The Siemens 3VA4145-5ED14-3AA0 is a 1-pole circuit breaker from the 3VA4 series, built on a UL Frame 125. It is rated for line protection with a TM210 thermal-magnetic trip unit, FTFM (Fixed Thermal, Fixed Magnetic) settings: overload protection Ir is permanently set at 45 A, and short-circuit protection Ii is fixed at 10 × In (450 A). The breaking capacity is 35 kA at 277 V, placing it in the M (medium) breaking capacity class. This is the rating that governs fault interruption capability on a 277 V line — it will safely clear a fault up to 35 kA without upstream coordination issues.
Compliance and Documentation
RoHS compliant since 13-05-19. REACH Article 33 duty to inform applies: the part contains lead (CAS-No. 7439-92-1) above 0.1% w/w. Export control classifications are AL: N / ECCN: EAR99, meaning no special export licensing is required for most destinations.
Group and Product Codes
Group Code P360 and Product Group 5385 are the internal classification codes for this component line.