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SQUARE D QOB145 Bolt-On Miniature Circuit Breaker - QOB Series, Bolt-On Square D Miniature Circuit Breakers
SQUARE DQOB Series, Bolt-On Square D Miniature Circuit Breakers

SQUARE D QOB145 Bolt-On Miniature Circuit Breaker

The SQUARE D QOB Series Miniature Circuit Breaker (SKU QOB145, MPN QOB145) is a 45 A, single-phase, bolt-on circuit breaker rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use…

SKU 3G-OTH-23408

Also listed as: QOB 145 · QOB-145

Brand
SQUARE D
Item
QOB145 Bolt-On Miniature Circuit Breaker
Part Number
QOB145
Category
QOB Series, Bolt-On Square D Miniature Circuit Breakers
Available to Order
Also known as:QOB145SQUARE D
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

SQUARE D
Manufacturer Part Number
QOB145
Type
Single Phase, 10kA at 120/240V AC
AC
120/240V
Amps
45 A
Phase
Single
Poles
1
For Use With
Square D NQOD Panelboards
Max. AIR Rating
10kA at 120/240V AC
AC Voltage Rating
120/240V AC

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

Product Description

The SQUARE D QOB Series Miniature Circuit Breaker (SKU QOB145, MPN QOB145) is a 45 A, single-phase, bolt-on circuit breaker rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with Square D NQOD panelboards, this 1-pole breaker provides overcurrent protection in industrial electrical distribution systems.

Frequently Asked Questions

What is the SQUARE D QOB145 miniature circuit breaker used for?

The SQUARE D QOB145 provides overcurrent protection in industrial electrical distribution systems. It is a 45 A, single-phase, bolt-on breaker rated for 120/240V AC with a 10kA interrupting rating, designed for use with Square D NQOD panelboards.

What are the specifications of the SQUARE D QOB145 circuit breaker?

The SQUARE D QOB145 is a 1-pole, 45 A, single-phase miniature circuit breaker rated 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. It is a bolt-on type for use with Square D NQOD panelboards.

Where to buy the SQUARE D QOB145 circuit breaker worldwide?

3G Electric supplies the SQUARE D QOB145 circuit breaker worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time.

How to install the SQUARE D QOB145 circuit breaker?

Install the SQUARE D QOB145 by bolting it into a compatible Square D NQOD panelboard. Ensure the panel is de-energized, verify the 45 A rating matches the circuit load, and torque terminals to manufacturer specifications. Always follow local electrical codes.

Used in

Common applications for SQUARE D
Commercial electrical panels — QO and QOB miniature circuit breakers for overcurrent protection in load centers and panelboards.
HVACR equipment — 8910 Series Type DPA definite purpose contactors for switching compressor and fan motor loads.
Industrial power distribution — J-Frame molded case circuit breakers for main and feeder protection in switchboards.
Residential ground-fault protection — QO and QOB GFI circuit breakers for kitchens, bathrooms, and outdoor circuits.
Motor control centers — definite purpose contactors for controlling pumps, fans, and other moderate motor loads.
OEM machinery — Square D circuit breakers and contactors for integration into control panels and equipment.
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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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