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Small grey plastic single-pole breaker with paddle actuator and bolt-on base

SQUARE D

SQUARE D QOB130 Miniature Circuit Breaker 30A 1 Pole 120/240V AC

SKU CH-Z1DY-AQKNC

A 30 A single-pole breaker for 120/240 V AC panels with a 10 kA interrupt rating and bolt-on mounting

  • 30 A single-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 panelboards
  • Pressure-plate terminals accept wire without special tools
  • Compact 3 in by .8 in frame saves panel space

QOB130 30 A Single-Pole Breaker

The Square D QOB130 is a bolt-on miniature circuit breaker rated at 30 amps for 120/240 V AC and 48 V DC systems. It carries a 10 kA interrupting rating at 120/240 V AC and fits QO and NQOD panelboards with a pressure-plate terminal connection.

QO panelboard upgrades and new installs

This breaker suits electricians adding or replacing a single-pole circuit in Square D QO or NQOD load centres. It will not suit panels that accept only plug-on breakers, nor three-phase or multi-pole applications requiring common-trip operation.

10 kA AIR at 120/240 V AC

The 10 kA interrupting rating is the critical figure that determines whether this device can safely clear a fault in the target installation. Verify that the available fault current at the panel does not exceed this value before specifying the breaker.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $31.99
Cheaper than about 69% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameSQUARE D

Questions about this item

What load-center series must I already have to install this QOB130 breaker?

It fits Square D NQOD panelboards and QO-series load centers only.

Will the 10 kA interrupting rating coordinate with older QO breakers already in the panel?

Yes, the 10 kA AIR at 120/240 V AC matches the standard rating used on legacy QO devices.

How can I verify the breaker is seated correctly after bolting it on?

The paddle actuator should snap firmly into the ON position and the pressure-plate terminals must grip the conductors tightly.

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