Resistor Element

Resistor Element

Resistor elements are designed to carry rated current for the rated time without exceeding specified temperature limits. In case of short time ratings, dissipation is negligible and the temperature rise for the resistor element depends on its capacity to store the energy generated in proportion to the mass and specific heat of the material used.

When the current flows continuously for a relatively long duration, the temperature of resistor element increases and then stabilizes at value for which energy supplied is entirely dissipated to the atmospheres. Hence such resistors are designed to allow for maximum heat dissipation.