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SQUARE D NQ Main Lug, Convertible Panel Interior, 400 A, 30 Spaces, Aluminum Bus - Square D NQ Main Lug, Convertible Panel Interiors
SQUARE DSquare D NQ Main Lug, Convertible Panel Interiors

SQUARE D NQ Main Lug, Convertible Panel Interior, 400 A, 30 Spaces, Aluminum Bus

The Square D NQ Main Lug, Convertible Panel Interiors (MPN NQ30L4) is a 30-space, 400 A panelboard interior with an aluminum bus, measuring 45 in Ht by 10 7/16 in Wd. It accepts QHB, QOB, and QOB-VH circuit breakers…

SKU 3G-OTH-772232

Brand
SQUARE D
Item
NQ Main Lug, Convertible Panel Interior, 400 A, 30 Spaces, Aluminum Bus
Part Number
NQ30L4
Category
Square D NQ Main Lug, Convertible Panel Interiors
Available to Order
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Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Compliance & shipping

Hazardous material
Not classified as hazardous
California Prop 65 warning
No warning recorded
Licence required
No licence required
Safety Data Sheet
Not available
Special shipping
Required — additional freight charges may applyThis item requires special shipping, additional charges may apply.

Technical Specifications

SQUARE D
Manufacturer Part Number
NQ30L4
Type
Aluminum, QHB/QOB/QOB-VH
Wd
10 7/16 in
Ht
45 in
Amps
400 A
Depth
5-3/4 in
Phase
Single
Width
10-7/16 in
Height
45 in
UNSPSC
39121103
Voltage
120/240V AC
Standards
CSA Approved; UL Listed
Bus Material
Aluminum Bus Material Bus Material This is the material of the bus bar in the load center or panelboard.
Catalog Page
187
For Use With
NQ Circuit Breakers
Number of Spaces
30
Country of Origin
South Korea (subject to change)
Circuit Breaker Type
Plug In Miniature
Recommended Enclosure
12N640 for Main Breaker; 1D700 for Main Lug
Circuit Breaker Series
QHB; QOB; QOB-VH
Recommended Flush Cover
3TX94 for Main Breaker; 4HHA2 for Main Lug
Recommended Surface Cover
12N641 for Main Breaker; 3TX88 for Main Lug
Recommended Ground Bar Kit
5B716
Short Circuit Current Rating
100000 RMS Symmetrical
Main Circuit Breaker Adapter Kit
4HHA5
Main Circuit Breaker or Main Lug
Convertible; Main Lug

Technical Documents

(1)
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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 NQ30L4) is a 30-space, 400 A panelboard interior with an aluminum bus, measuring 45 in Ht by 10 7/16 in Wd. It accepts QHB, QOB, and QOB-VH circuit breakers, supporting flexible branch-circuit configurations in commercial and industrial power distribution.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Square D NQ30L4 panelboard interior used for?

The Square D NQ30L4 is a 30-space, 400 A main lug convertible panel interior used for branch-circuit power distribution in commercial and industrial electrical systems. It accepts QHB, QOB, and QOB-VH circuit breakers, supporting flexible configurations in lighting, motor, and equipment feeds.

What are the specifications of the Square D NQ30L4 panelboard interior?

The Square D NQ30L4 panelboard interior has 30 spaces, 400 A ampacity, an aluminum bus, and measures 45 in Ht by 10 7/16 in Wd. It accepts QHB, QOB, and QOB-VH circuit breakers. The bus material is aluminum, and the circuit breaker series is QOB-VH.

Where to buy Square D NQ30L4 panelboard interior worldwide?

3G Electric supplies the Square D NQ30L4 panelboard interior 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 30-space, 400 A aluminum-bus interior.

How to select the right Square D panelboard interior for a 400 A system?

To select a Square D panelboard interior for a 400 A system, verify the bus material (aluminum or copper), number of spaces (e.g., 30), and compatible circuit breaker series (QHB, QOB, QOB-VH). The NQ30L4 fits these requirements. Always confirm voltage rating and enclosure type with your electrical design.

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
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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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