Functional Devices RIBXGTA-ECM Split-Core Adjustable Current Switch 0.25-150A for ECM Motors

The Functional Devices RIBXGTA-ECM is a split-core adjustable current switch, also called a current sensor or current status switch. It is designed for electronically commutated motors (ECMs), which draw low and variable current. It is part of the RIB (Relay In A Box) RIBXG series. It senses from 0.25 to 150 amps and gives the building automation controller a reliable on/off status signal.

Key Features:

• Adjustable trip point as low as 0.25 amps for low-current ECM loads
• Sensing range of 0.25 to 150 amps
• Split-core design clamps around the monitored wire without disconnecting it
• Solid-state SPST normally open (N/O) contact output, rated 30 Vac/dc
• Status LEDs that show load current detected and over-trip-point conditions to help with setup
• Self-powered, with no external power supply needed
• Terminal strip accepts #14-22 AWG wire
• Removable mounting tab, and a wire clamp that locks against the monitored wire
• Operating temperature of -30 to 140°F and humidity range of 5 to 95% noncondensing
• Approvals: UL Listed, UL916, UL864, C-UL, California State Fire Marshal, CE and RoHS

The contact closes when current is above the threshold and opens when it is below. This makes the switch suited to proving ECM fan or pump operation in HVAC and industrial systems. Setup is simple: run the ECM at its lowest normal speed, clamp the sensor onto the conductor, and use the LED indicators to set the trip point.