Square D MJA36800 – 800A 3 Pole Molded Case Circuit Breaker While Supplies Last

Engineered for commercial and industrial power distribution, the MJA36800 is a 3-pole, 800A molded case circuit breaker from Square D’s PowerPacT M-Frame family. It installs into I-Line panelboards and switchboards, serving as a seamless modern replacement for legacy MA and MH frame breakers. Rated for 65 kAIC at 480VAC, this unit utilizes an advanced electronic trip system with fixed thermal and adjustable magnetic settings to ensure precise coordination and reliable system protection.