Description
Functional Devices RIBT243B — 24VAC/DC Multi-Contact Relay
The Functional Devices RIBT243B is a versatile, multi-contact relay engineered for demanding HVAC and building automation control applications. With a 24VAC/DC coil voltage, this relay integrates seamlessly into low-voltage control circuits commonly found in commercial and residential HVAC systems, making it an ideal choice for contractors and controls technicians who need dependable switching performance.
Multi-Contact Switching Flexibility
The RIBT243B features a combined 2SPST (Single-Pole, Single-Throw) and 1SPDT (Single-Pole, Double-Throw) contact arrangement, giving installers maximum flexibility for a wide range of switching and control configurations. Whether you need normally open, normally closed, or changeover contacts, this relay delivers all three in a single compact package — reducing panel space requirements and simplifying wiring.
Key Specifications
- Brand: Functional Devices
- Model / SKU: RIBT243B
- Coil Voltage: 24VAC/DC
- Contact Rating: 20 Amps
- Contact Configuration: 2SPST + 1SPDT
Typical Applications
- HVAC equipment switching and load control
- Building automation and energy management systems
- Fan, pump, and compressor control circuits
- Multi-zone control panel wiring
- Commercial and light industrial control applications
Why Choose Functional Devices?
Functional Devices is a trusted name in HVAC and building controls, known for producing reliable, UL-recognized relay and switching products designed specifically for the trades. The RIBT243B upholds that reputation with robust construction and a high 20-amp contact rating that handles real-world HVAC loads with confidence.







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