Siemens B390 – 90A 3 Pole Miniature Circuit Breaker Direct From Factory

Built for reliable power distribution, the Siemens B390 is a 3-pole, 90A miniature circuit breaker. It operates at 240VAC and utilizes thermal-magnetic trip technology to protect commercial branch circuits from overloads and short circuits. This Type BL breaker features a bolt-on mounting style for secure installation into Siemens P1, P2, and P3 panelboards. It includes load-side lugs that accommodate up to 1/0 AWG conductors. Delivering a 10kAIC rating, the unit is HACR certified.