Littelfuse LSR-0 Self-Powered Load Sensor 15A

The Littelfuse LSR-0 is a self-powered load sensor that is used as a proof relay mainly to confirm that current is flowing properly. It works on the concept of getting power from the wire under monitoring doing away with the need for control wires. It has a pull-in current of 15A and a drop-out current of 2.5A and it is capable of monitoring loads up to 135A, it is used in HVAC system applications such as interlocking fans, compressors, and heating elements. Advantages are lower costs of installation, small size, and high performance in conditions of low and high temperatures, from -20°C to +70°C.