3VA5111-4ED21-1AA0 SIEMENS

The 3VA5111-4ED21-1AA0 is a robust and reliable molded case circuit breaker (MCCB) from Siemens' 3VA5 UL series, designed for optimal circuit protection in various applications. This particular model features a frame size of 125A and a breaking capacity class S, capable of interrupting fault currents up to 25kA at 480V, ensuring electrical system safety. It is a 2-pole circuit breaker specifically configured for line protection, safeguarding against overloads and short circuits. The breaker incorporates a TM210 trip unit, offering fixed thermal-magnetic protection characteristics. Its rated current (In) is 110A, with overload protection (Ir) set at 110A, providing consistent and dependable performance. The short-circuit protection (Ii) is fixed at 10 times the rated current (10 x In), enabling rapid response to high-level fault currents. Compliant with UL 489 standards and suitable for SB (naval) applications, this circuit breaker is designed to operate reliably in ambient temperatures up to 50 degrees Celsius. Note that this model is supplied without connection terminals, allowing for flexible installation options based on specific application requirements.