{"id":1668,"date":"2026-05-08T11:54:27","date_gmt":"2026-05-08T03:54:27","guid":{"rendered":"https:\/\/sayoon-dc.com\/?post_type=product&p=1668"},"modified":"2026-07-16T17:46:50","modified_gmt":"2026-07-16T09:46:50","slug":"sev400ah-high-voltage-epoxy-resin-sealed-dc-contactor","status":"publish","type":"product","link":"https:\/\/sayoon-dc.com\/ru\/product\/sev400ah-high-voltage-epoxy-resin-sealed-dc-contactor\/","title":{"rendered":"SEV400AH High Voltage Epoxy Resin Sealed DC Contactor"},"content":{"rendered":"

FEATURES<\/strong><\/h2>\n
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This product has a variety of advantages and is suitable for switch control of new energy electric vehicles, charging facilities, photovoltaic and wind power generation systems, automotive air conditioners, communication power supplies, uninterruptible power supplies (UPS) and other electrical control circuits. Its features include small size, large load capacity, no sparks, long service life, simple maintenance, etc., and is deeply loved by users.<\/div>\n
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1. Wide range of application: This product is not only suitable for new energy electric vehicles and charging facilities, but also effectively supports the operation of photovoltaic and wind power generation systems to meet the needs of modern renewable energy. In addition, its applications in automotive air conditioning and communication power supplies have further broadened its market prospects.<\/div>\n
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2. Efficient electrical performance: The design of the product allows it to operate within a load range of 30A to 1000A, and a voltage range from 5V to 1000V DC, which can meet the power needs of different users. The product cavity is filled with a rare mixed gas, which enhances its arc extinguishing ability and ensures safety in high voltage environments.<\/div>\n
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3. Safety Guarantee: This product adopts an insulating structure, which can work safely in flammable or hazardous environments, avoid oxidation and contamination of coils and contacts, and ensure long-term stable operation.<\/div>\n
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4. Small size and light weight: Compared with similar products, this product has obvious advantages in size and weight, making it easy to install and use, while reducing transportation and storage costs.<\/div>\n
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5. Comply with standards: Products are produced in strict accordance with JB2286-78, JB3974-85, YD\/585-92, YD\/T512-92 and other standards, and have been inspected by relevant testing units to ensure compliance with standard specifications and quality Reliable and able to meet users’ needs for many years.<\/div>\n
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With its excellent performance and safety, this product has become the ideal choice for users in the field of electrical control and can meet the needs of users to the greatest extent.<\/div>\n<\/div>\n

SAYOON MODEL IMPLICATION<\/strong><\/h2>\n
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SEV<\/p>\n<\/td>\n

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400<\/p>\n<\/td>\n

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A<\/p>\n<\/td>\n

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H<\/p>\n<\/td>\n

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X<\/p>\n<\/td>\n

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L<\/p>\n<\/td>\n

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-\u25a1<\/p>\n<\/td>\n

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\u25a0<\/p>\n<\/td>\n

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\/12V<\/p>\n<\/td>\n

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\n<\/td>\n<\/tr>\n

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

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

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

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

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

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

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7<\/p>\n<\/td>\n

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8<\/p>\n<\/td>\n

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9<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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

Product type<\/b><\/b><\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
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2<\/p>\n<\/td>\n

Rated current<\/b><\/b><\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
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3<\/p>\n<\/td>\n

Circuit structure:<\/b>\u00a0A<\/b>-Normally open; B<\/b>-Normally closed; F<\/b>-Normally open with one auxiliary switch (the auxiliary switch and main contact have the same structure); G-One normally closed with one auxiliary (auxiliary switch and main contact have the same structure). (for other auxiliary switch structures, add 2 or 3 numbers after the model to describe the auxiliary switch structure)<\/td>\n<\/tr>\n
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4<\/p>\n<\/td>\n

Coil type: <\/b>H<\/b>-With coil economizer; K<\/b>-Two joint magnetic retention (Single coil, Two joint self-locking); 2K<\/b>-Three joint magnetic retention (Double coil, Three joint self-locking); P<\/b>-Signal control<\/td>\n<\/tr>\n
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5<\/p>\n<\/td>\n

Coil outgoing mode: X<\/b>-Wire (390mm); P<\/b>-Spade terminals (4.8); W<\/b>-Thread (M4); O<\/b>-Other<\/td>\n<\/tr>\n
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6<\/p>\n<\/td>\n

Mounting bracket type: L<\/b>-Vertical (default)<\/td>\n<\/tr>\n
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7<\/p>\n<\/td>\n

None<\/b>: Auxiliary switch and main contact have the same structure (default); -2<\/b>: The structure of auxiliary switch and main contact is opposite;\u00a0-3<\/b>: Special auxiliary switch structure<\/td>\n<\/tr>\n
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8<\/p>\n<\/td>\n

Other special functions: V<\/b>-With capacitive type load; N<\/b>-No polarity<\/td>\n<\/tr>\n
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9<\/p>\n<\/td>\n

