RS Pro SD30 DIN Rail Semiconductor Relay, slim. The SD30 series semiconductor relays from RS Pro offer a compact solution without compromising on performance or reliability. Available with a variety of input and output options in a slim housing measuring 22.5 mm in width. Features and benefits include a maximum load current of 30 A, an output voltage range of 48 V ac to 530 V ac, an integrated heat sink, compatibility with standard DIN rails (35 mm), an LED indicator for input status, AC or DC control, and a touch-safe housing with IP20 protection rating.