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SQUARE D Miniature Circuit Breaker: 90 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: 90 A, 120/240V AC, Single Phase, 10kA at 120/240V AC

The SQUARE D QOU290 is a 90 A, single-phase, 2-pole miniature circuit breaker from the QOU Series, rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with air conditioning and…

SKU 3G-OTH-23348

Brand
SQUARE D
Item
Miniature Circuit Breaker: 90 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
QOU290
Type
Single Phase, 10kA at 120/240V AC
AC
120/240V
Amps
90 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 QOU290 is a 90 A, single-phase, 2-pole miniature circuit breaker from the QOU Series, rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with air conditioning and refrigeration equipment, this unit-mount breaker provides overcurrent protection in a compact form factor.

Frequently Asked Questions

What is the SQUARE D QOU290 miniature circuit breaker used for?

The SQUARE D QOU290 is a 90 A, 2-pole miniature circuit breaker designed for overcurrent protection in air conditioning and refrigeration equipment. It operates at 120/240V AC single-phase with a 10kA interrupting rating, making it suitable for commercial HVAC and refrigeration applications.

What are the specifications of the SQUARE D QOU290 circuit breaker?

The SQUARE D QOU290 is a 90 A, single-phase, 2-pole miniature circuit breaker rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. It is part of the QOU Series and is designed for use with air conditioning and refrigeration equipment.

Where to buy the SQUARE D QOU290 circuit breaker worldwide?

3G Electric supplies the SQUARE D QOU290 miniature circuit breaker worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this genuine SQUARE D breaker for your HVAC or refrigeration application.

How to select the right SQUARE D QOU series breaker for my application?

To select the correct SQUARE D QOU series breaker, match the voltage (120/240V AC), current rating (e.g., 90 A for the QOU290), and interrupting capacity (10kA) to your equipment's requirements. Ensure it is listed for use with air conditioning and refrigeration systems. Consult a licensed electrician for proper sizing.

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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