{"id":2295,"date":"2026-07-17T12:44:14","date_gmt":"2026-07-17T04:44:14","guid":{"rendered":"https:\/\/sayoon-dc.com\/?post_type=product&p=2295"},"modified":"2026-07-25T10:05:14","modified_gmt":"2026-07-25T02:05:14","slug":"mzj-300b-normally-closed-dc-contactor","status":"publish","type":"product","link":"https:\/\/sayoon-dc.com\/it\/product\/mzj-300b-normally-closed-dc-contactor\/","title":{"rendered":"Contattore DC normalmente chiuso MZJ-300B"},"content":{"rendered":"

FEATURES<\/strong><\/h2>\n

Suitable for electric forklift, battery cars, tractors, excavators, brick machine, cleaning vehicles, automotive air-conditioning, communication power supply, uninterruptible power supply, and electroplating electronic control system control circuits. Advantages include compact size, large load capacity, long service life and easy maintenance. Products are designed with reference to JB2286-78, JB3974-85, YD\/585-92 and YD\/T512-92 requirements.<\/p>\n

IMPLICAZIONE DEL MODELLO SAYOON<\/strong><\/h2>\n\n\n\n\n
MZJ<\/td>\n-300B<\/td>\n-S<\/td>\n-\u25a1<\/td>\n-\u25a1<\/td>\n\/\u25a1<\/td>\n<\/td>\n<\/tr>\n
1<\/td>\n2<\/td>\n3<\/td>\n4<\/td>\n5<\/td>\n6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n
\n

1<\/p>\n<\/td>\n

Tipo di prodotto<\/b><\/b><\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n

2<\/p>\n<\/td>\n

Corrente nominale<\/b><\/b><\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n

3<\/p>\n<\/td>\n

Auxiliary switch: None<\/strong>-Without auxiliary switch; S<\/strong>-With auxiliary switch<\/td>\n<\/tr>\n
\n

4<\/p>\n<\/td>\n

Mounting bracket type: None<\/strong>-M Horizontal (default); E<\/strong>-Level embedded; X<\/strong>-Oblique; L(N)<\/strong>-Vertical; E1<\/strong>-Level embedded single direction<\/td>\n<\/tr>\n
\n

5<\/p>\n<\/td>\n

Other function codes<\/strong><\/td>\n<\/tr>\n
\n

6<\/p>\n<\/td>\n

Coil rated voltage:<\/strong> 12V, 24V, 36V, 48V, 60V, 72V etc.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

UTILIZZI<\/strong><\/h2>\n

This product has one normally closed contact (1 NC), for electric vehicles, telecommunication equipment, engineering machinery, car batteries, electric forklift trucks, trains, ships, and electronic control systems such as uninterruptible power supply.<\/p>\n

TECHNICAL PARAMETERS:<\/strong>\u00a0\u00a0(Version 1.83)<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

\u00a0Tipo di prodotto SAYOON<\/strong><\/p>\n<\/td>\n

\n

MZJ-300B<\/p>\n<\/td>\n<\/tr>\n

\u00a0Modulo di contatto<\/td>\n\u00a01 NC<\/td>\n<\/tr>\n
\u00a0Coil Rated voltage (DC V)<\/td>\n\u00a06V,12V,24V,36V,48V,60V,72V,84V,120V,150V,220V etc.<\/td>\n<\/tr>\n
\u00a0Contact voltage (DC V)<\/td>\n\u00a0\u226460V<\/td>\n<\/tr>\n
\u00a0Rated load current of contact 48V circuit (DC-1)<\/td>\n\u00a0300A<\/td>\n<\/tr>\n
\u00a0Caduta di tensione tipica ai capi dei contatti per 100A<\/td>\n\u00a0\u226480mV<\/td>\n<\/tr>\n
\u00a0The cooling pull-in voltage at (20\u00b15)\u2103 (V)<\/td>\n\u00a0\u226470%<\/td>\n<\/tr>\n
\u00a0The cooling drop-out voltage at (20\u00b15)\u2103 (V)<\/td>\n\u00a0\u226435%, \u22655%<\/td>\n<\/tr>\n
\u00a0Working voltage range of 40\u2103 coil<\/td>\n\u00a00.8-1.2Us<\/td>\n<\/tr>\n
\u00a0Drop-out time (n\/o contacts to open)<\/td>\n\u00a010ms<\/td>\n<\/tr>\n
\u00a0Pull-in time (n\/o contacts to close)<\/td>\n\u00a020ms<\/td>\n<\/tr>\n
\u00a0Maximum bounce time for contact connection<\/td>\n\u00a010ms<\/td>\n<\/tr>\n
\u00a0Maximum bounce time for contact disconnection<\/td>\n\u00a03ms<\/td>\n<\/tr>\n
\u00a0Insulation resistance<\/td>\n\u00a020 M\u03a9<\/td>\n<\/tr>\n
\u00a0Resistenza elettrica<\/td>\n\u00a050Hz\/60Hz 1000VAC 1 minuto<\/td>\n<\/tr>\n
\u00a0Correnti di guasto tipiche che possono essere interrotte<\/td>\n\u00a01000A\/5ms a 48V\/CC<\/td>\n<\/tr>\n
\u00a0Coil power (W)<\/td>\n\u00a07-15<\/td>\n<\/tr>\n
\u00a0Temperature rise of coil (K)<\/td>\n\u00a0\u226480<\/td>\n<\/tr>\n
\u00a0Temperature rise on outgoing terminal (K)<\/td>\n\u00a0\u226465<\/td>\n<\/tr>\n
\u00a0Vita elettrica<\/td>\n\u00a020.000 volte<\/td>\n<\/tr>\n
\u00a0Vita meccanica<\/td>\n\u00a0300,000 times<\/td>\n<\/tr>\n
\u00a0Specifica di lavoro<\/td>\n\u00a0Continuo<\/td>\n<\/tr>\n
\u00a0Contact material<\/td>\n\u00a0Ag alloy<\/td>\n<\/tr>\n
\u00a0Load terminal type<\/td>\n\u00a0M8 Screw<\/td>\n<\/tr>\n
\u00a0Coil terminal type<\/td>\n\u00a0M4 Screw<\/td>\n<\/tr>\n
\u00a0Carico nominale del contatto ausiliario (opzionale)<\/td>\n\u00a02A\/48VDC, 5A\/24VDC\uff0c1NO 1NC<\/td>\n<\/tr>\n
\u00a0Testing organization certification<\/td>\n\u00a0CE,FCC,RoHS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Note:As regarding to the different using environments of customers which requires different focus of the functions,and in order to improve the comprehensive properties of our products,sayoon may adjust the coil parameters,temperature rise and so on. The above parameters are for reference only, For details, please refer to the guidelines for selection and use of the SAYOON DC contactor.<\/p>\n

