Littelfuse, Inc. Safety Relays ISS-105

The ISS-105 is a five-channel intrinsically safe relay and pump controller designed for pump control and monitoring in hazardous locations, meeting UL913 Sixth Edition and IEC EMC standards for ESD, RFI, and EFT. It operates on 120VAC, 50/60Hz, and features four normally open and one SPDT relay outputs with a pilot duty rating of 480VA at 240VAC or 7A at 240VAC for general purpose use. The device supports adjustable lag pump delays, high and low alarm options, and pump disable switches via DIP switches. It is rated for operation from -40°C to 55°C, mounts on 35 mm DIN rail or surface, and measures 94.06 mm H x 127.64 mm W x 59.69 mm D, weighing 544.31 g. Input terminals accept 12 to 20 AWG wire with a recommended torque of 3.5 to 4.5 in.-lbs.