3VA5445-5EC31-1AA0 SIEMENS

The 3VA5445-5EC31-1AA0 is a robust 3VA5 UL frame circuit breaker from Siemens, designed for reliable circuit protection in industrial applications. This three-pole breaker features a breaking capacity class M, capable of interrupting fault currents up to 35kA at 480V, ensuring electrical system safety. It is equipped with a TM230 trip unit, specifically configured for line protection, enhancing its suitability for safeguarding distribution circuits. The breaker has a fixed thermal setting (FTAM) with a rated current (In) of 450A, providing consistent performance under normal operating conditions. Notably, this model does not include overload protection, focusing solely on short-circuit protection. The short-circuit protection (Ii) is adjustable from 5 to 10 times the rated current (In), allowing for customization based on specific application requirements. Compliant with UL489 standards and designated as SB (NAVAL), this circuit breaker is suitable for use in naval applications. It is designed to operate reliably in ambient temperatures up to 50 degrees Celsius. This model is supplied without connection terminals, providing flexibility in installation.