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SQUARE D Miniature Circuit Breaker: 80 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: 80 A, 120/240V AC, Single Phase, 10kA at 120/240V AC

The SQUARE D QOB280 is a 2-pole, 80 A, single-phase miniature circuit breaker from the QOB Series, designed for bolt-on installation. It has an AC voltage rating of 120/240V AC and a maximum AIR rating of 10kA at…

SKU 3G-OTH-23390

Also listed as: QOB 280 · QOB-280

Brand
SQUARE D
Item
Miniature Circuit Breaker: 80 A, 120/240V AC, Single 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
QOB280
Type
Single Phase, 10kA at 120/240V AC
AC
120/240V
Amps
80 A
Phase
Single
Poles
2
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 QOB280 is a 2-pole, 80 A, single-phase miniature circuit breaker from the QOB Series, designed for bolt-on installation. It has an AC voltage rating of 120/240V AC and a maximum AIR rating of 10kA at 120/240V AC. This breaker is intended for use with Square D NQOD panelboards.

Frequently Asked Questions

What is the SQUARE D QOB280 miniature circuit breaker used for?

The SQUARE D QOB280 is a 2-pole, 80 A, single-phase miniature circuit breaker used for overcurrent protection in residential and commercial electrical panels. It is designed for bolt-on installation in Square D NQOD panelboards, providing reliable protection against short circuits and overloads at 120/240V AC.

What are the specifications of the SQUARE D QOB280 circuit breaker?

The SQUARE D QOB280 is a 2-pole, 80 A, single-phase 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 part of the QOB Series and is designed for bolt-on use with Square D NQOD panelboards.

Where to buy the SQUARE D QOB280 circuit breaker worldwide?

You can source the SQUARE D QOB280 circuit breaker through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide genuine SQUARE D components for your panelboard needs.

How to install the SQUARE D QOB280 circuit breaker?

To install the SQUARE D QOB280, ensure the panelboard is de-energized. Align the breaker's bolt-on tabs with the bus bar in a Square D NQOD panelboard and tighten the mounting screw securely. Connect the load wire to the terminal and torque 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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