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SQUARE D Molded Case Circuit Breaker: 400 A Amps, 25kA at 120/240V AC, Adj, Lug - LA-, LH-, Q4-Frame Square D Molded Case Circuit Breakers
SQUARE DLA-, LH-, Q4-Frame Square D Molded Case Circuit Breakers

SQUARE D Molded Case Circuit Breaker: 400 A Amps, 25kA at 120/240V AC, Adj, Lug

The Square D Q4L2400 is a Q4-Frame molded case circuit breaker rated for 400 A with a maximum AIR rating of 25kA at 120/240V AC. This 2-pole unit features an adjustable instantaneous trip and lug-type terminal…

SKU 3G-OTH-609472

Brand
SQUARE D
Item
Molded Case Circuit Breaker: 400 A Amps, 25kA at 120/240V AC, Adj, Lug
Category
LA-, LH-, Q4-Frame Square D Molded Case Circuit Breakers
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Technical Specifications

SQUARE D
Manufacturer Part Number
Q4L2400
Series
Q4
Type
25kA at 120/240V AC, Adj, Lug, Non-Applicable, Q4
Poles
2
Max. AIR Rating
25kA at 120/240V AC
Phase Connection
Non-Applicable
Instantaneous Trip
Adjustable
Terminal Connection
Lug
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SQUARE D Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Square D Q4L2400 is a Q4-Frame molded case circuit breaker rated for 400 A with a maximum AIR rating of 25kA at 120/240V AC. This 2-pole unit features an adjustable instantaneous trip and lug-type terminal connections, with a non-applicable phase connection. 3G Electric interprets demand and delivers this genuine industrial breaker across 14 departments, with specialist depth in controls as an authorised distributor.

Frequently Asked Questions

What is the Square D Q4L2400 molded case circuit breaker used for?

The Square D Q4L2400 is a 400 A, 2-pole molded case circuit breaker used for overcurrent protection in industrial and commercial power distribution systems. Its adjustable instantaneous trip allows fine-tuning for motor and equipment protection, and it is suitable for 120/240V AC applications with a 25kA interrupting rating.

What are the specifications of the Square D Q4L2400 circuit breaker?

The Square D Q4L2400 is a Q4-Frame molded case circuit breaker rated 400 A, 2-pole, with a maximum AIR rating of 25kA at 120/240V AC. It features an adjustable instantaneous trip, lug-type terminal connections, and a non-applicable phase connection. The series is Q4, and the manufacturer part number is Q4L2400.

Where to buy the Square D Q4L2400 circuit breaker worldwide?

3G Electric supplies the genuine Square D Q4L2400 circuit breaker worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order this Q4-Frame breaker with adjustable trip and lug terminals for your power distribution needs.

How to select the correct Square D Q4L2400 circuit breaker for an application?

To select the Square D Q4L2400, verify your system voltage (120/240V AC), required ampere rating (400 A), and interrupting capacity (25kA minimum). Ensure the 2-pole configuration matches your phase connection (non-applicable here). The adjustable instantaneous trip allows coordination with downstream devices. Consult a licensed engineer for proper application.

