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3G Electric
SQUARE D MJA36400 M-Frame Molded Case Circuit Breaker - M-Frame Square D Molded Case Circuit Breakers
SQUARE DM-Frame Square D Molded Case Circuit Breakers

SQUARE D MJA36400 M-Frame Molded Case Circuit Breaker

The Square D MJA36400 is a 3-pole, 400 A M-Frame 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 terminals, and ABC phase…

SKU 3G-OTH-609495

Also listed as: MJA 36400 · MJA-36400

Brand
SQUARE D
Item
MJA36400 M-Frame Molded Case Circuit Breaker
Part Number
MJA36400
Category
M-Frame Square D Molded Case Circuit Breakers
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SQUARE D
Manufacturer Part Number
MJA36400
Series
MJ
Type
25kA at 600V AC, Adj, Box Lug, ABC, MJ
AC
600V
Poles
3
Max. AIR Rating
25kA at 600V AC
Phase Connection
ABC
Instantaneous Trip
Adjustable
Terminal Connection
Box Lug

Technical Documents

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

Product Description

The Square D MJA36400 is a 3-pole, 400 A M-Frame 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 terminals, and ABC phase connection, part of the MJ series.

Frequently Asked Questions

What is the Square D MJA36400 molded case circuit breaker used for?

The Square D MJA36400 is a 3-pole, 400 A M-Frame molded case circuit breaker used for overcurrent protection in industrial power distribution systems. It is rated 600V AC with a 25kA interrupting capacity and an adjustable instantaneous trip, making it suitable for motor and feeder circuits.

What are the specifications of the Square D MJA36400?

The Square D MJA36400 is a 3-pole, 400 A 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 terminals, and ABC phase connection. It is part of the MJ series and has MPN MJA36400.

Where to buy the Square D MJA36400 worldwide?

3G Electric supplies the Square D MJA36400 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 M-Frame molded case circuit breaker.

How to select the right Square D MJA36400 for my application?

To select the Square D MJA36400, verify your system voltage (600V AC max), continuous load (400 A), and available fault current (up to 25kA). Ensure the adjustable instantaneous trip range covers your motor or feeder inrush. Confirm box lug terminal size matches your conductor. 3G Electric can help with application guidance.

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 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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