Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

SQUARE D NF Main Lug Convertible Panel Interior - Square D NF Main Lug, Convertible Panel Interiors
SQUARE DSquare D NF Main Lug, Convertible Panel Interiors

SQUARE D NF Main Lug Convertible Panel Interior

The Square D NF442L4 is a 42-space, 400 A main lug, convertible panel interior with an aluminum bus, compatible with EDB/EDG/EDJ circuit breakers. Measuring 52 inches high by 10 7/16 inches wide, this Square D NF…

SKU 3G-OTH-732842

Brand
SQUARE D
Item
NF Main Lug Convertible Panel Interior
Category
Square D NF Main Lug, Convertible Panel Interiors
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

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
NF442L4
Type
Aluminum, EDB/EDG/EDJ
Wd
10 7/16 in
Ht
52 in
Amps
400 A
Bus Material
Aluminum
Circuit Breaker Series
EDJ

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 NF442L4 is a 42-space, 400 A main lug, convertible panel interior with an aluminum bus, compatible with EDB/EDG/EDJ circuit breakers. Measuring 52 inches high by 10 7/16 inches wide, this Square D NF series interior supports flexible distribution configurations for industrial electrical systems.

Frequently Asked Questions

What is the Square D NF442L4 panelboard interior used for?

The Square D NF442L4 is a 400 A main lug, convertible panel interior used to distribute power in industrial electrical systems. It supports flexible configurations with EDB/EDG/EDJ circuit breakers and is designed for 42 spaces in a 52-inch enclosure.

What are the specifications of the Square D NF442L4?

The Square D NF442L4 has 42 spaces, 400 A amps, an aluminum bus, and is compatible with EDB/EDG/EDJ circuit breakers. It measures 52 inches high by 10 7/16 inches wide. The bus material is aluminum, and the circuit breaker series is EDJ.

Where to buy the Square D NF442L4 panelboard interior worldwide?

3G Electric supplies the Square D NF442L4 panelboard interior worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 42-space, 400 A aluminum bus interior.

How to select a panelboard interior for an industrial electrical system?

Select a panelboard interior by matching the ampacity, number of spaces, and bus material to your load requirements. The Square D NF442L4 offers 400 A, 42 spaces, and an aluminum bus compatible with EDJ breakers. Verify enclosure dimensions and circuit breaker series for proper fit.

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
Not sure this is the right part? Photo-identify it

SQUARE D Products

3G Electric supplies SQUARE D square d nf main lug, convertible panel interiors. 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

More from SQUARE D

View all SQUARE D parts
This 125 A main lug convertible panel interior features 18 spaces and a copper bus. It is compatible with EDB, EDG, and EDJ circuit breakers. The interior measures 21 inches in height and 10 7/16 inches in width. It is used for branch-circuit distribution in electrical systems
SQUARE D
This 125 A main lug convertible panel interior features 18 spaces and a copper bus. It is compatible with EDB, EDG, and EDJ circuit breakers. The interior measures 21 inches in height and 10 7/16 inches in width. It is used for branch-circuit distribution in electrical systems
This 250 A main lug convertible panel interior features a copper bus and accepts EDB, EDG, and EDJ circuit breakers. It measures 33 inches high by 10 7/16 inches wide. Suitable for use in electrical distribution systems where main lug configurations are required
SQUARE D
This 250 A main lug convertible panel interior features a copper bus and accepts EDB, EDG, and EDJ circuit breakers. It measures 33 inches high by 10 7/16 inches wide. Suitable for use in electrical distribution systems where main lug configurations are required
This 125 A main lug convertible panel interior features a copper bus and is compatible with EDB/EDG/EDJ circuit breakers (EDJ series). It is designed for use in Square D NF-series panelboards for commercial and industrial electrical distribution. Dimensions: 27 in height by 10 7/16 in width
SQUARE D
This 125 A main lug convertible panel interior features a copper bus and is compatible with EDB/EDG/EDJ circuit breakers (EDJ series). It is designed for use in Square D NF-series panelboards for commercial and industrial electrical distribution. Dimensions: 27 in height by 10 7/16 in width
This 250 A main lug convertible panel interior features 42 spaces and copper bus bars. It accepts EDB/EDG/EDJ circuit breakers (EDJ series). Typical applications include power distribution in commercial and industrial electrical systems where flexible configuration is required
SQUARE D
This 250 A main lug convertible panel interior features 42 spaces and copper bus bars. It accepts EDB/EDG/EDJ circuit breakers (EDJ series). Typical applications include power distribution in commercial and industrial electrical systems where flexible configuration is required
This 600 A main lug convertible panel interior features a copper bus and is compatible with EDB/EDG/EDJ circuit breakers. It is designed for use in electrical distribution systems where a main lug configuration is required, allowing for field conversion to main breaker. Dimensions: 46 in height by 10 7/16 in width
SQUARE D
This 600 A main lug convertible panel interior features a copper bus and is compatible with EDB/EDG/EDJ circuit breakers. It is designed for use in electrical distribution systems where a main lug configuration is required, allowing for field conversion to main breaker. Dimensions: 46 in height by 10 7/16 in width
This 125 A main lug convertible panel interior accepts EDB/EDG/EDJ circuit breakers. It features an aluminum bus and measures 27 inches high by 10 7/16 inches wide. Suitable for use in electrical distribution systems for branch circuits in commercial and industrial settings
SQUARE D
This 125 A main lug convertible panel interior accepts EDB/EDG/EDJ circuit breakers. It features an aluminum bus and measures 27 inches high by 10 7/16 inches wide. Suitable for use in electrical distribution systems for branch circuits in commercial and industrial settings
400 A main lug convertible panel interior with copper bus, accepting EDB/EDG/EDJ circuit breakers. Dimensions: 46 in high by 10 7/16 in wide. Suitable for use as a panelboard interior in electrical distribution systems
SQUARE D
400 A main lug convertible panel interior with copper bus, accepting EDB/EDG/EDJ circuit breakers. Dimensions: 46 in high by 10 7/16 in wide. Suitable for use as a panelboard interior in electrical distribution systems
Main lug convertible panel interior for branch circuit distribution in commercial and industrial electrical systems. Rated 250 A with aluminum bus, accepts EDB/EDG/EDJ circuit breakers. Dimensions: 33 in height, 10 7/16 in width
SQUARE D
Main lug convertible panel interior for branch circuit distribution in commercial and industrial electrical systems. Rated 250 A with aluminum bus, accepts EDB/EDG/EDJ circuit breakers. Dimensions: 33 in height, 10 7/16 in width