GE THQB2120ST1 20A 2P 240V Circuit Breaker, Shunt Trip | AmpState

Meet the GE THQB2120ST1, a 20 A, 2-pole, 240 V circuit breaker equipped with a shunt trip for enhanced safety and remote control. Built for circuit protection in panelboards, load centers, and electrical distribution networks, this device ensures reliable, fast isolation when protection is required.

Designed for professionals who demand precise part-number matching, THQB2120ST1 is a smart choice for maintenance teams, panel builders, and spare inventory. The shunt trip supports remote triggering to disconnect power quickly in response to an external control signal, enabling safer operation of equipment and easier compliance with safety protocols.

Why this breaker stands out

• Shunt Trip capability: enables rapid remote disconnection for emergency shutdowns or safety interlocks, reducing risk during faults or maintenance.
• Exact electrical ratings: 20 A, 2 poles, 240 V rating align with common GE panelboards and distribution circuits, ensuring dependable performance in standard configurations.
• Direct part-number match: simplifies procurement and reduces the guesswork during panel upgrades, replacements, or stocking.
• AmpState availability: easy to source from AmpState, with assistance to confirm compatibility and fit when ordering.

Ideal use cases and practical guidance

Who should consider this breaker? installation professionals and maintenance crews who need a reserved, identifiable GE part for ongoing service, panel upgrades, or spare inventory. It's especially valuable in environments where remote safety interlock capability is beneficial—think facilities with remote monitoring or centralized control systems that require an external signal to trip the circuit.

Use cases include:

• Replacing a failed or obsolete 2P 240V breaker in panelboards or load centers with a known, compatible GE part.
• Stocking spare THQB-series breakers to minimize downtime during routine maintenance or fault repair.
• Integrating with control systems that trigger remote trips for safety or process control reasons.

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.