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, QO Series, 40A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QOU340B
Regular price $380.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 30A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QOU330B
Regular price $366.38 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 3 Pole, 120/240V AC, 22kA at 120/240V AC - QOU320VH
Regular price $529.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QOU320B
Regular price $348.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 3 Pole, 240V AC, 10kA at 120/240V AC - QOU3205283
Regular price $475.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 15A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QOU315B
Regular price $355.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 15A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QOU3151021
Regular price $611.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 15A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QOU3155283
Regular price $475.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 100A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QOU31001021
Regular price $843.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 90A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU290
Regular price $351.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 60A, 3 Pole, 240V AC, 10kA at 240V AC - QOU300
Regular price $391.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 60A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU260B
Regular price $117.74 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 70A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU270B
Regular price $238.38 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 50A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU250B
Regular price $113.84 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 50A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU2501021
Regular price $351.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 45A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU245B
Regular price $120.56 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 40A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU240B
Regular price $108.24 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 40A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU2401042
Regular price $323.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 30A, 2 Pole, 240V AC, 10kA at 240V AC - QOU230H
Regular price $219.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 30A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU230B
Regular price $113.84 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU225B
Regular price $107.12 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QOU220B
Regular price $113.10 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 2 Pole, 240V AC, 10kA at 240V AC - QOU220H
Regular price $204.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 15A, 2 Pole, 120/240V AC, 22kA at 120/240V AC - QOU215VH5283
Regular price $313.58 USDRegular priceUnit price per
