3VA5145-5ED31-0AA0 SIEMENS

The 3VA5145-5ED31-0AA0 is a UL-listed molded case circuit breaker from Siemens, designed for reliable circuit protection in various applications. This 3-pole circuit breaker falls under the 3VA5 frame series, specifically size 125, indicating its physical dimensions and current carrying capacity. It boasts a breaking capacity class M, capable of interrupting fault currents up to 35kA at 480V, ensuring robust protection against overcurrents and short circuits. Equipped with a TM210 trip unit, this breaker is configured for line protection, safeguarding electrical distribution systems. The FTFM functionality (likely referring to Fixed Thermal Fixed Magnetic trip unit settings) provides preset overload and short-circuit protection characteristics. The rated current (In) is 45A, meaning it's designed to continuously carry this amount of current without tripping under normal operating conditions. Overload protection (Ir) is fixed at 45A, providing protection against sustained overcurrents. Short-circuit protection (Ii) is set at 10 times the rated current (10 x In), offering instantaneous tripping in the event of a high-magnitude short circuit. This model is designed without connection terminals, allowing for flexible connection methods based on specific installation requirements.