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Home > Circuit Breaker > Wholesale SJKM5 Industrial MCCB Breaker for Short-Circuit Protection Manufacturers, Factories
Wholesale SJKM5 Industrial MCCB Breaker for Short-Circuit Protection Manufacturers, Factories
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Wholesale SJKM5 Industrial MCCB Breaker for Short-Circuit Protection Manufacturers, Factories

Wholesale SJKM5 Industrial MCCB Breaker for Short-Circuit Protection Manufacturers, Factories

SJKM5 Molded Case Circuit Breaker (MCCB) delivers robust 3P/4P protection for 100A-630A applications, featuring 800V insulation and 8kV impulse withstand. This IEC 60947-2 certified MCCB offers 1000V breaking capacity (AC 50/60Hz) with Icu/Ics protection levels. The Molded Case Circuit Breaker operates reliably in pollution degree 3 environments at 40°C, meeting NEMA AB1 standards. Its thermal-magnetic trip system ensures precise overload and short-circuit protection for 380V-690V industrial systems. The SJKM5 MCCB combines isolation capability with durable construction, making it ideal for power distribution panels, manufacturing plants, and commercial installations requiring high-performance circuit protection.

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Product Description

Type Designation
Type Designation Chart
1Manufacturer Code
2Molded Case Circuit Breaker Code
3Design Code
4Frame Size
5Short-Circuit Breaking Capacity Level 4
6Operation method 3
7Number of Poles 2
8Trip Unit Method & File Code
9Function Code 1
Product Display
Industrial MCCB Breaker View 1 Industrial MCCB Breaker View 2 Industrial MCCB Breaker View 3
Characteristic
Rated insulation voltage (V)UI800
Rated impulse voltage (kV)Uimp8
Rated working voltage (V)Ue (AC 50/60 Hz)690
Applicable for IsolationIEC/EN 60947-2YES
Application Category-A
Pollution DegreeIEC 60664-13
Technical Parameters
Model SJKM5-100 SJKM5-160 SJKM5-250 SJKM5-400 SJKM5-630
Rated Current (A) 100 160 250 400 630
Pole Number 3, 4 3, 4 3, 4 3, 4 3, 4
Mechanical Life 50000 40000 20000 15000 15000
Electrical Life 30000 20000 10000 7000 7000
Dimensions (mm) W×H×D 105×161×86 105×161×86 105×161×86 140×255×110 140×255×110
Weight (kg) Front Connection 2.05 / 2.4 2.2 / 2.6 2.4 / 2.8 6.05 / 7.9 6.2 / 8.13
Ordering Instructions
Order Specifications Required from Customers:
  • Product Name: Model Number, Rated Current
  • Rated Current, Number of Poles
  • Minimum Order Quantity
Example:
Order SJKM5-100 3-pole circuit breaker, type F, rated current 100A, quantity 1000 units.
Written as: SJKM5-100F/3P, 100A, 1000 units.
FAQ
What is the SJKM5 Molded Case Circuit Breaker (MCCB) used for?
The SJKM5 series is designed to provide overcurrent and short-circuit protection for electrical circuits and equipment in industrial and commercial power distribution systems.
How many poles are available for the SJKM5 series?
The SJKM5 MCCB is available in both 3-pole (3P) and 4-pole (4P) configurations to meet different wiring requirements.
What standards do these circuit breakers comply with?
Our products comply with international electrical standards, including IEC/EN 60947-2 for circuit breakers and IEC 60664-1 for pollution degree compliance.
Is the SJKM5 series suitable for isolation?
Yes, the SJKM5 series is applicable for isolation according to IEC/EN 60947-2 standards, ensuring safe maintenance and operation.
What is the maximum rated current for this series?
The SJKM5 series offers various frame sizes with rated currents ranging from 100A up to 630A.
What are the installation options for these MCCBs?
They support fixed front connections and are compatible with 35/45mm or 45/70mm mounting spacing depending on the specific model and frame size.

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