The goal of the project is to create a three-phase solid-state relay system. It is made up of three single-phase units, each of which is separately controlled by a power TRIAC and a zero-voltage switching RC snubber network. Opto-isolators are required for each phase to receive switching signals from the 8051 series microcontroller. Loads are linked in series and driven by opto-isolators using a set of TRIACs. After a zero voltage pulse, the microcontroller creates pulses as an output and ensures that the load is switched on at the zero cross of the supply waveform. The zero crossing characteristic of the TRIAC driver (an opto-isolator) ensures low noise production by preventing rapid inrush of current inductive and resistive loads. Two push buttons are utilised to generate output pulses from the microcontroller that do not correspond with the waveform's zero voltage supply. To ensure that the load switches at zero voltage, a DSO or a CRO can be used to observe the provided voltage waveform to the load.