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SQUARE D Molded Case Circuit Breaker: 400 A Amps, 25kA at 600V AC, Adj, Box Lug - M-Frame Square D Molded Case Circuit Breakers
SQUARE DM-Frame Square D Molded Case Circuit Breakers

SQUARE D Molded Case Circuit Breaker: 400 A Amps, 25kA at 600V AC, Adj, Box Lug

The Square D M-Frame Molded Case Circuit Breaker (MPN MJA264002) is a 400 A, 2-pole unit rated 600V AC with a maximum AIR rating of 25kA at 600V AC. It features an adjustable instantaneous trip and box lug terminal…

SKU 3G-OTH-609498

Brand
SQUARE D
Item
Molded Case Circuit Breaker: 400 A Amps, 25kA at 600V AC, Adj, Box Lug
Category
M-Frame Square D Molded Case Circuit Breakers
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Technical Specifications

SQUARE D
Manufacturer Part Number
MJA264002
Series
MJ
Type
25kA at 600V AC, Adj, Box Lug, AC, MJ
AC
600V
Poles
2
Max. AIR Rating
25kA at 600V AC
Phase Connection
AC
Instantaneous Trip
Adjustable
Terminal Connection
Box Lug
View Full Spec Sheet

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

Product Description

The Square D M-Frame Molded Case Circuit Breaker (MPN MJA264002) is a 400 A, 2-pole unit rated 600V AC with a maximum AIR rating of 25kA at 600V AC. It features an adjustable instantaneous trip and box lug terminal connections, part of the MJ series.

Frequently Asked Questions

What is the Square D MJA264002 molded case circuit breaker used for?

The Square D MJA264002 is a 400 A, 2-pole molded case circuit breaker used for overcurrent protection in industrial power distribution systems. It is rated 600V AC with a 25kA interrupting capacity, making it suitable for branch circuits and feeder protection in manufacturing plants and commercial facilities.

What are the specifications of the Square D MJA264002 circuit breaker?

The Square D MJA264002 is a 400 A, 2-pole molded case circuit breaker rated 600V AC with a maximum AIR rating of 25kA at 600V AC. It features an adjustable instantaneous trip, box lug terminal connections, and is part of the MJ series. The phase connection is AC.

Where to buy the Square D MJA264002 circuit breaker worldwide?

3G Electric supplies the Square D MJA264002 molded case circuit breaker worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this 400 A, 2-pole unit with adjustable trip.

How to select the right Square D MJ series circuit breaker for my application?

To select the right Square D MJ series breaker, match the continuous current rating (e.g., 400 A for the MJA264002), voltage rating (600V AC), and interrupting capacity (25kA) to your system's fault current. Ensure the pole count (2) and trip type (adjustable instantaneous) align with your load and coordination requirements.

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 m-frame square d molded case 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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Molded Case Circuit Breaker: 800 A Amps, 25kA at 600V AC, Adj, Box Lug, ABC, 3 Poles, 600V AC, MJ (MPN MJL36800). Key specifications — Terminal Connection: Box Lug; Phase Connection: ABC; Max. AIR Rating: 25kA at 600V AC; Instantaneous Trip: Adjustable; Series: MJ.
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