Square D Q222150ABH Molded Case Circuit Breaker

This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It utilizes an I-Line style plug-in connection to mount directly to the busbar.

The "AB" suffix indicates the phase connection. This 2-pole breaker is configured to connect specifically to the A and B phases of the I-Line panelboard bus.

The "H" designates a high interrupting rating. This breaker provides a 22kA interrupting capacity at 240V AC, which is higher than the 10kA rating found on standard Q2 frames.

The Q222-H frame is a legacy product. For new installations or direct replacements, it has been superseded by the PowerPact Q-frame series, such as the QDA22150.

The terminal lugs on the Q222150ABH accept wire gauges from 4 AWG up to 300 kcmil. They are rated for use with both aluminum and copper conductors.

The breaker features plug-on jaws that clamp directly onto the I-Line busbar assembly. A mounting bracket and retaining screw secure the breaker to the panelboard backpan, ensuring a solid electrical and mechanical connection.

Yes, this breaker includes a Visi-Trip indicator. This feature provides a clear visual confirmation when the breaker has tripped due to an overcurrent or short-circuit event, allowing for faster troubleshooting.