Coil rated voltage:<\/b>\u00a012V, 24V, 48V, 9-36V, 48-72V etc.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

USES<\/strong><\/h2>\n
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The normally open contact of this design allows the device to respond quickly when started, ensuring the stability and reliability of the power supply. For charging piles and electric four-wheelers, fast power connections can greatly improve charging efficiency and shorten user waiting time. At the same time, in the application of new energy vehicles, it can effectively support the use of green energy and promote sustainable development.<\/div>\n
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In energy-saving and environmentally friendly systems, the application of this contact can achieve more efficient energy management, reduce energy consumption, and reduce the impact on the environment. For road traffic lighting systems, the design of normally open contacts can ensure that lighting equipment can be turned on in time at night or in low-light environments, improving driving safety.<\/div>\n
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In programmable power supplies and uninterruptible power supply equipment, the flexibility of normally open contacts allows users to configure them according to actual needs to meet power needs in different scenarios. This multifunctional applicability makes the utility model have broad application prospects in modern power systems.<\/div>\n<\/div>\n

TECHNICAL PARAMETERS: (Version 3.14)<\/strong><\/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\n\n\n
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\u00a0SAYOON Product Type<\/strong><\/p>\n<\/td>\n

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\u00a0SEV400AH<\/strong><\/p>\n<\/td>\n<\/tr>\n

\u00a0Contact form<\/td>\n\u00a01 NO(SPST-NO) or 1NC(SPST-NC)<\/td>\n<\/tr>\n
\u00a0Coil Rated voltage (DC V)<\/td>\n\u00a0DC6V,12V,24V,36V,48V,60V,72V,84V,120V,150V,DC220V,AC220V etc.<\/td>\n<\/tr>\n
\u00a0Contact voltage (DC V)<\/td>\n\u00a05-1000V<\/td>\n<\/tr>\n
\u00a0Contact circuit rated load current (DC-1)<\/td>\n\u00a0400A<\/td>\n<\/tr>\n
\u00a0Typical voltage drop across contacts per 100A<\/td>\n\u00a0\u226f80mV<\/td>\n<\/tr>\n
\u00a0The cooling pull-in voltage at (20\u00b15)\u2103 (V)<\/td>\n\u00a0\u226f70%<\/td>\n<\/tr>\n
\u00a0The cooling drop-out voltage at (20\u00b15)\u2103 (V)<\/td>\n\u00a0\u226f35%,\u226e5%<\/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\u00a080ms<\/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\u00a07ms<\/td>\n<\/tr>\n
\u00a0Insulation Resistance<\/td>\n\u00a0100M\u03a9<\/td>\n<\/tr>\n
\u00a0Electric strength to resist<\/td>\n\u00a050Hz\/60Hz 2200VAC 1minute<\/td>\n<\/tr>\n
\u00a0Typical fault currents which can be ruptured<\/td>\n\u00a01500A\/5ms at 48V DC<\/td>\n<\/tr>\n
\u00a0Coil power (W)<\/td>\n\u00a0H: Start 30-60, Keep 4-10<\/td>\n<\/tr>\n
\u00a0Temperature rise of coil (K)<\/td>\n\u00a0\u226445<\/td>\n<\/tr>\n
\u00a0Temperature rise on outgoing terminal (K)<\/td>\n\u00a0\u226465<\/td>\n<\/tr>\n
\u00a0Electrical life<\/td>\n\u00a020,000 times<\/td>\n<\/tr>\n
\u00a0Mechanical life<\/td>\n\u00a0300,000 times<\/td>\n<\/tr>\n
\u00a0Work specification<\/td>\n\u00a0Continuous<\/td>\n<\/tr>\n
\u00a0Contact material<\/td>\n\u00a0Alloy<\/td>\n<\/tr>\n
\u00a0Inrush time (max)<\/td>\n\u00a0130ms<\/td>\n<\/tr>\n
\u00a0Maximum switching current<\/td>\n\u00a02500A 320VDC\u00a0(more than once)<\/td>\n<\/tr>\n
\u00a0Maximum switching power<\/td>\n\u00a0800kW<\/td>\n<\/tr>\n
\u00a0Load terminal type<\/td>\n\u00a0M10 Screw<\/td>\n<\/tr>\n
\u00a0Coil terminal type<\/td>\n\u00a00.3 square silicone wire, 390mm long<\/td>\n<\/tr>\n
\u00a0Auxiliary contact rated load (optional)<\/td>\n\u00a03A\/30VDC<\/td>\n<\/tr>\n
\u00a0Testing organization certification<\/td>\n\u00a0CE,FCC,RoHS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Note: Due to different usage environments of customers, the emphasis on functions is also different. In order to improve the overall performance of our products, SAYOON may adjust coil parameters, temperature rise, etc. The above parameters are for reference only. For specific details, please refer to the SAYOON DC contactor selection and usage guide.<\/div>\n
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In different application scenarios, customer needs for products may be different. For example, in high or low temperature environments, the performance of the equipment may be affected, so we will optimize the parameters of the coil according to the actual situation to ensure that the product can operate stably under various conditions. In addition, temperature rise control is also one of our focuses to prevent equipment from overheating and affecting its service life.<\/div>\n
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In order to ensure that users can get the best experience, we recommend that customers carefully read the relevant selection and usage guide when purchasing and using SAYOON DC contactors. These guides will provide detailed technical parameters, usage recommendations and maintenance precautions to help users make informed choices based on their specific needs.<\/div>\n
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In this way, we hope to provide customers with more personalized solutions to ensure that products can perform optimally in various environments and meet the diverse needs of users.<\/div>\n<\/div>\n

