ABB / General Electric THQL22100 Molded Case Circuit Breaker

Yes, it can be used as a back-fed main breaker in compatible GE PowerMark Gold and ABB ReliaHome load centers. When installed as a main breaker, a compatible hold-down retainer kit is required by the National Electrical Code to secure it to the bus bar.

The required torque depends on the wire size used. Torque the box lugs to 35 in-lb for 10 AWG, 40 in-lb for 8 AWG, 45 in-lb for 6 AWG to 4 AWG, and 50 in-lb for 3 AWG to 1/0 AWG conductors.

The primary difference is the short circuit interrupting rating. The THQL22100 is rated for 10kAIC at 240V, while the THHQL22100 is rated for 22kAIC for locations with higher available fault current. Both share the same 1-inch per pole plug-in form factor.

No. The THQL22100 is a full-size Q-Line breaker that occupies 2 inches of panel space (1 inch per pole). THQP breakers are half-inch per pole and utilize a different mounting clip configuration, meaning they are not direct physical replacements for THQL frames.

Yes, this breaker is UL listed as a Heating, Air Conditioning, and Refrigeration (HACR) type, meaning it is approved for use with HVAC equipment that requires this specific rating.

No, the THQL22100 features a plug-in connection type. If your panel requires a bolt-on connection, you will need to source a TQDL or THQB series breaker instead.