NVR6V-400M DC relay for new energy automobile

The NVR6V-400M is an industrial-grade High Voltage DC relay specifically designed for high-voltage DC scenarios. It features a ceramic sealed structure and permanent magnet arc-blowing technology, ensuring reliable on-off control in high-voltage and high-current environments. This series of High Voltage DC relays complies with RoHS environmental protection requirements, with the contact part having an IP67 sealing protection level. It supports a rated current of 400A and a DC voltage carrying capacity of 1000V, making it suitable for high-demand application scenarios such as new energy vehicles, energy storage systems, photovoltaic grid connection, and DC charging piles. As a core component of new power control, this High Voltage DC relay offers the advantages of small size, light weight, and high safety and reliability. It also supports customized requirements for installation positions and contact parameters, fully meeting the differentiated usage requirements of various industrial scenarios.

Rated Load Current 400A (compatible with 200 mm² copper strip)
Maximum Switching Voltage 1000V DC
Maximum Breakdown Capability 2000A/1000V DC (single operation)
Coil Power Supply 12VDC/24V DC optional, dual coil design, power consumption only 6W
Contact Form One set of normally open main contacts, copper alloy contact material, contact resistance ≤0.5mΩ @400A
Action Time Suction ≤ 40ms, Release ≤ 15ms, Rebound ≤ 5ms
Environmental Adaptation Operating/Storage Temperature: -40℃ to +85℃. It is compatible with usage at an altitude of below 4000m. Resistant to 5G random vibration and 50G mechanical shock.

Product Detail

Core performance advantages

1. High reliability arc extinguishing and sealing design

As a professional High Voltage DC relay, NVR6V-400M adopts permanent magnet arc blowing technology. The contacts are sealed inside a ceramic cavity and filled with high arc-extinguishing performance cooling gas, completely avoiding the erosion of the contacts by the DC arc, and solving the industry pain points of no natural zero-crossing point and difficult arc extinction in high-voltage DC circuits. The IP67 level of protection can effectively prevent dust and moisture from invading, and is suitable for outdoor, vehicle-mounted and other complex working conditions.

2. Wide current tolerance range

This High Voltage DC relay supports a continuous current of 400A, and has outstanding short-term current tolerance: 500A can be carried for 2000s, 750A for 200s, 1000A for 65s, 1350A for 28s, and the contacts do not open under currents ranging from 2000 to 8000A, only possible to stick together, no fire or explosion, fully covering extreme current scenarios such as short circuits and surges.

3. Ultra-long service life performance

In terms of electrical life, under resistive load at 450V/10A, it can achieve 25,000 times of opening and closing; under resistive load at 450V/400A, it can achieve 1,000 times of opening and closing; under capacitive load at 22.5V/140A, it can achieve 75,000 times of connection; the mechanical life is up to 200,000 times, far exceeding the average level of ordinary industrial relays, effectively reducing the maintenance cost of the equipment in the later stage.

4. Excellent insulation withstand voltage performance

The insulation resistance between the open contacts is ≥ 1000MΩ@1000V DC, the insulation resistance between the closed contacts and the coil is ≥ 50MΩ@1000V DC; before the dielectric withstand test, it can reach 3000V AC (50/60Hz, 1min), and still maintains 2250V AC withstand capability after the test, complying with the safety specifications of high-voltage electrical equipment, and eliminating the risk of high-voltage breakdown.

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