We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Grey rectangular bolt-on breaker, two paddle actuators, 3.5 by 1.5 by 2.9 inches

SQUARE D

SQUARE D QOB280 80A 2 Pole 120/240V AC circuit breaker

SKU CH-G22A-J298C

An 80 A two-pole breaker for 120/240 V AC panels with a 10 kA interrupt rating and bolt-on mounting

  • 80 A two-pole protection for 120/240 V AC circuits
  • 10 kA interrupting rating handles high fault currents
  • Bolt-on mounting fits Square D QO and NQOD load centres
  • 48 V DC rating adds low-voltage versatility
  • Compact 3.5 × 1.5 × 2.9 in frame saves panel space

Application Fit

The Square D QOB280 is a bolt-on miniature circuit breaker rated at 80 A for single-phase 120/240 V AC panels. It suits electricians and facility managers who need standard over-current protection in Square D NQOD or QO load centres. Buyers needing a plug-on style, a three-pole device, or a higher AIR rating must select a different model.

Sustained Load Behaviour

The breaker carries its full 80 A rating continuously within a minimum operating temperature of 77 °F inside the enclosure. Thermal-magnetic trip characteristics respond to prolonged overloads without nuisance opening during normal motor-start currents. The 10 kA interrupting capacity at 120/240 V AC clears sustained fault currents safely.

Decisive Specification

The bolt-on mounting style and QOB series designation determine compatibility; the breaker only fits Square D NQOD panelboards that accept QO-frame bolt-on devices. Verify the panelboard series before purchase because plug-on QO breakers will not seat in this footprint.

Highlights

  • 80 A two-pole protection for 120/240 V AC circuits
  • 10 kA interrupting rating handles high fault currents
  • Bolt-on mounting fits Square D QO and NQOD load centres
  • 48 V DC rating adds low-voltage versatility
  • Compact 3.5 × 1.5 × 2.9 in frame saves panel space

Specifications

BrandSQUARE D

Questions about this item

How much heat does the 80 A breaker produce when it runs continuously?

The breaker is rated for a minimum operating temperature of 77 °F and carries a 10 kA interrupting rating at 120/240 V AC; no specific heat-dissipation figure is published.

What panelboard must I already have for this bolt-on breaker to fit?

It mounts on Square D NQOD panelboards and is compatible with the QO load-center series.

Will the QOB280 coordinate with older QO breakers already in my panel?

Yes, it shares the QO series frame size of 100 A and the same bolt-on mounting, so it installs alongside existing QO devices.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.