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SQUARE D Miniature Circuit Breaker: 125 A, 120/240V AC, Single Phase, 10kA at 120/240V AC - QOU Series, Unit-Mount Square D Miniature Circuit Breakers
SQUARE DQOU Series, Unit-Mount Square D Miniature Circuit Breakers

SQUARE D Miniature Circuit Breaker: 125 A, 120/240V AC, Single Phase, 10kA at 120/240V AC

The SQUARE D QOU Series Miniature Circuit Breaker (SKU 2JWZ9) is a unit-mount, single-phase, 2-pole breaker rated for 125 A at 120/240V AC. It has a maximum AIR rating of 10kA at 120/240V AC and is designed for use…

SKU 3G-OTH-22911

Brand
SQUARE D
Item
Miniature Circuit Breaker: 125 A, 120/240V AC, Single Phase, 10kA at 120/240V AC
Category
QOU Series, Unit-Mount Square D Miniature Circuit Breakers
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Technical Specifications

SQUARE D
Manufacturer Part Number
QOU21251021
Type
Single Phase, 10kA at 120/240V AC
AC
120/240V
Amps
125 A
Phase
Single
Poles
2
For Use With
Air Conditioning and Refrigeration Equipment
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 QOU Series Miniature Circuit Breaker (SKU 2JWZ9) is a unit-mount, single-phase, 2-pole breaker rated for 125 A at 120/240V AC. It has a maximum AIR rating of 10kA at 120/240V AC and is designed for use with air conditioning and refrigeration equipment.

Frequently Asked Questions

What is the SQUARE D QOU21251021 miniature circuit breaker used for?

The SQUARE D QOU21251021 is a 2-pole, 125 A miniature circuit breaker designed for air conditioning and refrigeration equipment. It provides overcurrent protection in single-phase, 120/240V AC systems and is suitable for unit-mount applications in commercial or industrial HVAC installations.

What are the specifications of the SQUARE D QOU21251021 circuit breaker?

The SQUARE D QOU21251021 is a QOU Series unit-mount breaker rated 125 A at 120/240V AC, single phase, 2 poles. It has a maximum AIR rating of 10kA at 120/240V AC and is intended for use with air conditioning and refrigeration equipment. The manufacturer part number is QOU21251021.

Where to buy the SQUARE D QOU21251021 circuit breaker worldwide?

3G Electric supplies the SQUARE D QOU21251021 miniature circuit breaker worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this QOU Series breaker.

How to select the right SQUARE D QOU series breaker for HVAC equipment?

Select a SQUARE D QOU series breaker by matching the voltage (120/240V AC), current rating (125 A), pole count (2), and interrupting capacity (10kA) to your HVAC equipment's nameplate. Ensure the breaker is listed for use with air conditioning and refrigeration systems, as the QOU21251021 is.

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 qou series, unit-mount 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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