1SDA073753R1 ABB 4 CHANGEOVER CONTACT OPEN-CLOSED V<(><<)>400V AC AUX 4Q 400VAC E2.2…E6.2

The ABB 1SDA073753R1 is an auxiliary contact accessory with four changeover (also known as double-throw) contacts designed for use with ABB SACE Emax 2 circuit breakers, specifically models E2.2 to E6.2. This accessory helps to monitor the open and closed status of the circuit breaker and is valuable for advanced control and signaling applications. Key details include:

• Voltage Rating: Rated for up to 400V AC, making it suitable for higher voltage environments.
• Configuration: Equipped with four changeover contacts (4Q), allowing it to switch between normally open (NO) and normally closed (NC) states as the breaker status changes.
• Compatibility: Designed specifically for ABB Emax 2 breakers (models E2.2, E4.2, and E6.2) to ensure compatibility and easy installation.
• Function: Provides precise feedback on the breaker status (open or closed), allowing integration into control and monitoring systems.
• Application: Used in industrial and commercial electrical systems to enhance operational monitoring, remote status indication, and system automation.

This auxiliary contact accessory is ideal for applications that require real-time monitoring and control of circuit breakers in complex electrical systems, supporting system safety, automation, and maintenance efficiency.