Page 87 - 温州西卡电器有限公司（WENZHOU XIKA ELECTRICAL CO.,LTD.）

Wenzhou Xika
Electrical Co.,Ltd.

> IC65 Series miniature circuit breaker
Standard: IEC60898

> General
MCB is applicable to electric circuits with rated voltage 230/400V AC, frequency 50/60Hz and rated current up
to 125Amp. The product provides protection against voerload and short circuit to electric circuits and equip-
ments in household and commercial installation. MCB is also used as non-frequent changeover of electric
circuits.

> Special tips:
1. MCB is for non-professional operation by those untrained, and no maintenance is required
2. Satisfying conditions and applications as mentioned above,MCB with “ON-OFF” indicating device is con-
sidered suitable for isolation function.
3. Particular devices such as surge protective devices,surge arrester etc are recommended to install at up-
stream line to MCB as precaution against potential surge voltage and current occurring at its power input
side.
4. Appropriate tripping curve being chosen and properly installed, MCB trips and switches off its protected
circuit in case of fault, and thus provides protection against electric shock.
5. B,C,D tripping curve(see graphics 1):

> B cure:
Instantaneous tripping current:5In
Instantaneous non-tripping current:3In
Application:provides protection to circuits with
low inductive load
> C curve:
Instantaneous tripping current:10In
Instantaneous non-tripping current:5In
Application:provides protection to circuits with inductive load
or to highly inductive illumination system
> D curve:
Instantaneous tripping current:20In
Instantaneous non-tripping current:10In
Application:provides protection to circuits with high inductive load or
electric distribution system with high surge current
6. Ambient temperature and current rating curve

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