Shop Now Siemens LGB2B045B – 45A 2 Pole Molded Case Circuit Breaker

Part of the Sentron series, the Siemens LGB2B045B is a 2-pole, 45A molded case circuit breaker engineered for commercial power distribution. It features a fixed thermal-magnetic trip unit for reliable LI protection. This bolt-on MCCB installs into Siemens P1, P2, and P3 panelboards. For upgrades, it is replaced by the 3VA4145-6ED24-0AA0 (mounting kit required). Rated for 100kAIC at 240V and 65kAIC at 480Y/277V, this HACR-rated breaker includes load-side lugs for reverse feed applications.