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 - QO3401021
Regular price $478.38 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 40A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO340
Regular price $183.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 35A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO335
Regular price $215.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 30A, 3 Pole, 120/240V AC, 22kA at 120/240V AC - QO330VH
Regular price $351.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 30A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO3301021
Regular price $447.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 30A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO330
Regular price $185.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 25A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO325
Regular price $185.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 3 Pole, 120/240V AC, 22kA at 120/240V AC - QO320VH
Regular price $356.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 3 Pole, 240V AC, 10kA at 240V AC - QO320HID
Regular price $627.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO3201021
Regular price $447.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 3 Pole, 208/120V AC, 10kA at 208/120V AC, A Curve - QO320GFI
Regular price $796.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 20A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO320
Regular price $185.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 15A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO315
Regular price $185.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 100A, 3 Pole, 120/240V AC, 22kA at 120/240V AC - QO3100VH
Regular price $447.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 100A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO3100
Regular price $265.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 100A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO31001021
Regular price $630.38 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 10A, 3 Pole, 120/240V AC, 10kA at 120/240V AC - QO310
Regular price $185.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 90A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QO290
Regular price $203.18 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 80A, 2 Pole, 120/240V AC, 22kA at 120/240V AC - QO280VH
Regular price $268.78 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 80A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QO280CP
Regular price $177.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 80A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QO280
Regular price $209.58 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 70A, 2 Pole, 120/240V AC, 22kA at 120/240V AC - QO270VH
Regular price $183.98 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 70A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QO270CP
Regular price $137.90 USDRegular priceUnit price per -
Miniature Circuit Breaker, QO Series, 70A, 2 Pole, 120/240V AC, 10kA at 120/240V AC - QO270
Regular price $150.70 USDRegular priceUnit price per
