The Siemens Contactor Relay is a robust 4NO auxiliary device designed for 230V AC, 50/60Hz systems. Built for reliability, it offers a mechanical lifespan of up to 10 million cycles and features screw terminals for secure connections. With an insulation voltage of 1,000V, surge resistance of 6kV, and IP20 front protection, this relay is ideal for industrial applications requiring durable and efficient performance.