Square D PJA36120 – 1200A 3 Pole Molded Case Circuit Breaker Must Have

The PJA36120 is a 3-pole, 1200A molded case circuit breaker from Square D’s PowerPacT P-Frame family. Engineered for heavy-duty commercial power distribution, it features an electronic trip unit with fixed long-time and adjustable magnetic settings. This breaker installs into Square D I-Line panelboards and switchboards, utilizing an I-Line plug-on connection. It serves as a replacement for legacy MA36120 and MH36120 breakers. Rated at 65 kAIC at 480VAC, it includes true RMS sensing.