Enclosed Circuit Breaker · 600A, 3-Pole, 4-Wire, 35kA at 480V, Type 1 · Fully Assembled with Neutral Terminal · Noark Electrical E01-4BM4S600T3L
Fully assembled enclosed circuit breaker with a 600A Noark M4S thermal-magnetic MCCB in a Type 1 indoor enclosure. Built for 3-phase, 4-wire distribution where a factory-assembled disconnect with neutral terminal helps reduce field assembly time.
What this product is for
This fully assembled enclosed circuit breaker is used as a high-amperage disconnect and overcurrent protection device in commercial and industrial power distribution systems. It combines a Noark M4S 600A, 3-pole thermal-magnetic moulded case circuit breaker with a factory enclosure and neutral terminal for 3-phase, 4-wire installations.
Use for
Use for main disconnects, large feeders, distribution equipment, service entrance equipment where permitted by design, and industrial control or power systems requiring a 600A enclosed breaker. It is intended for indoor locations with a Type 1 enclosure.
Avoid for
Avoid using this enclosure in washdown, corrosive, dusty, or outdoor locations where Type 12 or Type 3R protection is required. Also avoid applications that need a higher interrupting rating than 35kA at 480V or a different pole/wire configuration.
Best for
Best for contractors and panel builders who want a factory-assembled enclosed breaker instead of sourcing the breaker, enclosure, and neutral components separately. This can help simplify ordering, coordination, and installation planning on larger distribution jobs.
Installed in
Typically installed in electrical rooms, mechanical rooms, commercial service areas, industrial facilities, and indoor distribution spaces. The Type 1 steel enclosure is intended for general indoor use.
Why this product exists
This product exists to provide a ready-to-install enclosed breaker solution for higher-amperage systems up to 600V AC. Compared with field-built assemblies, a factory-configured unit can reduce parts matching issues and save labour during installation.
Compared with similar products
Compared with a bare MCCB, this unit adds the enclosure and neutral terminal needed for a 3-pole, 4-wire application. Compared with higher-series enclosed breakers, this M4S version is the standard interrupting option in the Noark enclosed breaker range at 35kA at 480V, making it suitable where available fault current does not require the higher 65kA or 100kA options. As a rule of thumb, always confirm available fault current and coordination before selecting an enclosed breaker. Actual suitability depends on system design, utility contribution, conductor length, transformer size, and local electrical code.
Specifications
- Brand: Noark Electrical
- Manufacturer part number: E01-4BM4S600T3L
- Product type: Fully assembled enclosed circuit breaker
- Breaker included: M4S600T3L
- Current rating: 600A
- Poles: 3-pole
- System configuration: 3-phase, 4-wire
- Voltage rating: Up to 600V AC
- Interrupting rating: 35kA at 480V
- Trip type: Thermal-magnetic
- Enclosure type: Type 1 / NEMA 1, indoor
- Neutral terminal: 2-hole neutral terminal included
- Certification: UL 489 listed, CSA/UL referenced in market listings
- Enclosure dimensions for 600A Type 1: approximately 12 in W x 32 in H (304 x 813 mm); additional depth and mounting details should be confirmed from manufacturer documentation before layout or retrofit work
- BrandNoark Electrical
- Warranty5 year
- Electrical
- Poles3 Pole
- Amps600 A
- Voltage208 V
- Interrupt Rating (AIC)50 kA
- Physical
- Enclosure DimensionsH49.2" x W22" x D7"
- Breaker TypeMoulded Case Circuit Breakers (MCCB)
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 
(Contractor Accounts)
Standard Shipping-Free on orders over $249 in Metropolitan Areas / $499 in Rural Areas
(All Other Accounts)
Standard Shipping-Free on orders over $499
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
Burnaby Warehouse 5608 Goring St Burnaby, V5B 3A3, BC
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
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.




