1.Scope of Application

 The small circuit breaker is suitable for AC 50/60Hz,rated voltage 230V/400V for single pole,400V for two,three,four poles,rated current 63A to 125A,used for overload and short circuit protecton in the line,and can also be used as a non-frequent on-off device in the line and lightingl ine under normal conditions.

 The product is of good appearance,small size,light weight,excellent and reliable performance,high breaking capacity,quick trip,and the guide rail,shell and parts are made of high flame retardant and impact resistant plastic,so the service life is long.

 Normal working conditiors:

 a.Atitude not exceading 2000m;

b. Ambient air temperature should be between-5℃ and+40℃,witha 24-hour average not exceeding+35℃.
c. The relative humidity of the surrounding air shall not exceed 50%when the ambient air humidity is +40℃.At lower temperatures,higher relative humidity is permissible,with the maximum average relative humidity in the wettest monthbeing 90%.The average minimum temperature in that month shall be +25℃,and condensation on the product due to temperature changes is allowed
d. In non-explosive environments,the medium must not contan gasesor dust particles that could corrode metals or damage insulation;
e. In places where there is no rain or snow.

2.Technical parameter

 Pour:

Mechanical lifespan:20,000 cycles(on-off)Electrical lifespan:6,000 cycles Dampness-resistance:Class 2(55℃,95%RH)
Wring:Thread type terminal is ueed.The carrying area of the copper wire that
can be coneceted is up to 50mm²for hard wire and 35mm for soft wire.

3.USE AND MAINTENANCE
3.1 The overload characteristic of this series of circuit breakers is set by the manufacturer,and it should not be adjusted at will in use,so as not to affect the performance.
3.2 The temperature of the circuit breaker is 30±5℃.If the circuit breakers are installed in the sealed box,the temperature of the box will increase accordingly.The current is0.8In.
3.3 When the ambient temperature changes,the rated current value is adjusted accordingly.