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SQUARE D QO3501021 Miniature Circuit Breaker, 50 A, 3-Pole, 120/240V AC, 10kA - QO Series, Plug-In Square D Miniature Circuit Breakers
SQUARE DQO Series, Plug-In Square D Miniature Circuit Breakers

SQUARE D QO3501021 Miniature Circuit Breaker, 50 A, 3-Pole, 120/240V AC, 10kA

The SQUARE D QO3501021 is a 50 A, three-phase, plug-in miniature circuit breaker from the QO Series, rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with QO Load Centers and…

SKU 3G-OTH-21991

Also listed as: QO 3501021 · QO-3501021

Brand
SQUARE D
Item
QO3501021 Miniature Circuit Breaker, 50 A, 3-Pole, 120/240V AC, 10kA
Part Number
QO3501021
Category
QO Series, Plug-In Square D Miniature Circuit Breakers
Available to Order
Also known as:QO3501021SQUARE D
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Technical Specifications

SQUARE D
Manufacturer Part Number
QO3501021
Type
Three Phase, 10kA at 120/240V AC
AC
120/240V
Amps
50 A
Phase
Three
Poles
3
For Use With
QO Load Centers and NQ 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 QO3501021 is a 50 A, three-phase, plug-in miniature circuit breaker from the QO Series, rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with QO Load Centers and NQ Panelboards, this 3-pole breaker provides overcurrent protection in industrial electrical distribution systems.

Frequently Asked Questions

What is the SQUARE D QO3501021 miniature circuit breaker used for?

The SQUARE D QO3501021 provides overcurrent protection in industrial electrical distribution systems. It is a 50 A, three-phase, plug-in breaker rated for 120/240V AC with a 10kA interrupting rating, designed for use with QO Load Centers and NQ Panelboards.

What are the specifications of the SQUARE D QO3501021 circuit breaker?

The SQUARE D QO3501021 is a 50 A, three-phase, 3-pole miniature circuit breaker rated 120/240V AC. It has a maximum AIR rating of 10kA at 120/240V AC and is designed for plug-in installation in QO Load Centers and NQ Panelboards.

Where to buy the SQUARE D QO3501021 circuit breaker worldwide?

3G Electric supplies the SQUARE D QO3501021 miniature circuit breaker to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive genuine SQUARE D QO Series breakers for your industrial electrical distribution needs.

How to install the SQUARE D QO3501021 circuit breaker?

Install the SQUARE D QO3501021 by plugging it into a compatible QO Load Center or NQ Panelboard. Ensure the panel is de-energized, align the breaker with the bus bar, and press firmly until it snaps into place. Always follow local electrical codes and manufacturer guidelines.

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 qo series, plug-in 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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