ABB / General Electric THQD22150 Molded Case Circuit Breaker

This breaker is designed for use in GE A-Series and GE Spectra Series panelboards. It requires the appropriate bolt-on mounting hardware kit, such as a twin mounting kit, depending on your specific panelboard configuration.

The THQD series is the high-interrupting capacity variant of the standard TQD series. The THQD22150 provides a 22kAIC interrupting rating at 240V, making it suitable for commercial distribution systems with higher available fault currents where standard TQD ratings are insufficient.

The factory-installed line and load lugs on this breaker accept copper or aluminum conductors ranging from 4 AWG to 300 kcmil.

This bolt-on breaker requires a specific GE mounting hardware kit to be installed in A-Series or Spectra Series panelboards. The exact hardware kit depends on whether it is a single or twin mount configuration within the panel.

For modern upgrades, this unit is replaced by the ABB Formula A2 series, specifically part number A2N150TW-2. However, upgrading to the newer Formula A2 frame requires a panelboard retrofit kit, making direct THQD replacements preferable for existing installations.

No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit trip functions are factory-calibrated and cannot be adjusted in the field.

A feed-thru configuration indicates the breaker is equipped with lugs on both the line and load sides. This allows for direct wire terminations on both ends, which is commonly required in main distribution panels, metering centers, and standalone enclosures.

Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires group motor protection.