Functional Devices RIB2421SB Enclosed Relay 20 Amp SPDT with Override 24Vac/dc

The Functional Devices RIB2421SB is an enclosed pilot relay designed for switching applications in HVAC, lighting, and industrial control systems. This versatile relay features a 24Vac/dc control voltage with a 20 amp SPDT (Single Pole Double Throw) contact configuration, making it ideal for controlling motors, compressors, heating elements, and other electrical loads.

Key Features:

• 20 amp SPDT contact rating for switching loads up to 120-277Vac
• 24Vac/dc coil voltage for compatibility with most control systems
• Manual override switch allows local control independent of input signal
• Enclosed housing provides protection and allows for panel or surface mounting
• LED indicator light shows relay status at a glance
• UL 508 listed for safety and reliability
• Compact design saves panel space

The RIB2421SB includes a convenient manual override feature that enables technicians to test systems or provide temporary control during maintenance. The enclosed design protects internal components from dust and debris while providing clearly labeled terminals for simplified wiring. This relay is commonly used in HVAC control panels, building automation systems, and industrial equipment.