ElectricThe SSP3A250F7T Solid State Relay with Industrial Mount is a high power industrial grade switch used to control large-power electrical appliances, such as AC motors, heaters, etc. It is an extremely reliable switching device because it works on a semiconductor material, instead of traditional electromechanical contacts which are liable to start arcing and heat generation. The SSP3A250F7T is rated for 50 Amps with a voltage range of 48-530VAC. It works on a Zero-Cross Triggering mechanism, i.e. it turns a load on or off when the voltage passes through zero volts from either direction. This relay also features a thermal overload protection, achieved by a thermistor which senses and reduces the current during the overloads thus protecting the sensitive connected appliances. Finally, it has an operating temperature range of -40°C to +85°C, making it ideal for industrial applications.