Setra's family of current sensors are designed to sense low currents for fractional HP motors, as well as currents up to 200 Amps, and are ideal for monitoring motors that drive fans, pumps, and blowers. The CSS model is ideal for new installations and the CSC split design can be clamped on after the fact with no intrusion into the power lines. The addition of the Snap-On Power Relay option (on either design) – allows the remote starting or stopping of fan and pump motors.