We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
⌕
RFQ CartGet a QuoteSign inSign up
SQUARE D Miniature Circuit Breaker: 50 A, 120/240V AC, Three 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: 50 A, 120/240V AC, Three Phase, 10kA at 120/240V AC

The SQUARE D QOB Series Miniature Circuit Breaker (MPN QOB3501021) is a 50 A, three-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…

SKU 3G-OTH-23249

Brand
SQUARE D
Item
Miniature Circuit Breaker: 50 A, 120/240V AC, Three Phase, 10kA at 120/240V AC
Category
QOB Series, Bolt-On Square D Miniature Circuit Breakers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

SQUARE D
Manufacturer Part Number
QOB3501021
Type
Three Phase, 10kA at 120/240V AC
AC
120/240V
Amps
50 A
Phase
Three
Poles
3
For Use With
Square D NQOD Panelboards
Max. AIR Rating
10kA at 120/240V AC
AC Voltage Rating
120/240V AC
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The SQUARE D QOB Series Miniature Circuit Breaker (MPN QOB3501021) is a 50 A, three-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 3-pole breaker provides overcurrent protection in industrial electrical distribution systems.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
SQUARE D Miniature Circuit Breaker: 50 A, 120/240V AC, Three Phase, 22kA at 120/240V AC, 3 Poles (MPN QOB350VH). Key specifications — Phase: Three; Amps: 50 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 22kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 50 A, 120/240V AC, Three Phase, 22kA at 120/240V AC, 3 Poles (MPN QOB350VH). Key specifications — Phase: Three; Amps: 50 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 22kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 60 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QOB3601021). Key specifications — Phase: Three; Amps: 60 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 60 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QOB3601021). Key specifications — Phase: Three; Amps: 60 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 70 A, 120/240V AC, Three Phase, 22kA at 120/240V AC, 3 Poles (MPN QOB370VH). Key specifications — Phase: Three; Amps: 70 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 22kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 70 A, 120/240V AC, Three Phase, 22kA at 120/240V AC, 3 Poles (MPN QOB370VH). Key specifications — Phase: Three; Amps: 70 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 22kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 40 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QOB3401021). Key specifications — Phase: Three; Amps: 40 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 40 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QOB3401021). Key specifications — Phase: Three; Amps: 40 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 80 A, 120/240V AC, Three Phase, 22kA at 120/240V AC, 3 Poles (MPN QOB380VH). Key specifications — Phase: Three; Amps: 80 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 22kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 80 A, 120/240V AC, Three Phase, 22kA at 120/240V AC, 3 Poles (MPN QOB380VH). Key specifications — Phase: Three; Amps: 80 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 22kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 30 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QOB3301021). Key specifications — Phase: Three; Amps: 30 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 30 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QOB3301021). Key specifications — Phase: Three; Amps: 30 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.

More from SQUARE D

View all SQUARE D parts →
SQUARE D Miniature Circuit Breaker: 20 A, 120/208V AC, Three Phase, 10kA at 208/120V AC, 3 Poles (MPN QOB320GFI). Key specifications — Phase: Three; Amps: 20 A; AC Voltage Rating: 120/208V AC; Max. AIR Rating: 10kA at 208/120V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 20 A, 120/208V AC, Three Phase, 10kA at 208/120V AC, 3 Poles (MPN QOB320GFI). Key specifications — Phase: Three; Amps: 20 A; AC Voltage Rating: 120/208V AC; Max. AIR Rating: 10kA at 208/120V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 25 A, 120V AC, Single Phase, 10kA at 120V AC, 1 Poles (MPN QOB125GFI). Key specifications — Phase: Single; Amps: 25 A; AC Voltage Rating: 120V AC; Max. AIR Rating: 10kA at 120V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 25 A, 120V AC, Single Phase, 10kA at 120V AC, 1 Poles (MPN QOB125GFI). Key specifications — Phase: Single; Amps: 25 A; AC Voltage Rating: 120V AC; Max. AIR Rating: 10kA at 120V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 40 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 1 Poles (MPN QOB1401021). Key specifications — Phase: Single; Amps: 40 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 40 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 1 Poles (MPN QOB1401021). Key specifications — Phase: Single; Amps: 40 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 15 A, 120/240V AC, Three Phase, 22kA at 120/240V AC, 3 Poles (MPN QOB315VH). Key specifications — Phase: Three; Amps: 15 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 22kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 15 A, 120/240V AC, Three Phase, 22kA at 120/240V AC, 3 Poles (MPN QOB315VH). Key specifications — Phase: Three; Amps: 15 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 22kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 70 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QOB270). Key specifications — Phase: Single; Amps: 70 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 70 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QOB270). Key specifications — Phase: Single; Amps: 70 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 20 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QOB220). Key specifications — Phase: Single; Amps: 20 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 20 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 2 Poles (MPN QOB220). Key specifications — Phase: Single; Amps: 20 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 15 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 1 Poles (MPN QOB115). Key specifications — Phase: Single; Amps: 15 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 15 A, 120/240V AC, Single Phase, 10kA at 120/240V AC, 1 Poles (MPN QOB115). Key specifications — Phase: Single; Amps: 15 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D Miniature Circuit Breaker: 90 A, 120/240V AC, Single Phase, 22kA at 120/240V AC, 2 Poles (MPN QOB290VH). Key specifications — Phase: Single; Amps: 90 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 22kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.
SQUARE D
SQUARE D Miniature Circuit Breaker: 90 A, 120/240V AC, Single Phase, 22kA at 120/240V AC, 2 Poles (MPN QOB290VH). Key specifications — Phase: Single; Amps: 90 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 22kA at 120/240V AC; For Use With: Square D NQOD Panelboards; Brand: SQUARE D.