• Booth: J9-8

All is to Take the Customer as The center

Zhejiang MKM Electrical Co.,LTD was established in 1996, persisting in integrating scientific research,production,marketing and service as the whole,which is one of the most professional manufacturers of low-voltage electrical equipment with main products as circuit breakers in China.

All of our products are CE certified,and some have gotten KEM


  • Moulded Case Circuit breaker-MM4
      MM4 intelligent type MCCB is suitable for the circuit of AC 50/60HZ,rated insulating voltage 750V, rated working voltage below 690V, rated current is 16A -630A for distributing electric energy, infrequently OFF/ON under normal condition.


  • Main technical parameter:
    Type MM4-100 MM4-160 MM4-250 MM4-400 MM4-630
    Main technical parameter(comply with GB14048.2/IEC60947-2)
    Rated Current(A) 100 160 250 400 630
    Number Pole 3,4 3,4 3,4 3,4 3,4
    Rated Insualtion
    voltage V
    850 850 850 850 850
    Rated working
    voltage V
    690 690 690 690 690
    Testing life
    (No load/0.5In load)
    8500/1300 7000/900 7000/900 4000/800 4000/800
    Rated impulse
    withstand voltage KV
    7.5 7.5 7.5 7.5 7.5
    Ultimate short circuit
    breaking capacity ICU
    220V/230V 75 80 75 80 75 80 80 90 80 90
    380V/415V 25 45 30 45 30 45 42 60 42 60
    400V 25 40 30 40 30 40 40 55 40 55
    500V 18 30 25 30 25 30 30 45 30 45
    600V 7 9 7 9 8 10 10 18 10 18
    Service short circuit
    breaking capacity ICS
    100% 100% 100% 100% 100%
    Usage sort A A A A A
    Protect Ir form over-current 40-100 64-160 100-250 160-400 250-630
    Instantaneous times 2-10 2-10 2-10 2-10 2-10
    Three phrase
    unbalance protection
    Aim at the protection of motor and depend on consumer's advises

    Working Conditions:

    1.Not over altitude 2000m.

    2.Amibient temperature is between -25ºC and +40ºC.

    3.Working in the medium which not any explosive,not enough dielectric to corrode metal,no gas to damage insulation and electric conduction dust.

    4.Working in the place would not be invaded by rain and snow.

    5.Pollution degree III.

    6.Mounting type III.
  • ATS Automatic Transfer Switch-MQ2
    Automatic transfer switch is suitable for power supply system with rated insulating voltage is AC 800A,rated working voltage is AC690V, and below DC250V,and AC 50HZ/60HZ,rated working current is 20A-5000A of two-path....

  • Environment conditions for operation and installation:

    1.Ambient temperatures:-5ºC-+40ºC, and average temperature in 24 hours below +35ºC(except for special orders)
    2.Elevation of installation site:≤2000m
    3.Pollution protection: 3 grade
    4.The breakers used on ships and in humid tropical area can work normally without influence of humid air,salt fog and mildew.
    5.The breakers used on ships can operate reliably under normal vibration.
    6.The breaker should be installed according to stipulations on operating manual.For breakers in common use,the vertical gradient is not more than 5ºC ,for that used on ships,the vertical gradient is not more than 22.5ºC.
    7.The breaker should be put in the place where there is not any explosive medium and conductive dust and no gas which would corrode metal or destroy the insulation.

    Technology Parameter:
    Type M2 I type M2 II type M3 I type M3 II type
    Rated working current 20A-500A 20A-500A 20A-500A 20A-5000A
    Rated limit short circuit current(according to the current degree) 12.5KA-30KA 12.5KA-25KA 12.5KA-25KA 12.5KA-25KA
    Short time stand current(according to the current degree) 5-12KA 5-10KA 5-12KA 5-50KA
    Transfer time(exclude the specia input delay) 0.1-0.2S 0.1-0.2S 0.1-0.2S 0.1-0.5S
    With controller or not No Yes No Yes
    Automatically start the generator No Yes No Yes
    Comtrol mode Automatic switch with restore
    Automatic switch without restore
    Automatic switch with restore Automatic switch with restore Automatic switch with restore
    Connection way Front panel connection Front panel connection Front panel connection
    Back panel connection
    Front panel connection
    Rated working voltage AC 400V/690V DC125V/250V
    Rated control voltage AC 220V
    Rated working requency 50/60HZ
    connection and disconnection capability AC-33B(10le ON 8le OFF)cosF=0.35 DC-33B 1.1le ON L/R=1MS
    Electric class PC Class
    Usage sort AC-33B DC-33B
    Test mode Power network-power network, power network--generator
    Life Electric life 2500 Number Mechanism 10000 Number
    Auxiliary switch capacity AC 100V 5A AC 220C 2.5A DC 100V 0.5A
    Accessory Protection cover(630A...)Manual specification,product certificate,Credit card,Manual handle
    Number of pole 2.3.4
  • Miniature Circuit breaker-MM5
      MM5 mini circuit breaker are adopted by high fire-resistant an shockproof plastics.It mainly used in the building office,house and similiar building for illumination at Ac 50HZ/60HZ,rated voltage below 400V, rated current 6A-63A.

  • Features:
    Rated current(A) Type(poles) Voltage(V) Breaking capability(A)
     1 To 40 1P 230 6000
     1 To 40 2,3,4P 400 6000
    50 To 63 1P 230 4500
    50 To 63 2,3,4P 400 4500
    Time Delay 1.13In ≥1 h non-trip0
    1.45In <1 h trip
    2.55In 1S<60S trip
    Instantaneous C type5In≥0.1S non-trip;Dtype10In<0.1S trip
    C ype10In<0.1S trip;Dtype:20In<0.1s Trip

    Protection Features:
    Protection features rated temperature:30ºC
    Rated voltage:AC 230V/400V
    Rated current MM5-63(C):(1,2,3,4,5)6,10,16,20,25,32,40,50,63A
    Electric life is not lower than 6000 times
    Mechanism life is not lower than 20000 times
    Hot and humid test:2 kinds (relative humid 95% in 55 ºC)
    Weight(g) 1P 2P 3P 4P
    102 208 308 408

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