ABB / General Electric THQB2160 Molded Case Circuit Breaker

This bolt-on miniature circuit breaker is designed specifically for ABB and legacy General Electric A-Series panelboards, as well as GE AQ lighting panels. It will not fit in standard residential load centers.

No. While both are 60A Q-Line breakers, the THQB2160 has a bolt-on connection for commercial panelboards. The THQL2160 is a plug-on breaker for standard load centers. Their mounting styles are not interchangeable.

The Q-Line THQB frame has a 1-inch width per pole. As a 2-pole breaker, it requires 2 inches of panel space, occupying two adjacent bus slots in the panelboard.

Torque specifications for the box lugs vary by wire gauge. For #8 AWG wire, torque to 40 in-lb. For #6 to #4 AWG, use 45 in-lb. For #3 AWG conductors, apply 50 in-lb of torque.

Yes, the THQB series is HACR rated. It is fully certified for use with heating, air conditioning, and refrigeration equipment, safely handling the inrush currents typical of motor loads.

Yes. If the system requires a fault current rating higher than the 10kAIC provided by this model, the direct bolt-on upgrade is the THHQB2160. It provides a 22kAIC rating at 120/240VAC while maintaining the same physical footprint.

Yes. ABB acquired GE Industrial Solutions in 2018. ABB THQB breakers are manufactured to the exact same specifications and are direct, UL listed replacements for legacy GE branded units.

Yes. It features an internal common trip mechanism. A fault on either the long-time or instantaneous trip curve for a single pole will trip both poles simultaneously, safely isolating the entire 240V circuit.