SQUARE D Panelboard Interior: 30 Spaces, 400 A Amps, Aluminum, QHB/QOB/QOB-VH, 45 in Ht
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
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
Need installation or engineering help?
Ask a question
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.
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 DSQUARE 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.
