The THHQB1120 is a bolt-on miniature circuit breaker rated for 20A at 120/240V with 22kA interrupting capacity. Designed for residential and commercial panelboards, this single-pole thermal-magnetic device features LI trip function and quick-make/quick-break mechanisms for reliable protection against overloads and short circuits. Its compact design (1" W × 2-3/8" D × 3-9/32" H) incorporates visible trip indication and accepts 8-14 AWG copper wiring. Certified for HACR and SWD applications, the breaker supports reverse feed operation and complies with UL/CSA safety standards.
Features
- Electrical Specifications: 20A current rating • 120/240V voltage • 22kA interrupting capacity • 50/60 Hz frequency • Accepts 8-14 AWG copper/12-8 AWG aluminum wire
- Physical Design: Bolt-on mounting • Compact dimensions (1" W × 2-3/8" D × 3-9/32" H) • Toggle actuator • Screw clamp terminals
- Protection Features: Thermal-magnetic trip • LI (Long-time/Instantaneous) function • Non-interchangeable trip • Quick-make/quick-break mechanism • Visible trip indicator
- Special Functions: Reverse feed capable • HACR rated (HVAC/R equipment) • SWD rated (fluorescent lighting switching)
- Compliance: UL Listed • CSA Certified • NEC compliant • For use with GE AQ series panelboards
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