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SQUARE D Miniature Circuit Breaker: 50 A, 120/240V AC, Single Phase, 10kA at 120/240V AC - QOB Series, Bolt-On Square D Miniature Circuit Breakers
SQUARE DQOB Series, Bolt-On Square D Miniature Circuit Breakers

SQUARE D Miniature Circuit Breaker: 50 A, 120/240V AC, Single Phase, 10kA at 120/240V AC

The SQUARE D QOB Series Miniature Circuit Breaker (MPN QOB250GFI) is a 50 A, single-phase, bolt-on unit rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. It is designed for use with QO Load…

SKU 3G-OTH-23196

Brand
SQUARE D
Item
Miniature Circuit Breaker: 50 A, 120/240V AC, Single Phase, 10kA at 120/240V AC
Category
QOB Series, Bolt-On Square D Miniature Circuit Breakers
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Technical Specifications

SQUARE D
Manufacturer Part Number
QOB250GFI
Type
Single Phase, 10kA at 120/240V AC
AC
120/240V
Amps
50 A
Phase
Single
Poles
2
For Use With
QO Load Centers and NQ Panelboards
Max. AIR Rating
10kA at 120/240V AC
AC Voltage Rating
120/240V AC
View Full Spec Sheet

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SQUARE D Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SQUARE D QOB Series Miniature Circuit Breaker (MPN QOB250GFI) is a 50 A, single-phase, bolt-on unit rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. It is designed for use with QO Load Centers and NQ Panelboards.

Frequently Asked Questions

What is the SQUARE D QOB250GFI miniature circuit breaker used for?

The SQUARE D QOB250GFI is a 50 A, single-phase, bolt-on miniature circuit breaker rated for 120/240V AC. It provides overcurrent and ground-fault protection in QO Load Centers and NQ Panelboards, commonly used in commercial and industrial electrical distribution systems.

What are the specifications of the SQUARE D QOB250GFI circuit breaker?

The SQUARE D QOB250GFI is a 50 A, 2-pole, single-phase bolt-on breaker rated 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. It is designed for use with QO Load Centers and NQ Panelboards. The manufacturer part number is QOB250GFI.

Where to buy the SQUARE D QOB250GFI circuit breaker worldwide?

3G Electric supplies the SQUARE D QOB250GFI miniature circuit breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this genuine SQUARE D part.

How to install the SQUARE D QOB250GFI bolt-on circuit breaker?

Install the SQUARE D QOB250GFI by first ensuring the panel is de-energized. Align the breaker's bolt-on tabs with the bus bar in a QO Load Center or NQ Panelboard, then tighten the mounting screw to the manufacturer's torque specification. Always follow local electrical codes and use proper personal protective equipment.

Used in

Common applications for SQUARE D
Commercial building electrical panels — Square D QO series plug-in circuit breakers for branch circuit protection
Industrial motor control centers — Square D QOB series bolt-on breakers in NQOD panelboards
Heating equipment installations — Square D QOU series unit-mount breakers for overcurrent protection
Outdoor electrical distribution — Square D L-Frame enclosures housing LAL/LHL breakers for 400 A service
Indoor facility power distribution — Square D Q-Frame enclosures with QBL/QDL breakers for 225 A circuits
Retrofit and replacement in existing Square D load centers — QO series breakers for 120/240V AC systems

SQUARE D Products

3G Electric supplies SQUARE D qob series, bolt-on square d miniature circuit breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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