Miniature circuit breakers

They are applicable to the circuit with rated voltage of up to 400V and rated current of up to 125A to provide overcurrent protection for line facilities and electrical equipment in the buildings and similar places or for infrequent make-break operation

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Description

SIWOB series MCB

Scope of application

They are applicable to the circuit with rated voltage of up to 400V and rated current of up to 125A to provide overcurrent protection for line facilities and electrical equipment in the buildings and similar places or for infrequent make-break operation

Work environment in use and installation conditions

Work environment in use and installation conditions

The altitude of installation site shouId not be more than 2,000m;

The ambient air temperature is -5℃ - +40℃, and the average temperature within 24h shouId be not higher than +35℃,

When the maximum temperature is +40℃, the air relative humidity is not higher than 50%, and a higher relative humidity can be tolerable at relatively low temperature，for example，the relative humidity is 90% at +20℃;

Pollution degree 2 (i.e.，”There is non-conductive pollution under normal circumstances , but transient conductivity is taken into consideration due to accidental condensation”),

Vertical installation, error is ±5°

Terminal electrical equipment is installed on TH35-7 mounting rails

SIWOB1 miniature circuit-breakers

Model description