Plug-In Circuit Breakers

Shop plug-in circuit breakers for residential, commercial, and light-industrial panelboards, including standard, tandem, quad, AFCI, GFCI, and equipment-protection configurations.

Plug-in breakers are panel-specific. Confirm the manufacturer, panel series, exact catalog number, poles, amperage, voltage, interrupting rating, terminal arrangement, and panel label before choosing a replacement.

Send label photos to sales@ampstate.com for technical matching. View all circuit breakers.

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Square D NBGF215 - 15 A 240 V 2-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D NBGF215 - 15 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

Regular price $850.00
Sale price $850.00 Regular price
Unit price
Powerful protection for your panelboard with the Square D NBGF215 15A, 240V, 2-Pole Plug-In Circuit...
Square D QO390 - 90 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO390 - 90 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
When you need dependable protection for 240V circuits, the Square D QO390 delivers precisely what...
Square D QO380 - 80 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO380 - 80 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Meet the Square D QO380 — a dependable 80 A, 240 V, 3-pole plug-in molded...
Square D QO370 - 70 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO370 - 70 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Meet the Square D QO370 — a 70 A, 240 V, 3-pole plug-in molded case...
Square D QO360 - 60 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO360 - 60 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Meet the Square D QO360—a 60A, 240V, 3-pole plug-in molded case circuit breaker designed to...
Square D QO350VH - 50 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO350VH - 50 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Meet the Square D QO350VH—a reliable, plug-in 50A 240V 3-pole molded case circuit breaker designed...
Square D QO350GFI - 50 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO350GFI - 50 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Square D QO350GFI is a 50‑amp, 240‑volt, 3‑pole plug‑in molded‑case circuit breaker with built‑in ground...
Square D QO350EPD - 50 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO350EPD - 50 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Square D QO350EPD: 50A 240V 3-Pole Plug-In Circuit Breaker Experience robust branch-circuit protection for panelboards...
Square D QO350 - 50 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO350 - 50 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
The Square D QO350 is a 50A, 240V, 3-pole plug-in molded‑case circuit breaker designed to...
Square D QO345 - 45 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO345 - 45 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Meet the Square D QO345 — a 45A, 240V, 3-pole plug-in molded case circuit breaker...
Square D QO340VH - 40 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO340VH - 40 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Square D QO340VH is a 40A, 240V, 3-pole plug-in molded case circuit breaker designed to...
Square D QO340GFI - 40 A 240 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D QO340GFI - 40 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Introducing the Square D QO340GFI — a 40A, 240V, 3-pole plug-in molded case circuit breaker...
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