ABB / General Electric THQL32050 Miniature Circuit Breaker

This plug-on breaker is designed for use in GE PowerMark Gold load centers and GE A-Series panelboards. Following ABB's acquisition of GE Industrial Solutions, it is also compatible with ABB ReliaGear RQ lighting panels configured for Q-Line plug-in breakers.

The THQL series uses a standard 1-inch width per pole. This 3-pole device requires three adjacent 1-inch spaces, taking up 3 inches of total bus space in your panel.

Yes, this breaker is HACR rated. It is approved for use with heating, air conditioning, and refrigeration equipment that requires HACR-certified overcurrent protection.

Both are 50-amp, 3-pole Q-Line breakers with identical electrical ratings, but they have different connection types. The THQL32050 is a plug-in breaker for load centers, while the THQB32050 is a bolt-on breaker intended for commercial lighting panelboards.

Yes. This standard thermal-magnetic Q-Line breaker does not have line and load restrictions, making it suitable for reverse-feed installations. Note that when back-feeding a plug-in breaker, local electrical codes typically require an approved breaker hold-down kit.

Yes. The breaker is built with an internal common trip mechanism. If a fault or overload occurs on any single phase, all three poles will trip simultaneously to prevent single-phasing of three-phase equipment.