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SQUARE D Miniature Circuit Breaker: 20 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: 20 A, 120/240V AC, Single Phase, 10kA at 120/240V AC

The SQUARE D QOB Series Miniature Circuit Breaker (MPN QOB120CAFI) is a 20 A, single-phase, bolt-on circuit breaker rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. It is designed for use with…

SKU 3G-OTH-22726

Brand
SQUARE D
Item
Miniature Circuit Breaker: 20 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
QOB120CAFI
Type
Single Phase, 10kA at 120/240V AC
AC
120/240V
Amps
20 A
Phase
Single
Poles
1
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 QOB120CAFI) is a 20 A, single-phase, bolt-on circuit breaker 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 QOB120CAFI miniature circuit breaker used for?

The SQUARE D QOB120CAFI is a 20 A, single-phase, bolt-on miniature circuit breaker used for overcurrent protection in QO Load Centers and NQ Panelboards. It is rated for 120/240V AC with a 10kA interrupting rating, making it suitable for residential and commercial electrical distribution systems.

What are the specifications of the SQUARE D QOB120CAFI circuit breaker?

The SQUARE D QOB120CAFI is a 20 A, single-phase, bolt-on miniature circuit breaker with an AC voltage rating of 120/240V AC and a maximum AIR rating of 10kA at 120/240V AC. It is designed for use with QO Load Centers and NQ Panelboards, and is part of the QOB Series.

Where to buy the SQUARE D QOB120CAFI circuit breaker worldwide?

3G Electric supplies the SQUARE D QOB120CAFI miniature circuit breaker worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this QOB Series bolt-on breaker.

How to install the SQUARE D QOB120CAFI bolt-on circuit breaker?

To install the SQUARE D QOB120CAFI, ensure the panel is de-energized. Align the bolt-on terminals with the bus bar in a QO Load Center or NQ Panelboard, then tighten the mounting screw securely. Torque connections per manufacturer guidelines. Always follow local electrical codes and use appropriate 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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