Siemens 3VA4130-5ED34-0AA0 U Motor Protection Switch

Siemens 3VA4130-5ED34-0AA0 U Motor Protection Switch is a three-pole molded-case circuit breaker from the 3VA4 family (UL Frame 125) engineered to protect motor circuits with integrated overload and short-circuit protection. Rated for 30 A nominal current (In=30 A) and 600 V AC, it delivers a short-circuit breaking capacity of 35 kA at 480 V, making it suitable for protecting motors in industrial equipment and control panels where compact, code-compliant protection is required. The unit uses a thermal-magnetic trip mechanism (TM210) with overload protection permanently set at 30 A (Ir=30 A) and a short-circuit trip setting of Ii=10×In, ensuring fast disconnection on faults while minimizing nuisance trips. As a motor protection switch, it guards three-phase motors by coordinating overload and fault protection in a single device, simplifying panel wiring and maintenance. This model is one of Siemens' widely applied 3VA4 configurations, designed for reliable operation in industrial environments where space and protection performance matter.