028 3742 1888
028 3742 1888

ML7-63 Series Miniature Circuit Breaker

  • Application.

    ML7-63 hight switch-off ability miniature circuit breaker is applicable to a line of AC 50/60Hz, rated voltage 230/400V and rated current up to 63A, used for overload and short circuitprotection. It can also be used for infrequent line conversion under the normal condition.Thebreaker is applicable to industrial enterprise, commercially district, high-rise building and dwell-ing house. It conforms with The standards of IEC60898
ml7 63
ML7-63 1P
ml7 63 2p
ML7-60 2P
ml7 63 3p
ML7-63 3P
mcb ml7 63
mcb ml7 63


1. Main technical Parameter.


Type ML7-63
Pole 1P 2P 3P 4P
Weight(kg) 0.1 0.2 0.3 0.4
Rated current (A) 1,2,3,4,6,10,16,20,25,32,40,50,63
Rated voltage(V) 240 415
Type of instantaneous release B,C,D
Triping Device Thermal-coil magnetic
Rated short circuit breaking capacity Icn(KA) 10
Life (times) 1-32A Electric life 8000
Mechanical life 20000
Operation frequency 240 times per hour
40-63A Electric life 8000
Mechanical life 20000
Operation frequency 120     mes per hour



2. Applicable conducting wire.


Rated current(A) Nominal cross section of wire mm2
1-6A 1
10A 1.5
16,20A 2.5
25A 4
32A 6
40,50A 10
63A 16


3.The over-current protection property.




Initial Status







30±2oC Cold position 1.13In t≥1h Non-release -

Carried out

immediately after

previous test

1.45In t<1h Release -
Cold position 2.55In




Current smoothly

rises to specified

value within 5s

Cold position 2.55In



-5~+40oC Cold position 3In t≥0.1s Non-release Type B
Cold position 5In t<0.1s Release Type B
Cold position 5In t≥0.1s Non-release Type C
Cold position 10In t<0.1s Release Type C
Cold position 10In t≥0.1s Non-release Type D
Cold position 20In t<0.1s Release Type D




mcb ml7 63 dimension
mcb ml7 63 dimension


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