ABB / General Electric THHQL32030 Molded Case Circuit Breaker

Both are 1-inch wide per pole Q-Line plug-on breakers. The THHQL series features a higher interrupting rating of 22kAIC, whereas standard THQL breakers are rated at 10kAIC. They fit the same GE AQ Lighting Panels and PowerMark Gold Load Centers.

Yes. The THHQL32030 shares the exact physical dimensions and plug-on mounting style as the THQL32030, but provides a higher 22kAIC short-circuit rating. Upgrading to a higher interrupting rating is permitted and often required in commercial applications with high available fault current.

Yes. Following ABB's acquisition of GE Industrial Solutions, these breakers are manufactured to the same specifications. A THHQL32030 branded as ABB, GE, or ABB/GE is the exact same component and is fully interchangeable in listed load centers.

THHQL breakers are full-size devices measuring 1 inch wide per pole, requiring three full spaces. They will fit in standard GE Q-Line slots but cannot be installed in half-size spaces exclusively designed for 1/2-inch wide THQP slim breakers.

No. This is a standard thermal-magnetic breaker without ground fault (GFCI) or arc fault (AFCI) electronics. It does not require a neutral pigtail or neutral connection to operate properly.

In GE Q-Line nomenclature, the first 'TH' stands for thermal-magnetic. The second 'H' designates a high interrupting capacity of 22kAIC. Standard THQL breakers are rated at 10kAIC, while the THHQL series is built to safely interrupt up to 22,000 amps of fault current at 240VAC.

The LI designation indicates that the thermal-magnetic trip unit provides Long-Time protection against gradual overloads and Instantaneous protection against severe short circuits. Both trip settings are fixed on the THHQL32030.