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Storage conditions Masterpact NW


The instruction manual for the Masterpact NW contains the following information on storage: "Storage conditions : -40°C to +85°C for a Masterpact device without its control unit -25°C to +85°C for the control unit Extreme atmospheric conditions for Masterpact are : According IEC 68-2-30 : damp heat (temperature +55°C, relative humidity 95% We do send breakers with contacts in the OPEN position but there is no specific recommendations on this point.
In addition of the first reply and that for ambient temperature (20-25°) we generally consider that humidity conditions for storage(meaning no current flow through the product) up to 70 % are acceptable and cause no harm to the circuit breaker. This value however is not sustained by any standardized test or internal.
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