Number of Ringmaster operating cycles.
Mechanical
Ring switch (main) 5 000
Ring switch (earth) 1 000
Circuit breaker (main) 2 000
Circuit breaker (earth) 1 000
Electrical
Circuit breaker (at rated short circuit breaking current) 10
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Number of Ringmaster operating cycles.
Mechanical
Ring switch (main) 5 000
Ring switch (earth) 1 000
Circuit breaker (main) 2 000
Circuit breaker (earth) 1 000
Electrical
Circuit breaker (at rated short circuit breaking current) 10