Square D miniature circuit breakers (MCBs), manufactured by Schneider Electric, provide reliable overcurrent and short-circuit protection for residential, commercial, and industrial electrical systems. Designed to automatically interrupt power during electrical faults, Square D MCBs help protect wiring, equipment, and connected devices while ensuring safe and dependable operation. Available in a variety of amperage ratings, pole configurations, and trip characteristics, Square D miniature circuit breakers are ideal for panelboards, control panels, machinery, and power distribution systems where compact, high-performance circuit protection is essential.
Square D Miniature Circuit Breakers
Square D miniature circuit breakers (MCBs), manufactured by Schneider Electric, provide reliable overcurrent and short-circuit protection for residential, commercial, and industrial electrical systems. Designed to automatically interrupt power during electrical faults, Square D MCBs help protect wiring, equipment, and connected devices while ensuring safe and dependable operation. Available in a variety of amperage ratings, pole configurations, and trip characteristics, Square D miniature circuit breakers are ideal for panelboards, control panels, machinery, and power distribution systems where compact, high-performance circuit protection is essential.
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Miniature Circuit Breaker 120/240V 40A | Square D QOB140VH - QOB140VH
Regular price $178.30 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 30A, 1 Pole, 120V AC, 10kA at 120V AC, A Curve - QOB130GFI
Regular price $363.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 30A, 1 Pole, 120V AC, 10kA at 120V AC, B Curve - QOB130EPD
Regular price $684.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 25A, 1 Pole, 120/240V AC, 22kA at 120/240V AC - QOB125VH
Regular price $132.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 1 Pole, 120/240V AC, 22kA at 120/240V AC - QOB120VH
Regular price $132.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC, A Curve - QOB120GFI
Regular price $363.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC, B Curve - QOB120EPD
Regular price $684.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, HOMELINE Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC - QOB120CAFI
Regular price $295.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, HOMELINE Series, 20A, 1 Pole, 120V AC, 10kA at 120V AC - QOB120AFI
Regular price $222.38 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 1 Pole, 120/240V AC, 10kA at 120/240V AC - QOB1201021
Regular price $382.38 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 15A, 1 Pole, 120V AC, 10kA at 120V AC, A Curve - QOB115GFI
Regular price $363.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 80A, 3 Pole, 120/240V AC, 22kA at 120/240V AC - QO380VH
Regular price $412.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 90A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO390
Regular price $273.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 80A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO380
Regular price $273.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 70A, 3 Pole, 120/240V AC, 22kA at 120/240V AC - QO370VH
Regular price $363.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 70A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO3701021
Regular price $571.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 70A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO370
Regular price $236.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 60A, 3 Pole, 120/240V AC, 22kA at 120/240V AC - QO360VH
Regular price $284.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 60A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO3601021
Regular price $457.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 50A, 3 Pole, 120/240V AC, 22kA at 120/240V AC - QO350VH
Regular price $486.38 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 50A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO350
Regular price $185.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 50A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO3501021
Regular price $593.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 45A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO345
Regular price $172.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 40A, 3 Pole, 120/240V AC, 22kA at 120/240V AC - QO340VH
Regular price $316.78 USDRegular priceUnit price per
