The SOLITRON Midi Current Sensing is a compact, singlephase SSR that is sensitive to variations in load conditions in industrial heating applications. This microprocessor-based device is ideal for detection of partial load failure and to ensure the highest process quality. Current sensing is integrated inside to eliminate the need to install an external current transformer. A membrane “button” on the front is used to effect a simple “teach in” of the current setpoint. Alarm delay time is set by a potentiometer. A drop in setpoint current of more than 13% will trigger an open collector alarm. Up to 50 alarm outputs can be connected in parallel to a standard PLC input. Typical conditions that can be detected are heater break or open-circuit, blown fuse, semiconductor short-circuit and faulty power connection. Device over-temperature protection is integrated as a standard feature. The product is ready to mount on DIN-rail or chassis and comes with integral heatsink. The standard housing dimensions enable straightforward replacement of alternative products