OEM Manufacturer Miniature circuit breaker-FTB3 to Angola Manufacturers


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Model FTB3 high breaking capacity MCB
Number of poles 1P 2P 3P 4P
Rated frequency: AC 50/60Hz
Rated voltage (V) AC 230/400
Rated current (A)      C 6, 10, 16, 20, 25, 32, 40, 50, 63
     D 6, 10, 16, 20, 25, 32, 40
Breaking 40-63A 10
capacity(KA) 6-32A 12
Mechanical and electrical life:                                    20,000 operation
Protection rating:                                           IP20
Installation On symmetrical DIN rail 35mm /Panel Mounting
Connection capacity:                                                                                                  Cross-section of conductors up to 25mm², Cross-section of busbar from 0.8-2mm²,
reversibility of connections
Ambient temperature (°C)                                          -5 - +45  °C
Altitude (m) not higher than 2000m
Relative air humidity no more than 95%
Pollution degree
Weight (g) 116 234 352 472

  • This video is part of a series of experiments I’ve done and is detailed on my site:


    This video shows my new HV MOT Power Supply and with it some experiments using a magnetic field to blow out the arc.
    I show the effect with and without a magnetic field on standard HV AC discharges and a half-wave doubler discharge.
    The half-wave circuit is kind of non-ideal because it’s sort of self extinguishing since the current is intermittent. The idea for using this would be to interrupt a constant DC current, but it shows the concept of the magnetic quench. And the principals here can easily be extended for DC or other waveforms.

    In semiconductor testing, contactor can also refer to the specialised socket that connects the device under test.
    In process industries a contactor is a vessel where two streams interact, for example, air and liquid. See Gas-liquid contactor.

    This video is targeted to blind users.

    Article text available under CC-BY-SA
    Creative Commons image source in video

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