Thermal Protected Electronic Step Relay and Dimmer are used for mounting within residential switch boxes. The Relay and Dimmer has maximum lamp load of 100 w and has two operating modes. The Relay and Dimmer is compatible with LED dimmable lamps. The Relay and Dimmer is suitable for incandescent and halogen lighting loads. The Relay and Dimmer is used with 3 or 4 wire connection and has soft on and off transitions and has thermal protection against overload and requires 230 v ac supply, 50 HZ, 50 or 60 HZ, 50/ 60 HZ with automatic recognition of frequency. The Thermal Protected Electronic Step Relay and Dimmer has rated voltage of 230 V AC and requires power ranging from 3 W to 100 W.