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SQUARE D Molded Case Circuit Breaker: 400 A Amps, 42kA at 240V AC, Adj, Lug, AC - Square D Molded Case Circuit Breakers for I-Line Panelboards
SQUARE DSquare D Molded Case Circuit Breakers for I-Line Panelboards

SQUARE D Molded Case Circuit Breaker: 400 A Amps, 42kA at 240V AC, Adj, Lug, AC

The Square D LA Series Molded Case Circuit Breaker (MPN LA26400AC) is a 400 A, 42kA at 240V AC rated unit for I-Line Panelboards. It features an adjustable instantaneous trip, a 2,000 A low amp trip setting, and lug…

SKU 3G-OTH-609778

Brand
SQUARE D
Item
Molded Case Circuit Breaker: 400 A Amps, 42kA at 240V AC, Adj, Lug, AC
Category
Square D Molded Case Circuit Breakers for I-Line Panelboards
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Technical Specifications

SQUARE D
Manufacturer Part Number
LA26400AC
Series
LA
Type
42kA at 240V AC, Adj, Lug, AC
Max. AIR Rating
42kA at 240V AC
Phase Connection
AC
Instantaneous Trip
Adjustable
Terminal Connection
Lug
Low Amp Trip Setting
2,000 A
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SQUARE D Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Square D LA Series Molded Case Circuit Breaker (MPN LA26400AC) is a 400 A, 42kA at 240V AC rated unit for I-Line Panelboards. It features an adjustable instantaneous trip, a 2,000 A low amp trip setting, and lug terminal connections for AC phase connections.

Frequently Asked Questions

What is the Square D LA26400AC molded case circuit breaker used for?

The Square D LA26400AC is a 400 A molded case circuit breaker designed for I-Line panelboards in industrial and commercial power distribution systems. It protects circuits from overloads and short circuits with an adjustable instantaneous trip and a 42kA interrupting rating at 240V AC.

What are the specifications of the Square D LA26400AC circuit breaker?

The Square D LA26400AC is a 400 A molded case circuit breaker with a 42kA interrupting rating at 240V AC. It features an adjustable instantaneous trip, a 2,000 A low amp trip setting, lug terminal connections, and AC phase connection. It is part of the LA Series for I-Line panelboards.

Where to buy the Square D LA26400AC circuit breaker worldwide?

3G Electric supplies the Square D LA26400AC 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, 42kA unit.

How to select the right Square D LA Series circuit breaker for an I-Line panelboard?

To select the correct Square D LA Series breaker, match the frame size (400 A for LA26400AC) to your load requirements, verify the interrupting rating (42kA at 240V AC) exceeds available fault current, and confirm the adjustable trip settings (2,000 A low amp setting) coordinate with downstream protection.

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 square d molded case circuit breakers for i-line panelboards. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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