ABB / General Electric THHQL32020 Miniature Circuit Breaker

No. The THHQL32020 is a 3-pole circuit breaker designed exclusively for 3-phase systems. It will not fit or function correctly in a standard single-phase residential panel.

The primary difference is the interrupting capacity. Standard THQL breakers are rated for 10kAIC, while THHQL breakers feature a higher interrupting rating of 22kAIC for applications with higher available fault currents. Both share the same 1-inch per pole physical dimensions.

Yes. ABB acquired GE Industrial Solutions, so these breakers are identical in design, fit, and function. Depending on the manufacturing date, the breaker may be branded as GE, ABB, or both.

Yes. Because they share the same physical footprint and plug-in mounting style, the THHQL32020 can directly replace a THQL32020. This provides an upgraded 22kAIC rating while maintaining full panel compatibility.

Yes. This breaker is HACR rated, meaning it is tested and approved for use with heating, air conditioning, and refrigeration equipment that requires this specific overcurrent protection.

This 3-pole plug-in breaker is compatible with 3-phase GE PowerMark Gold Load Centers, GE A-Series Panelboards, and 3-phase ABB ReliaHome Load Centers. Always verify your panel's label to ensure THHQL breakers are permitted.

No. Even if the breaker physically fits, installing a GE Q-Line breaker in a panel not explicitly listed for it voids the UL listing and creates a serious safety hazard. Only use this breaker in approved GE or ABB enclosures.