Square D QOB220VH Miniature Circuit Breaker

This bolt-on breaker is designed specifically for Square D NQ and legacy NQOD panelboards. It cannot be used in standard QO load centers, which require plug-on breakers.

The "VH" designates a 22 kA interrupting rating at 120/240 VAC. This provides a higher fault current rating compared to standard QO or QOB breakers, which typically have a 10 kA rating.

As a 2-pole breaker, it requires two standard 3/4 inch spaces, taking up a total width of 1.5 inches on the panel bus.

The pressure plate terminals should be torqued to 40.7 lb-in (4.6 N.m) when securing the 14 AWG to 8 AWG copper or aluminum wiring.

No. While they share the same internal trip mechanisms and 3/4 inch pole spacing, the bolt-on mounting of the QOB series is physically incompatible with plug-on QO load centers. It is strictly for panelboards equipped with threaded mounting pads.

When the breaker trips due to an overload or short circuit, the handle snaps to a center position and a high-visibility red indicator appears in a small window. This allows maintenance personnel to quickly identify the tripped circuit without guessing.

It will fit in the exact same panel space as the standard QOB220. However, it offers a higher 22 kA interrupting rating. You can generally use a higher-rated breaker to replace a 10 kA unit, provided the rest of the electrical system supports it.

Yes, it is HACR rated, making it suitable for group motor applications found in heating, air conditioning, and refrigeration equipment.

No separate kit is needed. The breaker includes the necessary built-in mounting hardware to secure it directly to the tapped busbar of a compatible NQ or NQOD panelboard.