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This is the peak current a contactor can withstand during a short circuit. The provides formulas and tables correlating Icm with the circuit breaker’s limiting current.
The standard defines specific categories that dictate how a contactor handles inrush currents and breaking duties.
When you download the PDF, you will find it split into two main documents:
Non-inductive or slightly inductive loads (e.g., resistance furnaces).
This is the peak current a contactor can withstand during a short circuit. The provides formulas and tables correlating Icm with the circuit breaker’s limiting current.
The standard defines specific categories that dictate how a contactor handles inrush currents and breaking duties. iec 60947-4 pdf
When you download the PDF, you will find it split into two main documents: This is the peak current a contactor can
Non-inductive or slightly inductive loads (e.g., resistance furnaces). iec 60947-4 pdf