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SQUARE D Miniature Circuit Breaker: 70 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: 70 A, 120/240V AC, Three Phase, 22kA at 120/240V AC

The SQUARE D QO370VH is a 70 A, three-phase miniature circuit breaker from the QO Series, designed for plug-in installation in QO Load Centers and NQ Panelboards. It has an AC voltage rating of 120/240V AC and a…

SKU 3G-OTH-22128

Brand
SQUARE D
Item
Miniature Circuit Breaker: 70 A, 120/240V AC, Three Phase, 22kA at 120/240V AC
Category
QO Series, Plug-In Square D Miniature Circuit Breakers
Available to Order
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

SQUARE D
Manufacturer Part Number
QO370VH
Type
Three Phase, 22kA at 120/240V AC
AC
120/240V
Amps
70 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

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

Product Description

The SQUARE D QO370VH is a 70 A, three-phase miniature circuit breaker from the QO Series, designed for plug-in installation in QO Load Centers and NQ Panelboards. It has an AC voltage rating of 120/240V AC and a maximum AIR rating of 22kA at 120/240V AC.

Frequently Asked Questions

What is the SQUARE D QO370VH miniature circuit breaker used for?

The SQUARE D QO370VH is a 70 A, three-phase miniature circuit breaker used for overcurrent protection in QO Load Centers and NQ Panelboards. It handles 120/240V AC systems with a 22kA interrupting rating, making it suitable for commercial and industrial branch circuits.

What are the specifications of the SQUARE D QO370VH?

The SQUARE D QO370VH is a 3-pole, 70 A, three-phase miniature circuit breaker rated 120/240V AC with a maximum AIR rating of 22kA at 120/240V AC. It is a plug-in QO Series unit designed for use with QO Load Centers and NQ Panelboards.

Where to buy the SQUARE D QO370VH worldwide?

3G Electric supplies the SQUARE D QO370VH miniature circuit breaker worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this QO Series breaker.

How to install the SQUARE D QO370VH circuit breaker?

Install the SQUARE D QO370VH by plugging it into a compatible QO Load Center or NQ Panelboard bus. Ensure power is off, align the breaker with the mounting rail, and press firmly until it snaps into place. Follow NEC guidelines and local codes for proper torque and wiring.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
SQUARE D Miniature Circuit Breaker: 40 A, 120/240V AC, Three Phase, 22kA at 120/240V AC, 3 Poles (MPN QO340VH)
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SQUARE D Miniature Circuit Breaker: 30 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QO3301021)
SQUARE D Miniature Circuit Breaker: 70 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QO370)
SQUARE D
SQUARE D Miniature Circuit Breaker: 70 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QO370)
SQUARE D Miniature Circuit Breaker: 70 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QO3701021)
SQUARE D
SQUARE D Miniature Circuit Breaker: 70 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QO3701021)

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