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CHINT Surge protectors NU6-11 15KV 4P home lightning / surge protector / arrester
Temperature:-5 degree c-+40 degree c; the average value within 24h shall not exceed +35 degree c;
for the circuit breaker with themo-magnetic relaese,+40 degree c is set to be the standard temperature for ratings,special utilization.
Pollution grade:Grade 3
Air conditions:at mouting sit, relative humidity not exceed 50% at the max temperature of +40degree c,higher relative humidity is allowable under lower temperature.for example,RH could be 90% at +20 degree c,special measures should be takern to occurence of dews.