ABB / General Electric THQL31WY15 Miniature Circuit Breaker

This breaker is compatible with GE Q-Line load centers and GE A-Series panelboards. It uses a 1-inch per pole plug-in design that snaps directly onto the busbar.

The box lugs are rated for both copper and aluminum conductors. They accept 14 to 8 AWG copper wire or 12 to 8 AWG aluminum wire.

ABB acquired GE Industrial Solutions in 2018. Depending on the production batch, this exact part number may be labeled as either GE or ABB. The physical dimensions, specifications, and panel compatibility remain identical regardless of the logo.

Yes, this specific model is a switching neutral circuit breaker. It is designed to simultaneously disconnect the neutral conductor along with the ungrounded conductors, which is required for certain specialized applications.

The breaker uses a fixed thermal-magnetic trip unit with Long-Time and Instantaneous (LI) functions. The thermal element responds to prolonged overloads, while the magnetic element trips instantly during severe short circuits.

No, the THQL31WY15 is a plug-in breaker. If your panel requires a bolt-on connection, you will need a THQB series breaker instead of this THQL model.

Yes, it includes an internal common trip bar. If an overload or short circuit occurs on any single pole, the mechanism will simultaneously trip all three poles to ensure complete circuit disconnection.