The X Series contains current sensors with or without a 10 or 20 Amp relay. An internal 10 Amp relay can be used to activate an external contactor, and currents up to 150 Amps are sensed externally with a Solid or Split current sensing ring. Other units control and sense up to 20 Amp loads, without the use of an external current ring, greatly reducing installation time. Models are available with fixed, or adjustable current sensing trigger points, or with voltage out. Externally visible LEDs indicate the status of the relay coil and current sensor trigger. The (Closed-Open-Auto) override switch, available on certain models, is a true override switch located on the load side of the relay.