Square D Q232100H Molded Case Circuit Breaker

This breaker is specifically built with an I-Line style plug-on connection. It must be installed in Square D I-Line panelboards or switchboards and cannot be used in standard QO load centers or NQ panels.

The line side of the breaker pushes directly onto the I-Line bus stack. A captive mounting foot on the back of the breaker then bolts to the enclosure pan, firmly securing the component under mechanical and electrical stress.

No, the Q2 series is an obsolete legacy frame. For modernizing an I-Line panelboard, the PowerPacT Q-Frame QDA32100 is the recommended active substitute, offering a similar footprint with a 25kAIC rating.

The H denotes a High Interrupting Capacity variant. It increases the breaker's fault current rating to 22kAIC at 240VAC, whereas standard Q2 models without the H are typically rated for only 10kAIC.

No, the Q232100H utilizes fixed thermal and fixed magnetic trip mechanisms. If your application requires adjustable long-time or instantaneous pickup settings, a different breaker family with an electronic trip unit is required.

Yes, the Q232100H is HACR rated. This certifies it for safe use with the inductive loads and starting surges characteristic of heating, air conditioning, and refrigeration equipment.

Yes, it features a visual trip indicator. When tripped by an overcurrent or short circuit, the toggle handle moves to a distinct center position, allowing electricians to quickly identify the faulted circuit in a large switchboard.