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 la-, lh-, q4-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: 350 A Amps, 25kA at 120/240V AC, Adj, Lug, Non-Applicable, 2 Poles, Q4 (MPN Q4L2350). Key specifications — Terminal Connection: Lug; Phase Connection: Non-Applicable; Max. AIR Rating: 25kA at 120/240V AC; Instantaneous Trip: Adjustable; Series: Q4.
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Molded Case Circuit Breaker: 400 A Amps, 42kA at 240V AC, Adj, Lug, Non-Applicable, 2 Poles, 600V AC (MPN LAL26400). Key specifications — Terminal Connection: Lug; Phase Connection: Non-Applicable; Max. AIR Rating: 42kA at 240V AC; Instantaneous Trip: Adjustable; Series: LAL.
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Molded Case Circuit Breaker: 400 A Amps, 42kA at 240V AC, Adj, Lug, Non-Applicable, 2 Poles, 600V AC (MPN LAL26400). Key specifications — Terminal Connection: Lug; Phase Connection: Non-Applicable; Max. AIR Rating: 42kA at 240V AC; Instantaneous Trip: Adjustable; Series: LAL.
Molded Case Circuit Breaker: 250 A Amps, 25kA at 120/240V AC, Adj, Lug, ABC, 3 Poles, 240V AC, Q4 (MPN Q4L3250). Key specifications — Terminal Connection: Lug; Phase Connection: ABC; Max. AIR Rating: 25kA at 120/240V AC; Instantaneous Trip: Adjustable; Series: Q4.
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Molded Case Circuit Breaker: 250 A Amps, 25kA at 120/240V AC, Adj, Lug, ABC, 3 Poles, 240V AC, Q4 (MPN Q4L3250). Key specifications — Terminal Connection: Lug; Phase Connection: ABC; Max. AIR Rating: 25kA at 120/240V AC; Instantaneous Trip: Adjustable; Series: Q4.
Molded Case Circuit Breaker: 400 A Amps, 25kA at 120/240V AC, Adj, Lug, ABC, 3 Poles, 240V AC, Q4 (MPN Q4L3400). Key specifications — Terminal Connection: Lug; Phase Connection: ABC; Max. AIR Rating: 25kA at 120/240V AC; Instantaneous Trip: Adjustable; Series: Q4.
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Molded Case Circuit Breaker: 400 A Amps, 25kA at 120/240V AC, Adj, Lug, ABC, 3 Poles, 240V AC, Q4 (MPN Q4L3400). Key specifications — Terminal Connection: Lug; Phase Connection: ABC; Max. AIR Rating: 25kA at 120/240V AC; Instantaneous Trip: Adjustable; Series: Q4.
Molded Case Circuit Breaker: 250 A Amps, 42kA at 240V AC, Adj, Lug, ABC, 3 Poles, 600V AC, LAL (MPN LAL36250). Key specifications — Terminal Connection: Lug; Phase Connection: ABC; Max. AIR Rating: 42kA at 240V AC; Instantaneous Trip: Adjustable; Series: LAL.
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Molded Case Circuit Breaker: 250 A Amps, 42kA at 240V AC, Adj, Lug, ABC, 3 Poles, 600V AC, LAL (MPN LAL36250). Key specifications — Terminal Connection: Lug; Phase Connection: ABC; Max. AIR Rating: 42kA at 240V AC; Instantaneous Trip: Adjustable; Series: LAL.
Molded Case Circuit Breaker: 300 A Amps, 42kA at 240V AC, Adj, Lug, ABC, 3 Poles, 600V AC, LAL (MPN LAL36300). Key specifications — Terminal Connection: Lug; Phase Connection: ABC; Max. AIR Rating: 42kA at 240V AC; Instantaneous Trip: Adjustable; Series: LAL.
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Molded Case Circuit Breaker: 300 A Amps, 42kA at 240V AC, Adj, Lug, ABC, 3 Poles, 600V AC, LAL (MPN LAL36300). Key specifications — Terminal Connection: Lug; Phase Connection: ABC; Max. AIR Rating: 42kA at 240V AC; Instantaneous Trip: Adjustable; Series: LAL.
Molded Case Circuit Breaker: 400 A Amps, 42kA at 240V AC, Adj, Lug, ABC, 3 Poles, 600V AC, LAL (MPN LAL36400). Key specifications — Terminal Connection: Lug; Phase Connection: ABC; Max. AIR Rating: 42kA at 240V AC; Instantaneous Trip: Adjustable; Series: LAL.
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Molded Case Circuit Breaker: 250 A Amps, 25kA at 120/240V AC, Adj, Lug, Non-Applicable, 2 Poles, Q4 (MPN Q4L2250). Key specifications — Terminal Connection: Lug; Phase Connection: Non-Applicable; Max. AIR Rating: 25kA at 120/240V AC; Instantaneous Trip: Adjustable; Series: Q4.
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