Wholesale China SJKM5 Industrial MCCB Breaker Factory - 100A-630A Short-Circuit Protection Suppliers Supplier, Manufacturers
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Wholesale China SJKM5 Industrial MCCB Breaker Factory - 100A-630A Short-Circuit Protection Suppliers Supplier, Manufacturers

Wholesale China SJKM5 Industrial MCCB Breaker Factory - 100A-630A Short-Circuit Protection Suppliers Supplier, Manufacturers

The SJKM5 Molded Case Circuit Breaker (MCCB) is a high-performance solution for 100A-630A applications, offering robust 3P/4P protection. With an impressive 800V insulation and an 8kV impulse withstand capacity, this MCCB is IEC 60947-2 certified, ensuring reliability in various industrial environments. Its 1000V breaking capacity (AC 50/60Hz) with Icu/Ics protection levels makes it an excellent choice for demanding applications. Designed to operate in pollution degree 3 environments up to 40°C, the SJKM5 MCCB adheres to NEMA AB1 standards. Featuring a thermal-magnetic trip system, it provides precise overload and short-circuit protection for 380V-690V industrial systems. This quality circuit breaker is manufactured by leading suppliers in China and is ideal for power distribution panels, manufacturing plants, and commercial installations that require exceptional circuit protection. Choose the SJKM5 MCCB from our factory for durability and isolation capability you can trust
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Product Description

Type Designation
SJKM5-Industrial-MCCB-Breaker-4
  • 1 Manufacturer Code
  • 2 Molded Case Circuit Breaker Code
  • 3 Design Code
  • 4 Frame Size
  • 5 Short-Circuit Breaking Capacity Level 4
  • 6 Operation Method 3
  • 7 Number of Poles 2
  • 8 Trip Unit Method & File Code
  • 9 Function Code 1
Product Display
SJKM5-Industrial-MCCB-Breaker-(3)
SJKM5-Industrial-MCCB-Breaker-(2)
SJKM5-Industrial-MCCB-Breaker-(1)
Characteristic
Rated insulation voltage (V) UI 800
Rated impulse voltage (kV) Uimp 8
Rated working voltage (V) Ue AC 50/60 Hz 690
Applicable for Isolation IEC/EN 60947-2 YES
Application Category A
Pollution Degree IEC 60664-1 3
Technical Parameters
Circuit Breaker
Breaking Capacity Level
Electrical performance complies with IEC 60947-2
Rated current (A) In 40℃
Pole number
Limit breaking capacity (kA rms)
Icu AC 50/60 Hz 220/240V
380/415V
660/690V
800V
1000V
Service breaking capacity (kA rms)
Mechanical electrical Ics %Icu
415V In
440V In/2
In
690V In/2
In
Electrical performance complies with Nema AB1
Breaking capacity (kA rms) AC 50/60 Hz 240V
480V
600V
800V
1000V
Protection and measurement
Short-circuit protection Magnetic protection
Overload/short-circuit protection Thermal magnetic
Electronic
Electronic with neutral protection (off-0.5-1-OSN)
With earth fault protection
With zone selective interlock (ZS1)
Display / l,U,P,F,E measurement / fault current measurement
Options Cabinet door display unit
Operation management
Counter
Historical logs and alarms
Measurement communication
Switch status/control communication
Leakage protection Via Vig leakage protection module
Via Vigirex leakage relay
Installation/Connection
Dimensions and weight
Dimensions (mm) W×H×D Fixed front connection 2/3P
4P
Weight (kg) Fixed front connection 2/3P
4P
Connection
Connection terminals Pole spacing With/without terminal expander
Copper or aluminum cables Cross-sectional area mm²
SJKM5-100 SJKM5-160 SJKM5-250 SJKM5-400 SJKM5-630
FNHSL NFHSL NFHSL NFHSL NFHSL
100 160 250 400 630
3,4 3,4 3,4 3,4 3,4
85 85 100 120 150
36 50 70 100 150
35 42 65 90 130
25 30 50 65 70
8 10 10 15 35
30
15		 85 85 100 120 150
36 50 70 100 150
35 42 65 90 130
25 30 50 65 70
8 10 10 15 35
30
15		 85 85 100 120 150
36 50 70 100 150
35 42 65 90 130
25 30 50 65 70
8 10 10 15 35
30
15		 85 85 100 120 150
36 50 70 100 150
35 42 65 90 130
25 30 50 65 70
8 10 10 15 35
30
25		 85 85 100 120 150
36 50 70 100 150
35 42 65 90 130
25 30 50 65 70
8 10 10 15 35
30
25
100% 100% 100% 100% 100%
50000 40000 20000 15000 15000
30000 20000 10000 7000 7000
50000
30000		 40000
20000		 20000
10000		 12000
6000		 8000
4000
20000
10000		 15000
7500		 10000
5000		 6000
3000		 6000
2000
85 90 100 120 150
35 50 65 90 130
8 20 35 40 35
25
12		 85 90 100 120 150
35 50 65 90 130
8 20 35 40 35
25
12		 85 90 100 120 150
35 50 65 90 130
8 20 35 40 35
25
12		 85 90 100 120 150
35 50 65 90 130
8 20 35 40 35
30
15		 85 90 100 120 150
35 50 65 90 130
8 20 35 40 35
30
15
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█████
█████
█████
█████
█████
█████
█████
█████
█████
█████
█████
█████
█████
105×161×86
140×161×86		 105×161×86
140×161×86		 105×161×86
140×161×86		 140×255×110
185×255×110		 140×255×110
185×255×110
2.05
2.4		 2.2
2.6		 2.4
2.8		 6.05
7.9		 6.2
8.13
35/45mm 35/45mm 35/45mm 45/52.5mm
45/70mm		 45/52.5mm
45/70mm
300 300 300 4×240 4×240
Ordering Instructions

