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SQUARE D Panelboard Interior: 42 Spaces, 400 A Amps, Copper, QHB/QOB/QOB-VH, 45 in Ht - Square D NQ Main Lug, Convertible Panel Interiors
SQUARE DSquare D NQ Main Lug, Convertible Panel Interiors

SQUARE D Panelboard Interior: 42 Spaces, 400 A Amps, Copper, QHB/QOB/QOB-VH, 45 in Ht

The Square D NQ Main Lug, Convertible Panel Interiors (MPN NQ42L4C) is a 42-space, 400 A copper-bus panelboard interior for the QHB/QOB/QOB-VH circuit breaker series, measuring 45 in Ht by 10 7/16 in Wd. 3G Electric…

SKU 3G-OTH-772295

Brand
SQUARE D
Item
Panelboard Interior: 42 Spaces, 400 A Amps, Copper, QHB/QOB/QOB-VH, 45 in Ht
Category
Square D NQ Main Lug, Convertible Panel Interiors
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Technical Specifications

SQUARE D
Manufacturer Part Number
NQ42L4C
Type
Copper, QHB/QOB/QOB-VH
Wd
10 7/16 in
Ht
45 in
Amps
400 A
Bus Material
Copper
Circuit Breaker Series
QOB
View Full Spec Sheet

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

Product Description

The Square D NQ Main Lug, Convertible Panel Interiors (MPN NQ42L4C) is a 42-space, 400 A copper-bus panelboard interior for the QHB/QOB/QOB-VH circuit breaker series, measuring 45 in Ht by 10 7/16 in Wd. 3G Electric interprets this demand and delivers it across 14 industrial departments — with specialist depth in controls as an authorised distributor for Square D by Schneider Electric — ensuring you get the right solution, not just a part.

Frequently Asked Questions

What is the Square D NQ42L4C panelboard interior used for?

The Square D NQ42L4C is a 42-space, 400 A copper-bus panelboard interior used to distribute power in commercial and industrial electrical systems. It accepts QHB, QOB, and QOB-VH circuit breakers, making it suitable for lighting, appliance, and power branch circuits. 3G Electric supplies this component globally.

What are the specifications of the Square D NQ42L4C panelboard interior?

The Square D NQ42L4C panelboard interior has 42 spaces, a 400 A ampacity, copper bus material, and accepts QHB/QOB/QOB-VH circuit breakers. It measures 45 in Ht by 10 7/16 in Wd. This Square D by Schneider Electric unit is a main lug, convertible design for flexible installation.

Where to buy the Square D NQ42L4C panelboard interior worldwide?

3G Electric supplies the Square D NQ42L4C panelboard interior worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to order this 42-space, 400 A copper-bus interior for your electrical distribution project.

How to select the correct Square D panelboard interior for my system?

To select the correct Square D panelboard interior, match the bus material (copper or aluminum), ampacity (e.g., 400 A), number of spaces (e.g., 42), and circuit breaker series (QHB/QOB/QOB-VH) to your load requirements. Verify dimensions (45 in Ht by 10 7/16 in Wd) fit your enclosure. 3G Electric can help specify the right solution.

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 nq main lug, convertible panel interiors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Panelboard Interior: 42 Spaces, 600 A Amps, Copper, QHB/QOB/QOB-VH, 45 in Ht, 10 7/16 in Wd (MPN NQ442L6C). Key specifications — Bus Material: Copper; Circuit Breaker Series: QOB-VH.
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Panelboard Interior: 42 Spaces, 600 A Amps, Copper, QHB/QOB/QOB-VH, 45 in Ht, 10 7/16 in Wd (MPN NQ442L6C). Key specifications — Bus Material: Copper; Circuit Breaker Series: QOB-VH.
Panelboard Interior: 30 Spaces, 225 A Amps, Copper, QHB/QOB/QOB-VH, 27 in Ht, 10 7/16 in Wd (MPN NQ430L2C). Key specifications — Bus Material: Copper; Circuit Breaker Series: QHB.
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Panelboard Interior: 30 Spaces, 225 A Amps, Copper, QHB/QOB/QOB-VH, 27 in Ht, 10 7/16 in Wd (MPN NQ430L2C). Key specifications — Bus Material: Copper; Circuit Breaker Series: QHB.
Panelboard Interior: 18 Spaces, 100 A Amps, Aluminum, QHB/QOB/QOB-VH, 21 in Ht, 10 7/16 in Wd (MPN NQ18L1). Key specifications ��— Bus Material: Aluminum; Circuit Breaker Series: QOB-VH.
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Panelboard Interior: 18 Spaces, 100 A Amps, Aluminum, QHB/QOB/QOB-VH, 21 in Ht, 10 7/16 in Wd (MPN NQ18L1). Key specifications — Bus Material: Aluminum; Circuit Breaker Series: QOB-VH.
Panelboard Interior: 18 Spaces, 100 A Amps, Aluminum, QHB/QOB/QOB-VH, 27 in Ht, 10 7/16 in Wd (MPN NQ418L1). Key specifications — Bus Material: Aluminum; Circuit Breaker Series: QOB-VH.
SQUARE D
Panelboard Interior: 18 Spaces, 100 A Amps, Aluminum, QHB/QOB/QOB-VH, 27 in Ht, 10 7/16 in Wd (MPN NQ418L1). Key specifications — Bus Material: Aluminum; Circuit Breaker Series: QOB-VH.
Panelboard Interior: 42 Spaces, 225 A Amps, Copper, QHB/QOB/QOB-VH, 33 in Ht, 10 7/16 in Wd (MPN NQ442L2C). Key specifications — Bus Material: Copper; Circuit Breaker Series: QOB-VH.
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Panelboard Interior: 42 Spaces, 225 A Amps, Copper, QHB/QOB/QOB-VH, 33 in Ht, 10 7/16 in Wd (MPN NQ442L2C). Key specifications — Bus Material: Copper; Circuit Breaker Series: QOB-VH.
Panelboard Interior: 30 Spaces, 225 A Amps, Copper, QHB/QOB/QOB-VH, 27 in Ht, 10 7/16 in Wd (MPN NQ30L2C). Key specifications — Bus Material: Copper; Circuit Breaker Series: QOB.
SQUARE D
Panelboard Interior: 30 Spaces, 225 A Amps, Copper, QHB/QOB/QOB-VH, 27 in Ht, 10 7/16 in Wd (MPN NQ30L2C). Key specifications — Bus Material: Copper; Circuit Breaker Series: QOB.
Panelboard Interior: 42 Spaces, 225 A Amps, Aluminum, QHB/QOB/QOB-VH, 33 in Ht, 10 7/16 in Wd (MPN NQ42L2). Key specifications — Bus Material: Aluminum; Circuit Breaker Series: QOB-VH.
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Panelboard Interior: 42 Spaces, 225 A Amps, Aluminum, QHB/QOB/QOB-VH, 33 in Ht, 10 7/16 in Wd (MPN NQ42L2). Key specifications — Bus Material: Aluminum; Circuit Breaker Series: QOB-VH.
Panelboard Interior: 30 Spaces, 600 A Amps, Copper, QHB/QOB/QOB-VH, 45 in Ht, 10 7/16 in Wd (MPN NQ430L6C). Key specifications — Bus Material: Copper; Circuit Breaker Series: QHB.
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Panelboard Interior: 30 Spaces, 600 A Amps, Copper, QHB/QOB/QOB-VH, 45 in Ht, 10 7/16 in Wd (MPN NQ430L6C). Key specifications — Bus Material: Copper; Circuit Breaker Series: QHB.