Professional Grade Siemens / ITE CP3B120 – 1200A 3 Pole Molded Case Circuit Breaker

Engineered for heavy power distribution, the Siemens MP3B120 is a 3-pole, 1200A molded case circuit breaker. It handles the demands of commercial switchboards and panelboards. This legacy unit-mount breaker provides an exact match for older installations, restoring functionality without retrofits. The CPD63B120 is the designated replacement. Utilizing a thermal-magnetic trip, it offers precise LI protection. With 100kAIC and current-limiting features, it aggressively minimizes fault damage.