Order Specifications Required from Customers:
a) Product Name: Model Number. Rated Current;
b) Rated Current. Number of Poles;
c) Minimum Order Quantity.

Example:
Order SJKM5-100 3-pole circuit breaker, type F, rated current 100A, quantity 1000 units.
Should be written as: SJKM5-100F/3P, 100A, 1000 units.

Frequently Asked Questions (FAQ)
Q What frame sizes are available for the SJKM5 Industrial MCCB?
The SJKM5 series is available in five frame sizes: SJKM5-100, SJKM5-160, SJKM5-250, SJKM5-400, and SJKM5-630, covering a wide range of rated currents from 100A up to 630A to suit various industrial applications.
Q What is the rated working voltage of the SJKM5 MCCB?
The SJKM5 molded case circuit breaker has a rated working voltage (Ue) of up to 690V AC at 50/60 Hz, with a rated insulation voltage (UI) of 800V and a rated impulse voltage (Uimp) of 8 kV.
Q Which international standards does the SJKM5 MCCB comply with?
The SJKM5 series complies with IEC 60947-2 for electrical performance and isolation requirements, IEC 60664-1 for pollution degree classification, and also meets Nema AB1 standards for breaking capacity, ensuring global compatibility.
Q What pole configurations are supported by the SJKM5 circuit breaker?
The SJKM5 MCCB supports both 3-pole (3P) and 4-pole (4P) configurations across all frame sizes (100A to 630A), making it suitable for three-phase and three-phase with neutral industrial power distribution systems.
Q What types of trip unit protection are available for the SJKM5?
The SJKM5 offers multiple protection options including thermal magnetic protection, electronic trip units, electronic with neutral protection, earth fault protection, and zone selective interlock (ZSI). Optional leakage protection is available via Vig leakage protection module or Vigirex leakage relay.
Q How should I place an order for the SJKM5 molded case circuit breaker?
To place an order, please specify the product name and model number, rated current, number of poles, and minimum order quantity. For example, for a 3-pole SJKM5-100 type F with 100A rated current and 1000 units, the order should be written as: SJKM5-100F/3P, 100A, 1000 units.

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