ALF series Miniature Circuit breaker(MCB)
ALF are intended for protecting distribution and group systems having different loads:
electric appliances, lighting – V characteristic switches;
drives with moderate starting currents (compressor, fan group) - C characteristic switches;
drives with high starting currents (hoisting mechanisms, pumps) - D characteristic switches;
Miniature circuit breaker ALF are recommended for use in electrical distribution panels of residential and public buildings.
DownloadMCB ALF | ||||||
For protection of general power distribution (IEC/EN 60898-1) | ||||||
Poles | 1P | 2P | 3P | 4P | ||
Electrical performance | ||||||
Functions | short circuit protection,overload protection,isolationg,control | |||||
Rated frequency f Hz | 50-60Hz | |||||
Rated working voltage Ue V AC | 230/400 | 400 | ||||
Rated current In A | 6,10,16,20,25,32,40,50,63 | |||||
Rated insulated voltage Ui V | 500 | |||||
Impulse withstand voltage Uimp kV | 4 | |||||
Instantaneous tripping type | ALF | B/C/D | ||||
Rated short circuit Icn(kA) | ALF | 4.5 | ||||
Release type | Thermal magnetic type | |||||
Service life(O~C) | Mechanical | Actual value | 20000 | |||
Standard value | 4000 | |||||
Electrical | Actual value | 8000 | ||||
Standard value | 4000 | |||||
Connection and installation | ||||||
Protectiom degree | IP20 | |||||
Wire mm² | 1~35 | |||||
Working temperature | -5 ～+40℃ | |||||
Resistance to humidity and heat | Class 2 | |||||
Altitude above sea | ≤2000 | |||||
Relative humidity | +20℃ , ≤90% ;+40℃ , ≤50% | |||||
Pollution degree | 2 | |||||
Installation environment | Avoid obvious shock and vibration | |||||
Installation class | Class Ⅱ , Class Ⅲ | |||||
Mounting | DIN35 rail | |||||
Combination with accessories | ||||||
Auxiliary contact | Yes | |||||
Alarm contact | Yes | |||||
Shunt release | Yes | |||||
Undervoltage release | Yes | |||||
Auxiliary contact+Alarm contact | Yes | |||||
Dimensions(mm) (WxHxL) | a | 17.5 | 35 | 52.5 | 70 | |
b | 80.2 | 80.2 | 80.2 | 80.2 | ||
c | 76.5 | 76.5 | 76.5 | 76.5 | ||
Two types of short circuit protection.
Wide range of operating temperatures from –40 to +50° С.
Updated wider engagement lever with improved contact area.
Notches on terminal clamps provide for lowering thermal losses and boosting the mechanical stability of connection.
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