High-Voltage DC Relay NVR6Y-400Y: 400A, 1000VDC, China Suppliers & Factory for New Energy Battery Systems

This high voltage DC relay, launched by Sichuan Suchen New Energy, has a rated current of 400A and a maximum switching voltage of 1000VDC. The contacts are made of copper alloy, with a contact resistance of less than 1.5mΩ (tested at 400A). The coil adopts an internal PWM wide-voltage design (9~36V), with a startup power consumption of 40W and a holding power consumption of only 4W, resulting in significant energy-saving effects. It takes 40ms to engage and 25ms to release. The load side has no polarity, while the coil has polarity. Be sure to pay attention to the positive and negative terminals when wiring. An auxiliary contact can be optionally selected to meet the requirements of adhesion detection or status signal feedback. The entire machine weighs approximately 435g, and the version with an auxiliary contact weighs approximately 442g.

Under conditions of an 85℃ environment and a 350mm² copper busbar, it can operate continuously at 400A for 450A for 300 seconds, 600A for 120 seconds, and 1000A for 25 seconds. The maximum allowable temperature is 130℃, and the short-term safety limit is 180℃. The maximum breaking current is 2000A (320VDC). Before the insulation resistance test, it should be above 1000MΩ, and the withstand voltage between the open contacts is 3000VAC. Electrical life: 60V/400A connection and 1000V/250A breaking each 1000 times, mechanical life 200,000 times. Resilience: 5G (10 - 2000Hz), impact resistance: 50G.

Suitable for scenarios such as energy storage systems, battery packs for new energy commercial vehicles, charging piles, industrial power distribution, etc. Working temperature range: -40℃ to +85℃. For altitudes over 2000m, capacity needs to be reduced. At the load end, use M8 screws with a torque of 8~10N·m, and a 4~6mm thick copper busbar. For installation, use M5 screws with a torque of 3~4N·m. The static contacts are made of pure copper. Before vehicle assembly, check the oxidation condition of the contacts after storage for more than three months. This high-voltage DC relay is delivered with default accessories such as screws and washers. Unlike many products on the market, it does not require additional accessories. The product complies with RoHS 2.0.

The 400A level high-voltage DC relays are widely used in the energy storage and commercial vehicle markets, and the competition is quite intense. The key difference of NVR6V-400Y lies in its built-in PWM wide-voltage coil, which has good adaptability to wide voltage inputs and maintains a power consumption of only 4W. In systems with continuous high-current operation, the heat control is more manageable. The latest specifications and purchasing details can be directly contacted with Sichuan Suchen New Energy Co., Ltd.