Description
The Functional Devices RIBH1S is a compact, versatile enclosed relay designed for demanding HVAC and building automation control applications. Its wide-ranging dual-voltage input capability makes it an ideal solution for interfacing low-voltage control signals with line-voltage loads, eliminating the need for multiple relay SKUs across different system configurations.
Wide-Voltage Input Flexibility
The RIBH1S accepts a broad control input range of 10–30Vac/dc as well as 208–277Vac, allowing it to be driven directly from low-voltage thermostats, building automation system outputs, or standard line-voltage control circuits. This flexibility simplifies installation and reduces inventory requirements for contractors and technicians.
SPST Normally Open (NO) Output
The single-pole, single-throw normally open output configuration is the most common relay arrangement used in HVAC switching applications. When the coil is energized, the output contact closes to complete the load circuit — making the RIBH1S suitable for controlling fans, pumps, damper actuators, lighting, and other switched loads.
Key Features
- Control input voltage: 10–30Vac/dc and 208–277Vac
- Output configuration: SPST Normally Open (NO)
- Dual-voltage input range for maximum installation flexibility
- Enclosed relay design for protection in panel and field installations
- Suitable for HVAC, building automation, and light commercial control applications
- Compact form factor for easy mounting in control panels or junction boxes
Typical Applications
- Fan and blower switching
- Pump and valve control
- Damper actuator enable circuits
- Building automation system output interfaces
- Low-voltage to line-voltage signal conversion
Why Choose Functional Devices?
Functional Devices is a trusted name in HVAC and building automation relay products, known for their RIB® (Relay in a Box) series. Their relays are engineered for reliability, ease of installation, and long service life in commercial and light industrial environments.
Reviews
There are no reviews yet.