ABB / General Electric THQL1140 Miniature Circuit Breaker

THQL breakers, like the THQL1140, are standard full-size breakers that measure 1 inch wide per pole and fit into any standard Q-Line slot. THQP breakers are half-size or slimline breakers measuring 1/2 inch wide per pole, and they only fit into specific panel slots designed for tandem breakers.

Yes. ABB acquired GE Industrial Solutions in 2018, and the THQL1140 is fully compatible with ABB ReliaHome load centers, as well as legacy GE Q-Line and PowerMark Gold panels.

The required torque depends on the wire size used. For 8 AWG wire, torque to 40 in-lbs. For 6 to 4 AWG wire, torque to 45 in-lbs. For 3 AWG wire, torque to 50 in-lbs.

Yes, the box lugs on this breaker are rated for both copper (Cu) and aluminum (Al) conductors ranging from 8 AWG to 3 AWG.

Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires this specific safety designation.

ABB acquired GE Industrial Solutions, which originally manufactured the Q-Line series. The THQL1140 is the exact same product, now manufactured under the ABB umbrella, and retains full UL listing for GE panels.

No, the THQL1140 is a standard thermal-magnetic circuit breaker providing overload and short-circuit protection. It does not include Ground Fault Circuit Interrupter (GFCI) or Arc Fault Circuit Interrupter (AFCI) functionality.

The LI designation indicates that the breaker features a thermal-magnetic trip unit with Long-Time (thermal) protection for overloads and Instantaneous (magnetic) protection for short circuits.

The THQL1140 is a plug-on circuit breaker. It snaps directly onto the busbar of compatible GE and ABB load centers without the need for bolt-on hardware.