Functional Devices RIBD01BDC 120V 20A SPDT Time Delay Relay

Description

The Functional Devices RIBD01BDC is a 120V, 20-amp Single-Pole Double-Throw (SPDT) time delay relay engineered for dependable switching and sequencing control in commercial and residential HVAC applications. Designed and manufactured by Functional Devices — a trusted name in HVAC control components — this relay provides precise on-delay or off-delay timing to protect equipment, sequence startup cycles, and prevent short-cycling in a wide range of heating, cooling, and ventilation systems.

Key Features

• 120V AC coil voltage for compatibility with standard HVAC control circuits
• 20-amp contact rating for robust load switching capacity
• SPDT (Single-Pole Double-Throw) output provides both normally open and normally closed switching
• Built-in time delay function for sequencing, anti-short-cycle, or delayed shutdown applications
• Compact, panel-mount-friendly design for easy installation in control panels and enclosures
• Durable construction built to withstand the demands of continuous HVAC system operation

Typical Applications

• HVAC equipment startup and shutdown sequencing
• Anti-short-cycle protection for compressors and motors
• Fan delay control on heating and cooling systems
• Commercial building automation and control panels
• Ventilation system time-based switching

Specifications

• SKU: RIBD01BDC
• Brand: Functional Devices
• Coil Voltage: 120V AC
• Contact Rating: 20A
• Contact Configuration: SPDT (Single-Pole Double-Throw)
• Relay Type: Time Delay