100% Original Factory Miniature circuit breaker-FTB2G to Nigeria Manufacturers
Exterior and dimensions
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|Rated voltage (V):||230/400|
|Rated current (A)C,D||6,10,16,20,25,32,40,50,63|
|Mechanical and electrical life:||20000|
|Ambient temperature (°C)：||-5 ~ +40|
|Relative air humidity：||no more than 95%|
|Installation：||Used in place without obvious shock and vibration|
With its CT contactor Series Schaltbau is introducing an innovative contactor concept to the market: power contactors in a completely new style and design, specially developed for the enhanced requirements of the railway industry. The outstanding technical feature of the new contactor series is the combination of electromagnetic and permanent-magnetic blowout in one switching device.
This experiment proves that an AC circuit breaker should not be used at mains voltage levels on DC.
You may get away switching 12 or 24 Volts DC but the time delay is too much to maintain safe operating of the MCB at higher voltages.
Severe contact burn in will happen as a DC arc is more difficult to break.
Under the test conditions of 30 Amps AC. the 6 Amp breaker trips immediately.
Under test conditions of 30 Amps DC, It takes 11.5 seconds for a trip.
the later trip of about 6 seconds was due to the bimetallic strip being warm.
Even with the 4700µf capacitor some 100Hz ripple would be present under these load conditions.