Meba main switch MBI31 125 

Protection and control of circuits against overloads and short-circuits  in lighting distribution system industry, commerce and dwelling, and  electric motors.Meba main switch MBI31 125  are also used in turning on or off the electric apparatus and lighting circuit under the normal condition.

Feature: protective grade(up to IP20), high breaking capacity, reliable sensitive action, convenient, multiple assembling, long life etc.

Meba main switch MBI31 125

Technical parameters:

  • Pole No: 1,2,3,4
  • Rated current(A): 16,25,40,63,80,100,125A
  • Rated voltage: 230/400V AC
  • Rated frequency: 50/60Hz
  • Rated short-circuit making capacity: 3000A
  • Rated withstand current: 1500A within 1sec
  • Electro-mechanical endurance: 10000 cycles
  • Connection capacity: Rigid conductor 35mm


Rated impulse withstand voltage(1.2/50)Uim 4000V
Rated short-time withstand current  lcw 12le,1s
Rated short circuit making capacity 20le,t=0.1s
Dielectric test voltage at ind.Freq.for 1 min 2.5KV
Insulation voltage Ui 500V
Electrical life 1500t
Mechanicai life 8500t
Protection degree IP20
Ambient temperature(with daily average≤35°c) -5~+40°c

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