3VA5145-4EC31-1AA0 SIEMENS

The 3VA5145-4EC31-1AA0 is a robust 3-pole circuit breaker from Siemens, designed for reliable line protection in various electrical systems. It falls under the 3VA5 UL frame 125, indicating its physical dimensions and compatibility with corresponding enclosures and mounting systems. This circuit breaker boasts a breaking capacity class S, capable of interrupting fault currents up to 25kA at 480V, ensuring safety and preventing damage to connected equipment. Equipped with a TM230 trip unit, it offers comprehensive protection features, including overload protection set at Ir=45A and fixed short-circuit protection at Ii=5...10 x In. The rated current (In) of the breaker is 45A, making it suitable for applications with moderate current demands. Compliant with UL 489 standards and SB (naval) requirements, this circuit breaker is suitable for use in demanding environments. It is designed to operate reliably at 50 degrees Celsius without requiring connection hardware. The FTAM functionality enhances its integration into modern communication and monitoring systems. This circuit breaker provides a dependable solution for safeguarding electrical circuits against overloads and short circuits.