The Functional Devices RIBU2C Enclosed Relay 10 Amp 2 SPDT & Override with 10-30 VAC/DC/120 Vac Coil is a Functional Devices relay for HVAC repair and replacement work. Use it when the part number RIBU2C and the listed specifications match the equipment being serviced.

Specifications: # Relays & Contact Type: Two (2) SPDT Continuous Duty Coil Expected Relay Life: 10 million cycles minimum mechanical Operating Temperature: -30 to 140 F Humidity Range: 5 to 95% (noncondensing) Operate Time: 20ms Relay Status: LED On = Activated Dimensions: 2.30″ x 3.20″ x 1.80″ with .75″ NPT nipple Wires: 16″, 600V Rated Approvals: UL Listed, UL916, UL864, C-UL / California State Fire Marshal, CE, RoHS Housing Rating: UL Accepted for Use in Plenum, NEMA 1 Gold Flash: Yes Override Switch: No

Key Specs

• Type: SPDT
• Voltage: 120v
• Horse Power: 1/3
• Product Type: Relay

Expert Verdict

Reviewed by the SuperArbor Pro Desk: choose this part when the existing component label and unit documentation match RIBU2C and the spec set above. It is best suited for targeted HVAC service repairs where exact fitment matters more than broad universal compatibility.

FAQs

What is the Functional Devices RIBU2C used for?

It is a relay for compatible Functional Devices HVAC equipment. Match the part number RIBU2C and the equipment service literature before ordering or installing.

Which specs should I verify before purchase?

Verify the spec set shown for this part: Type: SPDT; Voltage: 120v; Horse Power: 1/3; Product Type: Relay. The replacement should match the existing component and the unit documentation.

Does the electrical rating need to match exactly?

Yes. Confirm voltage rating 120v against the failed component label. Do not substitute a different rating unless the equipment manufacturer allows it.

Is this an OEM-style replacement part?

Use it as a direct replacement only when Functional Devices documentation lists RIBU2C or an approved equivalent for the unit being serviced.

Who should install this HVAC component?

A qualified HVAC technician should install and test the relay. Disconnect power first, follow lockout procedures, and confirm safe operation after replacement.

Safety and Installation Notes

Disconnect power before service. HVAC electrical and combustion-related components should be installed and tested by a qualified technician. After installation, confirm wiring, mounting, airflow or fluid routing as applicable, and normal system operation.