Circuit Breaker Accessories

Shop breaker trip units, rating plugs, shunt trips, auxiliary switches, undervoltage releases, closing coils, lugs, handles, mounting hardware, and related circuit-breaker accessories.

Accessories are frame- and series-specific. Send the breaker catalog number, frame, trip-unit label, control voltage, accessory function, and clear photos so Ampstate can verify compatibility before quoting.

Email sales@ampstate.com for technical matching and availability.

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Eaton Cutler-Hammer 927565 30A 3P 240V Circuit Breaker, Shunt Trip | AmpState

Regular price $2,761.00
Sale price $2,761.00 Regular price
Unit price
Meet the Eaton Cutler-Hammer 927565 — a purpose-built circuit breaker engineered for heavy-duty panelboards, load...

ABB ZEASM 500V Circuit Breaker, Shunt Trip | AmpState

Regular price $1,710.00
Sale price $1,710.00 Regular price
Unit price
Meet the ABB ZEASM 500V Circuit Breaker with Shunt Trip — a purpose-built protection solution...

Siemens Q34000S07 40A 3P 240V Circuit Breaker, Shunt Trip | AmpState

Regular price $1,310.00
Sale price $1,310.00 Regular price
Unit price
Siemens Q34000S07 is a robust 3-pole, 40A, 240V circuit breaker engineered for dependable overcurrent protection...

Westinghouse BR390ST 90A 3P 240V Circuit Breaker, Type BR, Shunt Trip | AmpState

Regular price $819.00
Sale price $819.00 Regular price
Unit price
The Westinghouse BR390ST is a rugged, high-capacity circuit breaker designed for dependable protection in panelboards,...

Eaton Cutler-Hammer CH240ST 40A 2P 240V Circuit Breaker, Plug-On, Shunt Trip | AmpState

Regular price $862.00
Sale price $862.00 Regular price
Unit price
The Eaton Cutler-Hammer CH240ST is a 2-pole, 40-amp, 240-volt circuit breaker engineered for reliable protection...

Siemens B3100HH00S01 100A 3P 240V Circuit Breaker, Bolt-On, Shunt Trip | AmpState

Regular price $1,673.00
Sale price $1,673.00 Regular price
Unit price
Built for everyday electrical work, the Siemens B3100HH00S01 is a 3-pole, 100 A, 240 V...

Siemens BQ3B09000S01 90A 3P 240V Circuit Breaker, Shunt Trip | AmpState

Regular price $1,554.00
Sale price $1,554.00 Regular price
Unit price
Meet the Siemens BQ3B09000S01—a 90 A, 3-pole, 240 V circuit breaker with an integrated shunt...

Siemens BQ3B10000S01 100A 3P 240V Circuit Breaker, Shunt Trip | AmpState

Regular price $1,758.00
Sale price $1,758.00 Regular price
Unit price
Meet the Siemens BQ3B10000S01, a purpose-built 100A, 3-pole circuit breaker with integrated shunt-trip designed for...

GE THQB21100ST1 100A 2P 240V Circuit Breaker, Bolt-On, Shunt Trip | AmpState

Regular price $787.00
Sale price $787.00 Regular price
Unit price
GE THQB21100ST1 is a 100A, 2-pole, 240V bolt-on circuit breaker with a built-in shunt trip,...

GE THQB32020ST1 20A 3P 240V Circuit Breaker, Bolt-On, Shunt Trip | AmpState

Regular price $786.00
Sale price $786.00 Regular price
Unit price
GE THQB32020ST1 is a 20A, 3-pole, 240V circuit breaker designed for dependable protection in panelboards,...

GE THQB32040ST1 40A 3P 240V Circuit Breaker, Bolt-On, Shunt Trip | AmpState

Regular price $1,233.00
Sale price $1,233.00 Regular price
Unit price
Meet the GE THQB32040ST1 — a purpose-built circuit breaker designed to deliver reliable protection in...

GE THQB32070ST1 70A 3P 240V Circuit Breaker, Bolt-On, Shunt Trip | AmpState

Regular price $1,261.00
Sale price $1,261.00 Regular price
Unit price
Meet the GE THQB32070ST1—a rugged 70 A, three‑pole circuit breaker engineered for everyday electrical distribution....
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