LOAD CHARACTERISTIC CURVE:<\/strong><\/h2>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

INSTALLATION DIAGRAM:<\/strong><\/h2>\n

\"\"<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

WIRING DIAGRAM:<\/strong><\/h2>\n

\"\"<\/p>\n

TEMPERATURE CURVE:<\/strong><\/h2>\n

\"\"<\/p>\n

MECHANICAL ABILITY and USE of the ENVIRONMENT:<\/strong><\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Contact lead M8 tightening torque (N.m)<\/td>\n\u00a0\u226f9,0 appropriato<\/td>\n<\/tr>\n
\u00a0Coil lead M4 tightening torque (N.m)<\/td>\n\u00a0\u226f1.2 appropriate<\/td>\n<\/tr>\n
\u00a0Temperatura ambiente<\/td>\n\u00a0-25~+70\u2103<\/td>\n<\/tr>\n
\u00a0Umidit\u00e0 relativa<\/td>\n\u00a0+20 \u00b0C 98%<\/td>\n<\/tr>\n
\u00a0Frequenza di vibrazione nella posizione fissa<\/td>\n\u00a03G, ampiezza 1-50 Hz 0,5 mm<\/td>\n<\/tr>\n
\u00a0Shock<\/td>\n\u00a0(60\uff5e100) times\/minute, acceleration\u22644g<\/td>\n<\/tr>\n
\u00a0Altitudine<\/td>\n\u00a02000m<\/td>\n<\/tr>\n
\u00a0Direzione di installazione<\/td>\n\u00a0Casuale<\/td>\n<\/tr>\n
\u00a0International Protection<\/td>\n\u00a0IP40 (According IEC60947)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

ORDER INSTRUCTION:<\/strong><\/h2>\n\n\n\n\n\n\n\n\n
\n

\u00a0Tipo di prodotto SAYOON<\/strong><\/p>\n<\/td>\n

\n

\u00a0SZJB300A-D<\/strong><\/p>\n<\/td>\n<\/tr>\n

\u00a0U.N.W.<\/td>\n\u00a0530g<\/td>\n<\/tr>\n
\u00a0U.G.W.<\/td>\n\u00a0535g<\/td>\n<\/tr>\n
\u00a0Qt\u00e0 confezione.<\/td>\n\u00a050pcs<\/td>\n<\/tr>\n
\u00a0DIM.(cm)<\/td>\n\u00a046.5*20.5*34.5<\/td>\n<\/tr>\n
\u00a0Mounting bracket type<\/td>\n\u00a0None – M Horizontal(default), E Level Embedded, X Oblique, L (N) Vertical, E1 Level embedded single direction<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

When ordering, please state the following: name, full model, control coil voltage specification, installation frame type, whether with auxiliary contact, order quantity. For example: DC Contactor SZJB300A-D\/24V 100pcs, indicating the load rated current 300A, without auxiliary contact, default mounting bracket, coil control voltage 24V purchase 100pcs. Special voltage specification products, such as user needs can be special order.<\/p>","protected":false},"excerpt":{"rendered":"

Looking for a MZJ-300B Normally Closed DC Contactor? Find reliable and high-quality products for purchase here.<\/p>","protected":false},"featured_media":2291,"template":"","meta":{"_gspb_post_css":""},"product_brand":[],"product_cat":[60],"product_tag":[],"class_list":["post-2295","product","type-product","status-publish","has-post-thumbnail","product_cat-mzj-series-dc-contactor","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/sayoon-dc.com\/it\/wp-json\/wp\/v2\/product\/2295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sayoon-dc.com\/it\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/sayoon-dc.com\/it\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sayoon-dc.com\/it\/wp-json\/wp\/v2\/media\/2291"}],"wp:attachment":[{"href":"https:\/\/sayoon-dc.com\/it\/wp-json\/wp\/v2\/media?parent=2295"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/sayoon-dc.com\/it\/wp-json\/wp\/v2\/product_brand?post=2295"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/sayoon-dc.com\/it\/wp-json\/wp\/v2\/product_cat?post=2295"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/sayoon-dc.com\/it\/wp-json\/wp\/v2\/product_tag?post=2295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}