The SF542310 solid state relay manufactured by Celduc is a single-pole, single-throw (SPST-NO) device with a control voltage of 4÷30VDC, current rating of 10A, and an operating voltage range of 12÷280VAC. The device has isolated input and output terminals, and is typically used to switch high power loads such as motors, resistive heaters, lamps, and heaters. This device can be used to provide high isolation between the load and power supply, and can also be used to provide an additional level of surge protection and overcurrent protection.