Square D MX36800G 3-Pole 800 Amp Molded Case Circuit Breaker

NEW:

Breaker is brand new in box and ships with original manufacturer packaging. It has never been installed or energized. In most cases, the packaging is unopened.

USED:

Breaker has been previously energized and/or installed and is reconditioned and tested by our certified technicians before shipping. All used breakers meet original OEM standards.

All breakers come with a minimum one-year replacement warranty, with some new items carrying multi-year factory-backed warranties.

Square D circuit breakers, manufactured by Schneider Electric, are among the most recognizable and widely installed breakers in North America. Electrical contractors encounter Square D equipment across virtually every type of facility—from residential homes and small commercial buildings to large industrial plants and mission-critical infrastructure. Well-known product families include PowerPact molded case breakers, Masterpact air circuit breakers, and the widely used QO and Homeline residential breaker lines found in millions of load centers.

In commercial and industrial installations, Square D breakers are commonly used in panelboards, switchboards, and switchgear systems designed around the company’s extensive distribution product ecosystem. Popular molded case frames such as FA, FH, KA, and LA breakers have been industry standards for decades, and many remain in service today. The longevity of Square D equipment means replacement breakers are frequently required to maintain or expand existing electrical systems.