Molded сase сircuit breaker with thermal adjustable FMCS are used in a low-voltage distribution and protection against overcurrent,short circuit switchboard equipment as well as single phase-to-earth fault.
Specifics:
CAD files
Molded сase сircuit breaker with thermal adjustable FMC4S 350A
Standards | IEC 60947-2 |
Rated release current In, A | 350 |
Thermal regulating point Ir(xIn) | 0.8/0.9/1.0 |
Rated voltage Un, V | ~690 |
Rated voltage of the insulation Ui, V | 800 |
Number of poles | 3 |
Rated frequency, f, Hz | 50/60 |
Rated operating breaking capacity, Ics, kA | 36 |
Limiting operating breaking capacity, Icu, kA | 50 |
Commutation wear resistance (electric/mechanical) | 1 000/4 000 |
Connecting of additional devices | yes |
Front bus connection | yes |
Rear-mounted bus connection | yes |
Operating position | any |
Altitude above sea level, m | 2000 |
Operating temperature range, °C | -25…+55 |
Storage temperature range, °C | -25…+70 |