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SQUARE D Miniature Circuit Breaker: 50 A, 120/240V AC, Three Phase, 22kA at 120/240V AC - QO Series, Plug-In Square D Miniature Circuit Breakers
SQUARE DQO Series, Plug-In Square D Miniature Circuit Breakers

SQUARE D Miniature Circuit Breaker: 50 A, 120/240V AC, Three Phase, 22kA at 120/240V AC

The SQUARE D QO Series Miniature Circuit Breaker (MPN QO350VH) is a three-phase, plug-in circuit breaker rated for 50 A at 120/240V AC. It has a maximum AIR rating of 22kA at 120/240V AC and is designed for use with…

SKU 3G-OTH-21999

Brand
SQUARE D
Item
Miniature Circuit Breaker: 50 A, 120/240V AC, Three Phase, 22kA at 120/240V AC
Category
QO Series, Plug-In Square D Miniature Circuit Breakers
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Technical Specifications

SQUARE D
Manufacturer Part Number
QO350VH
Type
Three Phase, 22kA 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
22kA 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 QO Series Miniature Circuit Breaker (MPN QO350VH) is a three-phase, plug-in circuit breaker rated for 50 A at 120/240V AC. It has a maximum AIR rating of 22kA at 120/240V AC and is designed for use with QO Load Centers and NQ Panelboards.

Frequently Asked Questions

What is the SQUARE D QO350VH miniature circuit breaker used for?

The SQUARE D QO350VH is a three-phase miniature circuit breaker rated for 50 A at 120/240V AC. It provides overcurrent protection in QO Load Centers and NQ Panelboards, commonly used in commercial and industrial electrical distribution systems.

What are the specifications of the SQUARE D QO350VH?

The SQUARE D QO350VH is a 3-pole, plug-in miniature circuit breaker rated 50 A, 120/240V AC, three-phase, with a maximum AIR rating of 22kA at 120/240V AC. It is designed for use with QO Load Centers and NQ Panelboards.

Where to buy the SQUARE D QO350VH worldwide?

3G Electric supplies the SQUARE D QO350VH miniature circuit breaker worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to install the SQUARE D QO350VH circuit breaker?

To install the SQUARE D QO350VH, ensure the panel is de-energized. Align the plug-in base with the bus bar in a QO Load Center or NQ Panelboard and press firmly until it snaps into place. Verify torque on connections per manufacturer guidelines.

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 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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SQUARE D Miniature Circuit Breaker: 25 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QO225). Key specifications — Phase: Single; Amps: 25 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
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SQUARE D Miniature Circuit Breaker: 25 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QO225). Key specifications — Phase: Single; Amps: 25 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 50 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QO250EPD). Key specifications — Phase: Single; Amps: 50 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
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SQUARE D Miniature Circuit Breaker: 50 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QO250EPD). Key specifications — Phase: Single; Amps: 50 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 35 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QO235). Key specifications — Phase: Single; Amps: 35 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
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SQUARE D Miniature Circuit Breaker: 35 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QO235). Key specifications — Phase: Single; Amps: 35 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 10 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QO310). Key specifications — Phase: Three; Amps: 10 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
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SQUARE D Miniature Circuit Breaker: 10 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QO310). Key specifications — Phase: Three; Amps: 10 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 20 A, 120V AC, Single Phase, 10kA at 120/240V AC, 1 Poles (MPN QO120GFI). Key specifications — Phase: Single; Amps: 20 A; AC Voltage Rating: 120V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
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SQUARE D Miniature Circuit Breaker: 20 A, 120V AC, Single Phase, 10kA at 120/240V AC, 1 Poles (MPN QO120GFI). Key specifications — Phase: Single; Amps: 20 A; AC Voltage Rating: 120V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 50 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QO250GFI). Key specifications — Phase: Single; Amps: 50 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
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SQUARE D Miniature Circuit Breaker: 10 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QO210). Key specifications — Phase: Single; Amps: 10 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
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SQUARE D Miniature Circuit Breaker: 15 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QO2151021). Key specifications — Phase: Single; Amps: 15 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.