LOAD CHARACTERISTIC CURVE<\/strong><\/h2>\n
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  • \"product<\/li>\n
  • \"product<\/li>\n<\/ul>\n

    INSTALLATION DIAGRAM<\/strong><\/h2>\n
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    WIRING DIAGRAM<\/strong><\/h2>\n
    \"product<\/div>\n

    COIL TEMPERATURE CURVE<\/strong><\/h2>\n
    \"product<\/div>\n

    MECHANICAL ABILITY and USE of the ENVIRONMENT<\/strong><\/h2>\n
    \n\n\n\n\n\n\n\n\n\n\n\n
    \u00a0Contact lead M10 tightening torque (N.m)<\/td>\n\u00a0\u226f20.5 appropriate<\/td>\n<\/tr>\n
    \u00a0Coil lead mode<\/td>\n\u00a0Wire dipping tin (red positive and black negative)<\/td>\n<\/tr>\n
    \u00a0Ambient temperature<\/td>\n\u00a0-40~+85\u2103<\/td>\n<\/tr>\n
    \u00a0Relative humidity<\/td>\n\u00a0+20\u2103 98%<\/td>\n<\/tr>\n
    \u00a0Vibration freq. atthe fixed position<\/td>\n\u00a03G, 1\uff5e50Hz amplitude 0.5mm<\/td>\n<\/tr>\n
    \u00a0Concussion<\/td>\n\u00a0(60\uff5e100) time\/minute\u3001acceleration\u22644g<\/td>\n<\/tr>\n
    \u00a0Altitude<\/td>\n\u00a02000m<\/td>\n<\/tr>\n
    \u00a0Installation direction<\/td>\n\u00a0Random<\/td>\n<\/tr>\n
    \u00a0International Protection<\/td>\n\u00a0IP68<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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

    \u00a0SAYOON Product Type<\/strong><\/p>\n<\/td>\n

    		\n

    \u00a0SEV400AH<\/strong><\/p>\n<\/td>\n<\/tr>\n

    \u00a0U.N.W.<\/td>\n\u00a01366g<\/td>\n<\/tr>\n
    \u00a0Mounting bracket type<\/td>\n\u00a0L Vertical(default)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n
    When placing an order, it is critical that you provide the required information accurately. Not only does this help us process your order quickly, it also ensures you get the product you need. Specifically:<\/div>\n
    <\/div>\n
    1. Product name and model: A clear product name and complete model number can help us accurately identify the product you need and avoid confusion.<\/div>\n
    <\/div>\n
    2. Control coil voltage specifications: Different application scenarios may require different control voltages. Providing this information can ensure that the product works properly in your system.<\/div>\n
    <\/div>\n
    3. Installation frame type: Select the appropriate frame type according to your installation needs to facilitate subsequent installation and maintenance.<\/div>\n
    <\/div>\n
    4. Demand for Auxiliary Contacts: If you need additional auxiliary contacts, please indicate this clearly in your order so that we can provide you with the corresponding configuration.<\/div>\n
    <\/div>\n
    5. Order quantity: A clear order quantity helps us arrange production and shipment reasonably to ensure timely delivery.<\/div>\n
    <\/div>\n
    In addition, for products that require special voltage specifications, users can contact us for special orders, and we will be happy to provide you with customized solutions. By providing detailed order information, you will be able to more smoothly obtain the product you need, ensuring it performs optimally in your application.<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Looking for a high voltage epoxy resin sealed DC contactor? Check out the SEV400AH model for reliable and efficient performance<\/p>","protected":false},"featured_media":1669,"template":"","meta":{"_gspb_post_css":""},"product_brand":[],"product_cat":[47],"product_tag":[],"class_list":["post-1668","product","type-product","status-publish","has-post-thumbnail","product_cat-sev-series-hv-dc-contactor","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/sayoon-dc.com\/ru\/wp-json\/wp\/v2\/product\/1668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sayoon-dc.com\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/sayoon-dc.com\/ru\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sayoon-dc.com\/ru\/wp-json\/wp\/v2\/media\/1669"}],"wp:attachment":[{"href":"https:\/\/sayoon-dc.com\/ru\/wp-json\/wp\/v2\/media?parent=1668"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/sayoon-dc.com\/ru\/wp-json\/wp\/v2\/product_brand?post=1668"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/sayoon-dc.com\/ru\/wp-json\/wp\/v2\/product_cat?post=1668"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/sayoon-dc.com\/ru\/wp-json\/wp\/v2\/product_tag?post=1668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}