
Product Description:
NOARK Ex9M4E Enclosed Breakers offer high-current protection from 400–600A in pre-wired NEMA-rated enclosures. Built for heavy-duty industrial power systems, these breakers are UL489-listed and engineered to handle demanding feeder and main disconnect requirements.
Related Links
-
Best Price Guarantee
100,000+ ProductsQuality Checked - Free ShippingOn Qualifying Orders
- OEM/ VolumeDiscounts Available
- Product WarrantyQuality Guaranteed
- Have a question?Give us a call
Product Number | Product Details | Price | Stock Status |
Quantity
Add To Cart
|
---|---|---|---|---|
400A NOARK |
$4,512.52 |
In Stock
|
||
400A NOARK |
$4,512.52 |
In Stock
|
||
400A NOARK |
$4,332.52 |
In Stock
|
||
400A NOARK |
$4,832.52 |
In Stock
|
||
400A NOARK |
$4,832.52 |
In Stock
|
||
400A NOARK |
$4,652.52 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3RXNM4H600T3L |
$4,512.81 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3RXNM4H500T3L |
$4,512.52 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3RXNM4N600T3L |
$3,765.22 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3RXNM4N500T3L |
$3,765.22 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3RXNM4N400T3L |
$3,765.22 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3RXNM4S600T3L |
$3,564.96 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3RXNM4S500T3L |
$3,564.96 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3RXNM4S400T3L |
$3,564.96 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Neutral pole with 100% protection, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3R4BM4H600T3L |
$4,832.81 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Neutral pole with 100% protection, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3R4BM4H500T3L |
$4,832.52 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Neutral pole with 100% protection, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3R4BM4N600T3L |
$4,085.22 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Neutral pole with 100% protection, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3R4BM4N500T3L |
$4,085.22 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Neutral pole with 100% protection, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3R4BM4N400T3L |
$4,085.22 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Neutral pole with 100% protection, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3R4BM4S600T3L |
$3,884.96 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Neutral pole with 100% protection, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3R4BM4S500T3L |
$3,884.96 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Neutral pole with 100% protection, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 3R, equivalent to E3R4BM4S400T3L |
$3,884.96 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E12XNM4H600T3L |
$4,512.81 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E12XNM4H500T3L |
$4,512.52 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E12XNM4N600T3L |
$3,765.22 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E12XNM4N500T3L |
$3,765.22 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E12XNM4N400T3L |
$3,765.22 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E12XNM4S600T3L |
$3,564.96 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E12XNM4S500T3L |
$3,564.96 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E12XNM4S400T3L |
$3,564.96 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Neutral pole with 100% protection, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E124BM4H600T3L |
$4,832.81 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Neutral pole with 100% protection, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E124BM4H500T3L |
$4,832.52 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Neutral pole with 100% protection, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E124BM4N600T3L |
$4,085.22 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Neutral pole with 100% protection, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E124BM4N500T3L |
$4,085.22 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Neutral pole with 100% protection, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E124BM4N400T3L |
$4,085.22 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Neutral pole with 100% protection, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E124BM4S600T3L |
$3,884.96 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Neutral pole with 100% protection, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E124BM4S500T3L |
$3,884.96 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Neutral pole with 100% protection, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 12, equivalent to E124BM4S400T3L |
$3,884.96 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E01XNM4H600T3L |
$4,332.81 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E01XNM4H500T3L |
$4,332.52 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E01XNM4N600T3L |
$3,585.22 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E01XNM4N500T3L |
$3,585.22 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E01XNM4N400T3L |
$3,585.22 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E01XNM4S600T3L |
$3,384.96 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E01XNM4S500T3L |
$3,384.96 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (3-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E01XNM4S400T3L |
$3,384.96 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Neutral pole with 100% protection, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E014BM4H600T3L |
$4,652.81 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Neutral pole with 100% protection, Interrupting capacity: 50kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E014BM4H500T3L |
$4,652.52 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Neutral pole with 100% protection, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E014BM4N600T3L |
$3,905.22 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Neutral pole with 100% protection, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E014BM4N500T3L |
$3,905.22 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Neutral pole with 100% protection, Interrupting capacity: 30kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E014BM4N400T3L |
$3,905.22 |
In Stock
|
||
600A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 600A, Neutral pole with 100% protection, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E014BM4S600T3L |
$3,704.96 |
In Stock
|
||
500A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 500A, Neutral pole with 100% protection, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E014BM4S500T3L |
$3,704.96 |
In Stock
|
||
400A NOARK Enclosed Moulded Case Circuit Breaker (MCCB), UL 489 listed, Ex9M4 series, 3-poles (3P3d), Rated current: 400A, Neutral pole with 100% protection, Interrupting capacity: 22kA (600Vac), Lugs on both load and line sides (4-wires), Thermal-Magnetic (adjustable) (AT/AM (Adjustable Thermal / Adjustable Magnetic)), Trip unit: NEMA 1, equivalent to E014BM4S400T3L |
$3,704.96 |
In Stock
|