The THHQB2140 is a bolt-on miniature circuit breaker rated for 40A at 120/240V with 22kA interrupting capacity. Designed for residential and commercial panelboards, this 2-pole thermal-magnetic device features LI trip function and quick-make/quick-break mechanisms for reliable protection against overloads and short circuits. The compact unit incorporates visible trip indication and accepts 8-3 AWG copper/aluminum wiring, while its reverse feed capability and HACR rating ensure versatile application compatibility.
Features
- Electrical Specifications: 40A current rating • 120/240V voltage • 22kA interrupting capacity (120/240V) • LI (Long-time/Instantaneous) trip function
- Physical Design: Bolt-on mounting • Compact dimensions (2" W × 3.28" L × 2.38" H) • Load side lug terminals • Accepts 8-3 AWG copper/aluminum wiring
- Protection Features: Thermal-magnetic trip • Quick-make/quick-break mechanism • Visible trip indicator • Non-interchangeable trip
- Special Functions: Reverse feed capable • HACR rated (HVAC/R equipment) • Common trip bars
- Compliance: UL Listed • CSA Certified • NEC compliant
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