cho th\u1ea5y m\u1ed9t ti\u1ebfp \u0111i\u1ec3m l\u00e0 c\u1ef1c ngu\u1ed3n hay \u0111\u01b0\u1eddng d\u1eabn ph\u1ee5 cho c\u00f9ng m\u1ed9t nh\u00e3n cu\u1ed9n d\u00e2y.<\/p>\n<h3 style=\"margin:28px 0 12px\">B\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea5u d\u00e2y m\u1ed9t kh\u1edfi \u0111\u1ed9ng t\u1eeb (contactor) ch\u1ec9 b\u1eb1ng s\u01a1 \u0111\u1ed3 nguy\u00ean l\u00fd c\u1ee7a n\u00f3 kh\u00f4ng?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Kh\u00f4ng. S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 nguy\u00ean l\u00fd cho ch\u1ee9c n\u0103ng, sau \u0111\u00f3 x\u00e1c nh\u1eadn c\u00e1c c\u1ef1c, \u0111\u1ecbnh m\u1ee9c v\u00e0 d\u1ea1ng ti\u1ebfp \u0111i\u1ec3m t\u1eeb t\u00e0i li\u1ec7u s\u1ea3n ph\u1ea9m \u0111\u00e3 ch\u1ecdn.<\/p>\n<h3 style=\"margin:28px 0 12px\">K\u00fd hi\u1ec7u ti\u1ebfp \u0111i\u1ec3m li\u00ean k\u1ebft c\u01a1 kh\u00ed c\u00f3 ngh\u0129a l\u00e0 g\u00ec?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Khi c\u00f3 m\u1eb7t, n\u00f3 x\u00e1c \u0111\u1ecbnh c\u00e1c ph\u1ea7n t\u1eed ti\u1ebfp \u0111i\u1ec3m \u0111\u00f3ng\/m\u1edf \u0111\u01b0\u1ee3c ph\u1ed1i h\u1ee3p \u0111\u1eb7c bi\u1ec7t kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p \u0111\u00f3ng c\u00f9ng m\u1ed9t l\u00fac trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u00e3 x\u00e1c \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y kh\u00f4ng \u0111\u01b0\u1ee3c ng\u1ee5 \u00fd b\u1edfi m\u1ecdi c\u1eb7p Th\u01b0\u1eddng m\u1edf\/Th\u01b0\u1eddng \u0111\u00f3ng (NO\/NC) th\u00f4ng th\u01b0\u1eddng.<\/p>\n<h3 style=\"margin:28px 0 12px\">M\u1eabu SAYOON n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi b\u1ea3n v\u1ebd kh\u1edfi \u0111\u1ed9ng t\u1eeb th\u01b0\u1eddng m\u1edf?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ed1i v\u1edbi d\u1ea1ng ti\u1ebfp \u0111i\u1ec3m 1 NO \u0111\u00e3 c\u00f4ng b\u1ed1, h\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng CZW50A v\u00e0 x\u00e1c nh\u1eadn \u0111i\u1ec7n \u00e1p cu\u1ed9n d\u00e2y c\u00f9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u1ea3i tr\u00ean trang c\u1ee7a model \u0111\u00f3. Ch\u1ec9 s\u1eed d\u1ee5ng m\u1ed9t model NC nh\u01b0 SZJB300A-D khi b\u1ea3n v\u1ebd th\u1ef1c s\u1ef1 c\u1ea7n m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn ch\u00ednh th\u01b0\u1eddng \u0111\u00f3ng.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"references\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/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\">T\u00e0i li\u1ec7u tham kh\u1ea3o K\u00fd hi\u1ec7u S\u01a1 \u0111\u1ed3 \u0110i\u1ec7n | IEEE C37.2 &amp; IEC<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/viox.com\/electrical-symbols-chart\/\" rel=\"nofollow noopener\" target=\"_blank\">B\u1ea3ng k\u00fd hi\u1ec7u \u0111i\u1ec7n ANSI v\u00e0 IEC<\/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\">Contactor ph\u1ee5 \u2014 K\u00fd hi\u1ec7u ti\u1ebfp \u0111i\u1ec3m li\u00ean k\u1ebft c\u01a1 kh\u00ed<\/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\">C\u00e1c k\u00fd hi\u1ec7u \u0111i\u1ec7n \u2014 C\u00e1ch \u0111\u1ecdc s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n? C\u00f4ng t\u1eafc t\u01a1 #3<\/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\">Gi\u00fap \u0111\u1ecdc s\u01a1 \u0111\u1ed3 \u0111\u1ea5u d\u00e2y cho kh\u1edfi \u0111\u1ed9ng t\u1eeb (Garage Journal)<\/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\">C\u00e1c k\u00fd hi\u1ec7u ngu\u1ed3n \u0111i\u1ec7n \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a? (Di\u1ec5n \u0111\u00e0n EEVblog)<\/a><\/li>\n<\/ol>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u c\u00e1ch \u0111\u1ecdc k\u00fd hi\u1ec7u c\u00f4ng t\u1eafc t\u01a1 m\u1ed9t chi\u1ec1u (DC contactor) tr\u00ean s\u01a1 \u0111\u1ed3 m\u1ea1ch: cu\u1ed9n d\u00e2y v\u00e0 ti\u1ebfp \u0111i\u1ec3m, tr\u1ea1ng th\u00e1i ngh\u1ec9 NO\/NC, ti\u00eau chu\u1ea9n IEC v\u00e0 ANSI, c\u00f9ng c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra tr\u01b0\u1edbc khi l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m ph\u00f9 h\u1ee3p.<\/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\/vi\/wp-json\/wp\/v2\/posts\/2884","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sayoon-dc.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sayoon-dc.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sayoon-dc.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/sayoon-dc.com\/vi\/wp-json\/wp\/v2\/comments?post=2884"}],"version-history":[{"count":0,"href":"https:\/\/sayoon-dc.com\/vi\/wp-json\/wp\/v2\/posts\/2884\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sayoon-dc.com\/vi\/wp-json\/wp\/v2\/media\/2867"}],"wp:attachment":[{"href":"https:\/\/sayoon-dc.com\/vi\/wp-json\/wp\/v2\/media?parent=2884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sayoon-dc.com\/vi\/wp-json\/wp\/v2\/categories?post=2884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sayoon-dc.com\/vi\/wp-json\/wp\/v2\/tags?post=2884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}