ABB / General Electric TQD22175 Molded Case Circuit Breaker

This bolt-on breaker is specifically designed for GE A-Series panelboards, GE individual enclosures, and compatible commercial switchboards. It will not fit in standard residential Q-Line load centers that require plug-in THQL or THQP breakers.

While both share the same physical footprint and 175A rating, they differ in short circuit interrupting capacity. The TQD22175 provides standard 10kAIC protection at 240V, whereas the THQD22175 offers a higher 22kAIC rating for systems with higher available fault currents.

The standard TQD22175 is designed for busbar mounting and only includes load-side lugs. For standalone enclosures requiring cable connections on both sides, you will need the TQD22175WL variant, which comes factory-equipped with both line and load lugs.

Yes, this breaker is HACR rated, making it fully approved for protecting heating, air conditioning, and refrigeration circuits that require a 175A overcurrent device.

Yes, the TQD frame features a non-interchangeable trip unit and supports reverse feed applications. This allows it to be safely back-fed when used as a main breaker in compatible panels or solar derating setups.

Yes, the 175A rating makes this breaker a frequent choice for main breaker derating in solar retrofits. Electricians often use it to replace a 200A main breaker to comply with the NEC 120 percent rule for solar backfeed.

It features a fixed thermal-magnetic trip unit. The thermal component provides long-time protection against sustained overloads, while the magnetic component delivers instantaneous protection against sudden short circuits.