3VA9978-0AB23 SIEMENS

The 3VA9978-0AB23 from Siemens is an electrical alarm switch designed as an accessory for 3VA6 molded case circuit breakers. This component features changeover contacts, specifically of type HQ with a 7mm dimension, ensuring reliable signal transmission during alarm events. Its electronic compatibility allows for seamless integration with modern control systems. This alarm switch provides critical status indication, enhancing the monitoring and safety capabilities of the circuit breaker. It promptly signals abnormal electrical conditions, enabling swift response and preventing potential damage. The changeover contacts facilitate versatile wiring configurations, adapting to diverse application requirements. The HQ type contacts ensure robust and dependable performance in demanding industrial environments. By integrating this alarm switch, users gain enhanced control and awareness of their electrical systems. This accessory is essential for applications requiring continuous monitoring and immediate notification of electrical faults.