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SJKM5-MCCB.jpg

SJKM5 Industrial MCCB Breaker for Short-Circuit Protection

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 details

    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 agnetic 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
    F N H S L N F H S L N F H S L N F H S L N F H S L
    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.