What is the current rating of the relay protection device

Contact ratings are the standard values for guaranteed relay performance and generally indicates the current rating of the relay contacts. The rating varies depending on the voltage applied and the types of electrical loads. Is a protection relay required in all the electrical panels? If we think that overcurrent can occur any time and damage the electrical. NEC Article 430, Part III provides guidelines for sizing overload protection devices such as, overload relays, fuses and circuit breakers for motor branch circuit conductors against excessive heating caused by overload currents. Unlike instantaneous short circuit protection, overload relays provide time-delayed tripping that allows for normal motor starting. The proper application of overcurrent protective devices according to their ratings is critical to device performance. Features: ●Selectable trip class (5, 10, 20, 30) lets you set the desired level of protection ●5:1 adjustment range makes new relays a natural choice for a wide.