China NVR6V-250C HVDC Relay - Industrial-Grade High Voltage DC Relay from Leading Suppliers and Factory

NVR6V-250C possesses a far superior overload tolerance capability compared to industry standards. Under the conditions of 85℃ ambient temperature, rated coil voltage, and 60mm² wire connection:

• 250A current can operate continuously for a long time;
• 350A current can be tolerated for 5 minutes;
• 500A current can be tolerated for 2 minutes;
• 900A current can be tolerated for 30 seconds;
• 1000A current can be tolerated for 25 seconds.

This wide range of overload tolerance enables NVR6V-250C to handle the large current shock during system startup and short-term overload conditions, significantly reducing the probability of relay malfunctions or damage.

The durability of NVR6V-250C has been rigorously tested and verified, fully meeting the long-life requirements of industrial-grade products:

• Electrical Durability: 20,000 on-off cycles at 14.5V DC/250A; 1,000 on-off cycles at 450V DC/250A; 200 on-off cycles at 800V DC/250A;
• Mechanical Durability: 200,000 on-off cycles without load, with mechanical life far exceeding industry norms;
• Short Circuit Tolerance: 5ms tolerance at 450V DC/8000A, during which the product's appearance structure remains intact, without fire, smoke, or cracks, effectively avoiding secondary safety issues caused by short circuits.

NVR6V-250C demonstrates outstanding insulation performance: The insulation resistance tests between open contacts, and between the coil and contacts before breakage are all ≥ 1000MΩ (1000V DC test), with dielectric withstand voltages reaching 4000V AC and 3000V AC, fully meeting the insulation safety requirements for high-voltage systems. In terms of response speed, the absorption time of NVR6V-250C is ≤ 30ms, the release time is ≤ 10ms, and the return time is ≤ 5ms. The rapid response capability can cut off the circuit immediately upon a fault, minimizing fault losses to the greatest extent.

NVR6V-250C supports normal operation within a wide temperature range of -40℃ to +85℃, a humidity range of 5% to 85%, and an altitude of below 4000m. There are no special requirements for installation direction. It can operate stably in both cold northern outdoor conditions and humid southern working environments. The product has also passed rigorous mechanical shock and vibration tests: capable of withstanding a destructive impact of 588m/s², random vibration of 10 to 500Hz, 49m/s², fully meeting the usage requirements in vibrating environments such as vehicles and mobile power stations.