Circuit Breaker Enclosure · 400A 600V · NEMA 1 Indoor for M3 Frame 300-400A Breakers · Noark Electrical X400-600TYPE 1
X400-600TYPE 1
1222
– Loyalty Rewards
:
from
to
Clear
Clear
Neutral terminal assembly · 400A · 2-hole lug for M3/M4 enclosed breakers · Noark Electrical NT-3B
SKU: NT-3B
400A neutral terminal assembly for Noark enclosed breaker systems, typically used where a neutral termination is required in 3P-4W or similar panel configurations. NT-3B is identified in Noark enclosed breaker literature as the 400A, 2-hole neutral terminal option for M3 and M4 applications; confirm enclosure and breaker compatibility before ordering.
What this product is for
The Noark Electrical NT-3B is a neutral terminal assembly used in enclosed circuit breaker builds where a dedicated neutral termination point is required. It is listed by Noark as the 400A neutral terminal option and is associated with M3 and M4 enclosed breaker selections.
Use for
Use for commercial and industrial enclosed breaker assemblies, panel builds, and replacement or retrofit work where a 400A neutral terminal is specified by the equipment schedule. It is suited to applications that require a neutral connection in 3-pole, 4-wire configurations, subject to the enclosure and breaker design.
Avoid for
Avoid using this neutral terminal where the breaker enclosure does not call for the NT-3B option, where ampacity exceeds 400A, or where conductor termination requirements do not match the lug style provided. Do not assume cross-compatibility with other breaker brands or non-Noark assemblies.
Best for
Best for electricians, panel shops, and contractors ordering Noark enclosed breaker accessories by exact catalogue reference. This is the right choice when the bill of materials or enclosure selection guide specifically calls for NT-3B.
Installed in
Typically installed inside enclosed breaker equipment and distribution assemblies rather than as a stand-alone field device. Commonly used in commercial service equipment, industrial distribution sections, and custom panel builds where a neutral landing point is required.
Why this product exists
It provides a matched neutral termination option within the Noark enclosed breaker system, helping maintain a clean and code-aligned assembly using manufacturer-selected accessories. For buyers, this reduces guesswork compared with sourcing a generic neutral lug separately.
Compared with similar products
Compared with lower-rated neutral terminal options, NT-3B is the 400A selection in Noark's enclosed breaker catalogue. Catalogue references indicate the letter code differentiates lug configuration, with NT-3B shown as the 2-hole version, while other NT-series options cover different ampere ratings and terminal formats. Always match the neutral kit to the breaker frame and enclosure schedule.
Specifications
- Manufacturer part number: NT-3B
- Brand: Noark Electrical
- Product type: Neutral terminal assembly
- Current rating: 400A
- Terminal configuration: 2-hole lug style per Noark enclosed breaker catalogue
- System compatibility: Associated with Noark M3 and M4 enclosed breaker selections
- Application: Enclosed circuit breaker neutral termination
- Typical use: Commercial and industrial distribution equipment
- Buying note: Verify conductor range, hole spacing, and enclosure compatibility on the project submittal before purchase
Minimum Order $20
We accept the following payment methods:
Credit Card can offer cardholders convenience, security, rewards, and the opportunity to build a healthy credit history.
Click here for Contractor Cash Account
Trade Credit is a standard financing option for contractors and construction companies to obtain supplies and keep their projects moving. We offer 30-day credit terms to trade contractors on approved applications only.
Click here for Contractor Credit Account 
Standard Shipping-Free on orders over $500 in Metropolitan Areas / Subject to $750 in Rural Areas.
Minimum Order Is $20
Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
- PVC and EMT Pipe
- Wire and Cable
- Items over 48 inches in length
Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.
Shipping Options:
- A courier can deliver to your home, office, or your job site
- Pick up at local depot near you (applies to the following locations)
Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB
Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.
THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS
- We cannot deliver to P.O. boxes.
- A signature may be required for shipments over $500.
- No weekend delivery.
- Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.
Standard Shipping cost on orders less than $499
Total shipping cost = "Per Shipment" cost + "Per Item" cost. The "per item" cost is listed in terms of price per pound.
Product Group | Per Shipment* | Per Item |
|---|---|---|
Boxes | $6.99 | $1.49/lb |
Conduit & Raceway | $149.99 | $2.49/lb |
Connectors & Fittings | $5.99 | $1.19/lb |
Data & Structured Home | $5.99 | $1.19/lb |
Distribution Equipment | $5.99 | $1.19/lb |
Emergency Lighting | $6.99 | $1.49/lb |
Heating & Ventilation | $6.99 | $1.49/lb |
Lighting Controls | $5.99 | $1.19/lb |
Lighting Indoor | $6.99 | $1.49/lb |
Lighting Outdoor | $6.99 | $1.49/lb |
Tools | $4.99 | $.99/lb |
Wire & Cable | $49.99 | $2.29/lb |
Wiring Devices | $5.99 | $1.19/lb |
Any combination of the above items | Highest applicable per-shipment charge | As above |
Effective Date: August, 15, 1998(Updated August 2026)
At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:
Returns
Defective Items:
- If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
- To initiate a return, please contact our customer service team with your order number and a description of the defect.
Non-Defective Items:
- We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.
Return Process
Authorization:
- Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
- Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.
Shipping:
- Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.
Condition:
- Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.
Refunds
- Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
- Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.
Related products
Available For Back-Order- Factory Stock in Ontario
Circuit Breaker Enclosure · 400A, 600V AC · NEMA 12 for M3 Frame 300–400A Breakers · Noark Electrical X400-600TYPE 12
X400-600TYPE 12
1 In Ontario Factory Warehouse As Of Sep 11th 20261565 – Loyalty Rewards- Factory Stock in Ontario
Circuit Breaker Enclosure · 400A 600V · NEMA 3R for M3 Frame Breakers · Noark Electrical X400-600TYPE 3R
X400-600TYPE 3R
7 In Ontario Factory Warehouse As Of Sep 11th 20261565 – Loyalty Rewards
