Square D QO280 Miniature Circuit Breaker

No. Homeline panels require breakers with a 1 inch wide format. The QO280 has a 3/4 inch per pole format and is only compatible with QO load centers, NQ panelboards, and NQOD panelboards.

It requires two adjacent 3/4 inch breaker spaces. Because it is a two-pole device, it will take up a total width of 1.5 inches on the panel bus.

Yes. If your NQ or NQOD panelboard requires bolt-on breakers rather than plug-on, the correct catalog number for the 80A equivalent is QOB280.

Yes, it is HACR rated. This means it has been tested and approved for use with heating, air conditioning, and refrigeration equipment that specifies a HACR type breaker for branch circuit protection.

Under standard electrical code practices, continuous loads running for three hours or more must not exceed 80 percent of the maximum breaker rating. For this 80A device, the continuous load limit is 64 Amps.

It features the Square D Visi-Trip indicator. When a trip occurs, the handle moves to a center position and a bright red flag appears in a small window, allowing you to easily identify the tripped circuit inside a dark electrical panel.

The terminals accept either copper or aluminum wire ranging from 4 AWG to 2/0 AWG. When using aluminum conductors, applying a recognized oxide-inhibiting joint compound to the stripped wire is highly recommended to prevent corrosion and ensure a safe, long-term connection.