SQUARE D Panelboard Main Breaker Kit
The Square D Panelboard Main Breaker Kit (MPN N400M) is a 400-amp, three-phase accessory for Square D L-Frame Panelboards. It features a 400A/L frame size and is compatible with the LHL circuit breaker series. This…
SKU 3G-OTH-722196
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
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Product Description
The Square D Panelboard Main Breaker Kit (MPN N400M) is a 400-amp, three-phase accessory for Square D L-Frame Panelboards. It features a 400A/L frame size and is compatible with the LHL circuit breaker series. This kit includes one screw set for installation.
Frequently Asked Questions
What is the Square D N400M panelboard main breaker kit used for?
The Square D N400M panelboard main breaker kit is used as a 400-amp, three-phase main breaker accessory for Square D L-Frame panelboards. It integrates with the LHL circuit breaker series to provide overcurrent protection and a service-disconnect point in commercial and industrial power-distribution systems.
What are the specifications of the Square D N400M main breaker kit?
The Square D N400M main breaker kit is rated 400 amps, three-phase, with a 400A/L frame size. It is designed for use with Square D L-Frame panelboards and is compatible with the LHL circuit breaker series. The kit includes one screw set for installation.
Where to buy the Square D N400M panelboard main breaker kit worldwide?
3G Electric supplies the Square D N400M panelboard main breaker kit worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this Square D accessory.
How to install the Square D N400M main breaker kit?
Install the Square D N400M main breaker kit by first de-energizing the panelboard. Mount the kit into the designated L-Frame panelboard opening, secure it with the included screw set, and connect the line and load conductors per the manufacturer's wiring diagram. Always follow local electrical codes.
Used in
Common applications for SQUARE DSQUARE D Products
3G Electric supplies SQUARE D square d main breaker kits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
