Siemens 3VA5217-5EC31-0AA0 Molded Case Circuit Breaker

This breaker uses a TM230 thermal-magnetic trip unit. It provides Long-Time and Instantaneous (LI) protection with a fixed continuous current setting (Ir) and an adjustable magnetic short-circuit pickup (Ii) for precise high-fault field calibration.

This 175-amp circuit breaker is built on the Siemens 3VA52 frame, which corresponds to the 250A maximum physical frame size for the 3VA5 UL molded case series.

Yes, the 3VA5217-5EC31-0AA0 is the modern SENTRON 3VA5 equivalent for the legacy FXD63B175. When installing it as a substitute in an older FD-frame enclosure, a retrofit mounting kit is required.

This specific unit features a Class M (Medium) breaking capacity, delivering up to a 35kA interrupting rating at 480V and 18kA at 600V.

Yes, the 3VA5217-5EC31-0AA0 is HACR rated, making it fully approved for group motor protection in commercial heating, air conditioning, and refrigeration systems.

Yes, the 3VA5 series utilizes a current-limiting, trip-free mechanism designed to rapidly clear high-level short circuits, minimizing let-through energy to protect downstream electrical equipment.

Yes, this molded case circuit breaker is rated for reverse feed applications, allowing line power to be connected to either the top or bottom terminals without compromising the trip integrity.

It is certified to UL 489, CSA, and IEC 60947-2 standards, ensuring safe operation and compliance for industrial power distribution across both North American and global markets.

It is engineered to operate safely in ambient environments ranging from -25 degrees Celsius to 70 degrees Celsius (-13 degrees Fahrenheit to 158 degrees Fahrenheit).