Functional Devices RIBH1S Relay

The Functional Devices RIBH1S is a high-voltage, enclosed single-pole single-throw (SPST) normally open relay engineered for demanding building automation and light industrial control applications. This 20-Amp pilot control relay features a versatile multi-voltage coil, accepting 10-30Vac/dc or 208-277Vac inputs, making it a reliable choice for interfacing low-voltage controllers with higher-voltage loads such as fans, motors, or lighting circuits. Designed for efficiency, the NEMA 1 housing includes a physical Override Switch, allowing technicians to verify circuit integrity or manually trigger equipment during troubleshooting without needing specialized tools. This dry contact relay serves as a direct replacement for the FUN-RIBH1-S and is often utilized in BAS hardware integration projects requiring high-current switching capacity. Its UL Listed enclosure is pre-wired with 16-inch leads, facilitating rapid installation in standard electrical boxes for contractors focusing on HVAC relay troubleshooting and reliable DIN rail or surface mount control solutions.

• Universal Coil Input: Simplifies inventory by supporting 10-30V AC/DC and 208-277V AC.
• Manual Override: Integrated SPDT switch provides local control for testing and maintenance.
• High Current Rating: Rated for 20 Amp resistive loads and up to 1 HP at 120V for motor control.
• Durable Enclosure: NEMA 1 rated housing ensures protection for internal components in commercial environments.
• Pre-Wired Leads: Reduces labor time with color-coded 16-inch wires for straightforward termination.

How do I wire a RIBH1S for a 277V lighting circuit?
Connect the 277Vac supply to the White/Black and Black coil wires, and use the Orange and Yellow wires for the SPST-NO contact switching. Always verify the specific wiring diagram on the housing for proper lead identification.

Is the RIBH1S suitable for inductive motor loads?
Yes, it is rated for 1 HP at 120V and 2 HP at 277V, making it appropriate for most fractional horsepower motor applications found in HVACR systems.

What is the purpose of the override switch on this relay?
The switch allows a technician to manually force the relay contacts closed (ON) or open (OFF) regardless of the coil signal, which is essential for diagnosing system-level control issues.

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.