The EV250-1B is a high-current, single-pole single-throw normally open (SPST-NO) relay designed for power switching. It features a nominal coil voltage of 24 Vdc and can handle a maximum continuous current of 400 A. The relay is capable of interrupting 2,500 A at 320 Vdc and has a maximum contact resistance of 0.0003 ohms. Designed for harsh environments, it operates over a temperature range of -40°C to +85°C. This relay is ideal for applications such as circuit protection, battery switching, and main power safety disconnects.