Square D Circuit Breakers
Square D, now part of Schneider Electric, has been a trusted name in electrical distribution equipment for over a century. Their circuit breaker lines include the legendary Masterpact, PowerPact, and QO series. Group CBS provides comprehensive support for all Square D products, including legacy and obsolete models.
Low (< 1kV) Circuit Breakers
Square D Masterpact
800A - 6300ASquare D Masterpact air circuit breakers represent the premium tier of low voltage power distribution. The NW and NT series deliver exceptional performance with advanced Micrologic trip units and comprehensive communication options.
Availability
Available for immediate shipment
Applications
Services Available
Square D PowerPact
15A - 2500ASquare D PowerPact molded case circuit breakers deliver reliable protection across a wide range of applications. Available in H, J, L, and P frames with various trip unit configurations.
Availability
Available as new or refurbished
Applications
Services Available
Square D DS
800A - 4000AThe Square D DS series air circuit breakers served critical power distribution needs for decades. While superseded by newer designs, many remain in service. Group CBS provides complete support including parts, refurbishment, and replacement options.
Availability
Available through refurbishment and obsolete sourcing programs
Applications
Services Available
Square D QO
15A - 200ASquare D QO breakers are the gold standard for residential and light commercial circuit protection. Known for reliability and quality, QO breakers are found in millions of load centers nationwide.
Availability
Available for immediate shipment
Applications
Services Available
Support & Lifecycle Services for Square D
Group CBS provides complete lifecycle support for all Square D circuit breakers, from testing and certification to refurbishment and replacement.
Need a Square D Circuit Breaker?
Whether you need a specific part number, replacement recommendations, or service support, our team is ready to help.