Siemens Auxiliary Switch is a reliable front-mounted 1NO accessory for 3MH7 Contactor Relays and 3MT7 Power Contactors. Designed for seamless integration, it operates at 10A (AC-12) for 24V and 230V applications. Built with a durable mechanical lifespan of 10 million cycles and an electrical endurance of 100,000 cycles at 230V AC-15, it ensures long-term performance. With IP20 protection and 6kV surge resistance, this auxiliary switch is ideal for industrial use.