ABB / General Electric THHQB32100 Miniature Circuit Breaker

This bolt-on breaker is designed for installation in GE A-Series, GE AQ, and ABB ReliaGear panelboards. It is not compatible with standard residential load centers, which require plug-on variants.

The primary difference is the short circuit interrupting capacity. The THHQB32100 is the high-interrupting version, providing a 22kAIC rating at 240VAC. The standard THQB32100 provides a 10kAIC rating. Both share the same physical footprint and bolt-on mounting style.

No. The THHQB32100 features a bolt-on connection designed for commercial and industrial panelboards. Standard GE residential load centers require plug-on breakers, such as models in the THQL or THHQL series.

Yes. Following ABB's acquisition of GE Industrial Solutions, Q-Line breakers previously branded as General Electric are now produced by ABB. They share identical specifications and agency approvals, making them fully interchangeable.

The LI designation indicates standard thermal-magnetic protection. The Long-Time (L) element provides thermal protection against sustained overcurrents. The Instantaneous (I) element provides magnetic protection to clear severe short circuits immediately. Both settings are fixed on this specific frame.

Yes, a THHQB breaker will physically fit in the same panelboard space as a standard THQB breaker while providing a higher interrupting rating. However, never replace a THHQB with a THQB if the system fault current requires the 22kAIC rating.