Functional Devices RIB RIBXKA Sensor

The Functional Devices RIBXKA is a solid-state adjustable current sensor designed for reliable load monitoring in commercial HVACR applications. Engineered with a split-core housing, it allows for seamless installation around existing wiring without disconnecting the circuit, making it a preferred choice for retrofitting fan status monitoring and pump loss of flow detection. This sensor operates over a versatile range of 0.50 to 150 Amps, providing a normally open solid-state contact that closes when the sensed AC current exceeds the user-defined adjusatble trip point. Technical specifications include a monitored voltage capability of up to 600 Vac and a maximum switching voltage of 30 Vdc/Vac. The internal circuitry is self-powered by the induced current from the monitored line, eliminating the need for an external power supply. Its compact, rugged design ensures long-term stability in high-vibration environments commonly found near variable frequency drives and large motor housings.

• Snap-on split core design reduces labor time by eliminating the need to break the circuit during installation.
• Adjustable threshold allows for precise calibration to detect belt breaks or motor stalls.
• High isolation voltage rated up to 600 Vac ensures safety and compatibility with industrial motor leads.
• LED status indicator provides immediate visual confirmation of the contact state for faster troubleshooting.
• Self-powered operation simplifies wiring by removing the requirement for dedicated power runs.

What is the minimum current required for the RIBXKA to function?
The sensor requires a minimum of 0.50 Amps of AC current flowing through the monitored conductor to energize the internal sensing circuit and operate the output contact.

Can this sensor be used with Variable Frequency Drives (VFDs)?
Yes, it is commonly used for VFD load status; however, for accurate sensing, it should be installed on the line side of the drive to avoid high-frequency noise and non-sinusoidal waveforms found on the load side.

How do I calibrate the trip point?
With the motor running at normal load, turn the adjustment potentiometer until the LED changes state. It is best practice to set the threshold roughly 10-20% above the minimum operating current to avoid nuisance trips during slight load fluctuations.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.