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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Siemens Q33000S01 30A 3P Circuit Breaker, Shunt Trip | AmpState

Regular price $767.00
Sale price $767.00 Regular price
Unit price
The Siemens Q33000S01 30A 3P Shunt Trip Circuit Breaker is engineered to deliver dependable, remote-controlled...

Siemens Q35000S01 50A 3P 240V Circuit Breaker, Plug-On, Shunt Trip | AmpState

Regular price $790.00
Sale price $790.00 Regular price
Unit price
Meet the Siemens Q35000S01 50A 3P 240V circuit breaker—built to protect your electrical distribution with...

GE THQL32040ST1 40A 3P 240V Circuit Breaker, Plug-On, Shunt Trip | AmpState

Regular price $1,153.00
Sale price $1,153.00 Regular price
Unit price
GE THQL32040ST1 is a 40 A, 3-pole, 240 V circuit breaker engineered for dependable protection...

Siemens Q28000S01 800A 2P 240V Circuit Breaker, Shunt Trip | AmpState

Regular price $737.00
Sale price $737.00 Regular price
Unit price
Siemens Q28000S01 800A 2P 240V Circuit Breaker with Shunt Trip, now available from AmpState, is...

Square D QOB3701021 70A 3P 240V Circuit Breaker, Bolt-On, Shunt Trip | AmpState

Regular price $1,793.00
Sale price $1,793.00 Regular price
Unit price
Introducing the Square D QOB3701021 - a dependable 70 A, 3-pole, 240 V bolt-on circuit...

GE THQB32080ST1 80A 3P 240V Circuit Breaker, Bolt-On, Shunt Trip | AmpState

Regular price $1,229.00
Sale price $1,229.00 Regular price
Unit price
Meet the GE THQB32080ST1 — an 80A, 3-pole, 240V circuit breaker engineered for robust protection...

GE THQL2120ST1 20A 2P 240V Circuit Breaker, Shunt Trip | AmpState

Regular price $608.00
Sale price $608.00 Regular price
Unit price
The GE THQL2120ST1 is a purpose-built, two-pole 20A circuit breaker with a shunt trip, designed...

Siemens Q38000S01 80A 3P 240V Circuit Breaker, Plug-On, Shunt Trip | AmpState

Regular price $947.00
Sale price $947.00 Regular price
Unit price
The Siemens Q38000S01 80A 3P 240V Circuit Breaker with Plug-On Shunt Trip is engineered for...

Eaton Cutler-Hammer CH350ST 50A 3P 240V Circuit Breaker, Type CH, Shunt Trip | AmpState

Regular price $1,365.00
Sale price $1,365.00 Regular price
Unit price
Eaton Cutler-Hammer CH350ST is a rugged, remote-trip capable circuit breaker built for dependable protection in...

Siemens B32000S01 20A 3P 240V Circuit Breaker, Shunt Trip | AmpState

Regular price $712.00
Sale price $712.00 Regular price
Unit price
The Siemens B32000S01 is a dependable 3-pole circuit breaker built to protect circuits in panelboards,...

Siemens B38000S01 80A 3P 240V Circuit Breaker, Bolt-On, Shunt Trip | AmpState

Regular price $853.00
Sale price $853.00 Regular price
Unit price
The Siemens B38000S01 is a three-pole, 80 A circuit breaker engineered for dependable protection in...

GE THQB2140ST1 40A 2P Circuit Breaker, Shunt Trip | AmpState

Regular price $10.00
Sale price $10.00 Regular price
Unit price
The GE THQB2140ST1 is a robust 2‑pole circuit breaker rated at 40 A with an...
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