The rated currents are the values of primary and secondary
currents on which performance is based.
Rated primary current
The rated current (sometimes referred to as rated current,
nominal current or rated continuous current) is the maximum
continuous current the equipment is allowed to carry.
The current is expressed in A rms.
The maximum continuous thermal current is based on average
24 h ambient temperature of +35 °C.
It should be selected about 10 – 40% higher than the estimated operating current. Closest standardized value should