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

The SQUARE D QOB310 is a three-pole, bolt-on miniature circuit breaker from the QOB Series, rated for 10 A at 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with Square D NQOD…

SKU 3G-OTH-23444

Also listed as: QOB 310 · QOB-310

Brand
SQUARE D
Item
Miniature Circuit Breaker: 10 A, 120/240V AC, Three Phase, 10kA at 120/240V AC
Category
QOB Series, Bolt-On Square D Miniature Circuit Breakers
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SQUARE D
Manufacturer Part Number
QOB310
Type
Three Phase, 10kA at 120/240V AC
AC
120/240V
Amps
10 A
Phase
Three
Poles
3
For Use With
Square D NQOD Panelboards
Max. AIR Rating
10kA at 120/240V AC
AC Voltage Rating
120/240V AC

Technical Documents

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

Product Description

The SQUARE D QOB310 is a three-pole, bolt-on miniature circuit breaker from the QOB Series, rated for 10 A at 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with Square D NQOD panelboards, this three-phase breaker provides overcurrent protection in a compact, bolt-on form factor.

Frequently Asked Questions

What is the SQUARE D QOB310 miniature circuit breaker used for?

The SQUARE D QOB310 is a three-pole, bolt-on miniature circuit breaker used for overcurrent protection in three-phase electrical systems. It is designed for use with Square D NQOD panelboards in commercial and industrial applications, providing reliable protection at 10 A and 120/240V AC.

What are the specifications of the SQUARE D QOB310 circuit breaker?

The SQUARE D QOB310 is a three-pole, bolt-on miniature circuit breaker rated for 10 A at 120/240V AC, three-phase, with a maximum AIR rating of 10kA at 120/240V AC. It is part of the QOB Series and is designed for use with Square D NQOD panelboards.

Where to buy the SQUARE D QOB310 circuit breaker worldwide?

3G Electric supplies the SQUARE D QOB310 miniature circuit breaker worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this QOB Series breaker for your project.

How to install the SQUARE D QOB310 circuit breaker?

To install the SQUARE D QOB310, ensure the panelboard is de-energized. Bolt the breaker securely into the Square D NQOD panelboard bus bar, connect the phase conductors to the line terminals, and torque connections to manufacturer specifications. 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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