SSR-30048RD1B with Relay is a solid state relay manufactured by QLT Power with a control voltage of 4 to 16VDC, a current rating of 300A, and an operating voltage of 44 to 480VAC. The series number is SSR-R. It is a high-performance control component designed for high-current applications in industries such as HVAC, industrial machinery, robotics, and power control. It features full-on and zero voltage switching, as well as high-speed switching that ensures superior circuit protection. Additionally, it has a built-in noise filter to minimize EMI/RFI interference and enhance the performance of the system it is connected to.