Bolt-On Circuit Breakers

Shop bolt-on circuit breakers for commercial and industrial panelboards from Eaton, Cutler-Hammer, Siemens, ITE, Square D, Schneider Electric, GE, Federal Pioneer, Federal Pacific, and other current or legacy series.

Panelboard breakers must match the approved panel and bus design. Verify the exact catalog number, series, poles, amperage, voltage, kAIC, mounting hardware, rejection features, wire range, and panel label before installation.

Email sales@ampstate.com with the breaker label and panel schedule for replacement identification. View all circuit breakers.

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Square D QOU370 - 70 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU370 - 70 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Meet the Square D QOU370—a 70A, 240V, 3-pole bolt-on molded case circuit breaker designed to...
Square D QOU360 - 60 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU360 - 60 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Meet dependable branch circuit protection with the Square D QOU360, a 60A, 240V, 3-pole bolt-on...
Square D QOU350 - 50 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU350 - 50 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
The Square D QOU350 is a dependable 50A, 240V, 3-pole bolt-on molded case circuit breaker...
Square D QOU345 - 45 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU345 - 45 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Square D QOU345 is a 45A, 240V, 3-pole bolt-on molded case circuit breaker engineered for...
Square D QOU340 - 40 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU340 - 40 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Square D QOU340 is a 40 A, 240 V, 3-pole bolt-on molded case circuit breaker...
Square D QOU335 - 35 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU335 - 35 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
The Square D QOU335 is a 35A, 240V, 3-pole bolt-on molded case circuit breaker designed...
Square D QOU330 - 30 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU330 - 30 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Overview The Square D QOU330 is a purpose-built 3-pole, 30 A, 240 V bolt-on molded...
Square D QOU325 - 25 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU325 - 25 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
The Square D QOU325 is a purpose-built 25A, 240V, 3-pole bolt-on molded case circuit breaker...
Square D QOU320 - 20 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU320 - 20 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Designed for dependable protection in electrical distribution, the Square D QOU320 is a 20A, 240V,...
Square D QOU315 - 15 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU315 - 15 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Square D QOU315 is a 15A, 240V, three-pole bolt-on molded case circuit breaker built to...
Square D QOU3100 - 100 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU3100 - 100 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Introducing the Square D QOU3100 — a 100 A, 240 V, 3-pole bolt-on molded case...
Square D QOU310 - 10 A 240 V 3-Pole Bolt-On Circuit Breaker | AmpState - Circuit Breakers

Square D QOU310 - 10 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Meet the Square D QOU310 — a dependable bolt-on molded-case circuit breaker designed for branch...
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