1. Function:
MCCB to distribute electric power and protect circuits and equipment against overload,
undervoltage, and short-circuit faults.
MCCB to infrequently start and control AC motors.
MCCB to protect users against indirect contact.
MCCB to protect electrical installations against insulation faults (fire hazard, etc) .
MCCB used in building and factory.
2.Constructional features :
Thermamagnetic release offers instantaneous trip against short-circuit and long time delay trip against overcurrent.
The residual operating current value can be fixed or adjustable.
The residual operating current protection can be with time-delay or without time-delay.
Various accessories can be attached to the circuit breaker to extend its functions, such as undervoltage release, shunt release,ON/OFF position.
Product Parameter
Model | CM-63 | CM-125 | CM-250 | CM-400 | CM-630 | CM-800 | |
Rated Current |
40, 50, 63 | 63, 80, 100,125 |
160, 180, 200, 225 250 |
225, 250 315, 350 400 |
400, 500 630 |
630, 700 800 |
|
Pole Number | 2P/3P/4P | ||||||
Rated Insulation Voltage Ui | AC/DC 1000V | ||||||
Breaking Capacity (kA) Icu (1cs=75% Icu) |
500V | 25 | 35 | 35 | 35 | 50 | 50 |
750V | 15 | 25 | 25 | 25 | 35 | 5 | |
1000V | 10 | 15 | 15 | 15 | 20 | 20 | |
Mechanical Life (times) | 7000 | 7000 | 7000 | 4000 | 4000 | 2500 | |
Breaking Times (ms) | 20 | ||||||
Rated impact voltage Uimp (KV) | 8 | ||||||
Ultimate breaking capacity Lcu (KV) | 25 | ||||||
Trip type | Thermal-magnetic | ||||||
Ambient temperature | -20ºC---70ºC | ||||||
Altitude | ≤2000M | ||||||
installation | Fixed, plug-in |