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Grey Square D QOB bolt-on GFCI breaker, paddle actuator, compact 4.1 by .8 by 2.9 inches

SQUARE D

SQUARE D QOB130GFI Ground Fault Circuit Breaker 30A 1 Pole 120V AC Bolt On

SKU CH-VCV9-7DTTK

Provides 30 A ground-fault protection for single-phase 120 V AC circuits in QO load centres and NQ panelboards with a bolt-on paddle actuator

  • Ground-fault protection for personnel safety at 30 A
  • Bolt-on mounting fits QO and NQ panels without tools
  • Single-pole 120 V AC design matches standard residential circuits
  • 10 kA interrupting rating clears faults quickly
  • Compact 4.1 in by .8 in frame saves panel space

QOB 30 A Ground-Fault Breaker

The Square D QOB130GFI is a single-pole ground-fault circuit interrupter rated 30 amps at 120 volts AC. It mounts by bolting onto compatible QO load centres and NQ panelboards. A 10 kA interrupting rating at 120 V AC provides short-circuit protection alongside ground-fault detection.

Installers needing single-pole ground-fault

Electricians adding ground-fault protection to a single 120-volt branch circuit will find this breaker a direct fit for QO and NQ equipment. Installations that require two-pole or three-pole ground-fault coverage, or a higher ampere rating, cannot use this device. Circuits operating above 120 volts AC or needing DC ratings are also outside its scope.

Bolt-on mounting for QO and NQ panels

The breaker uses a bolt-on connection that secures it to QO load centres and NQ panelboards. Pressure-plate terminals accept the circuit conductors. Physical dimensions are 4.1 inches long, .8 inches wide and 2.9 inches deep within a 100 A frame size.

How it compares

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

Price $178.99
Pricier than about 81% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameSQUARE D

Questions about this item

Does the 30 A bolt-on GFI breaker have any user-serviceable parts or a replaceable trip element?

The QOB130GFI is a sealed miniature circuit breaker with no user-serviceable components; the ground-fault trip mechanism and pressure-plate terminals are factory-assembled and not field-replaceable.

At 120 V AC, what is the maximum fault current the 30 A QOB breaker can interrupt before it must be replaced?

The breaker carries a 10 kA AIR rating at 120 V AC, so it is tested to clear faults up to 10 000 amperes; any event exceeding that level would require replacement.

How warm does the 0.8 in wide QOB130GFI run when carrying 30 A continuously in a QO load center?

The 100 A frame and pressure-plate terminals are designed to operate within UL temperature-rise limits at full 30 A load; normal panel ventilation keeps the 4.1 in long body at acceptable temperatures during all-day operation.

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