3VA5145-4ED11-1AA0 SIEMENS

The 3VA5145-4ED11-1AA0 is a robust 1-pole circuit breaker from Siemens, designed for reliable line protection in various electrical systems. This UL 489 certified breaker falls under frame size 125 and boasts a breaking capacity class S, capable of interrupting fault currents up to 25kA at 277V. Equipped with a TM210 trip unit, it offers fixed thermal-magnetic (FTFM) protection characteristics. The breaker's rated current (In) is 45A, with overload protection (Ir) fixed at 45A to prevent sustained overcurrent conditions. Short-circuit protection (Ii) is set at 10 times the rated current (10 x In), ensuring rapid response to high-level fault currents. This model is specifically designed and approved for shipboard (naval) applications (SB), making it suitable for marine environments. It is rated for operation up to 50 degrees Celsius without derating, ensuring reliable performance in demanding conditions. The breaker is supplied without connection terminals, allowing for flexible connection options based on specific application requirements. This circuit breaker provides dependable protection for electrical circuits against overloads and short circuits.