3VA5150-1MU31-0AA0 SIEMENS

The 3VA5150-1MU31-0AA0 is a robust 3-pole circuit breaker from Siemens, designed for starter protection within UL frame 125 systems. This circuit breaker utilizes a TM120M trip unit, specifically configured for AM (Starter Protection) applications. It has a rated current (In) of 50A, making it suitable for protecting circuits with moderate current demands. Notably, this model does not incorporate overload protection, focusing solely on short-circuit protection. The short-circuit protection (Ii) is set to a range of 3 to 7 times the rated current (In), providing rapid response to fault conditions. This ensures quick disconnection of the circuit in the event of a short circuit, minimizing potential damage. The absence of connection terminals allows for flexible integration into various electrical systems, depending on specific installation requirements. It is ideal for applications where starter protection is paramount and overload protection is handled separately. This circuit breaker offers reliable and efficient short-circuit protection for motor starters. Siemens 3VA5 molded case circuit breakers are designed for system protection.