Description
The Functional Devices RIB243P-NC is a 3-pole, single-throw, normally closed (NC) relay designed for dependable switching in HVAC systems, building automation, and commercial electrical control applications. Part of Functional Devices’ trusted RIB (Relay in a Box) product line, this relay delivers proven performance in a compact, easy-to-install package.
Key Features
- 3-pole, 1-throw (3PDT) contact configuration for versatile switching
- Normally closed (NC) contact state — circuit is closed when the coil is de-energized
- 24V coil voltage — compatible with standard HVAC low-voltage control circuits
- Compact RIB (Relay in a Box) form factor for easy panel or DIN rail mounting
- Ideal for HVAC controls, building automation, and commercial electrical applications
- Manufactured by Functional Devices, a trusted name in relay and control technology
Application
The RIB243P-NC is well suited for use in HVAC control panels, air handling units, rooftop units, and building automation systems where a normally closed, multi-pole switching solution is required. The 24V coil voltage integrates seamlessly with standard low-voltage control wiring found throughout commercial and residential HVAC installations.
Product Specifications
- SKU: RIB243P-NC
- Brand: Functional Devices
- Coil Voltage: 24V
- Pole Configuration: 3-Pole, 1-Throw (3PDT)
- Contact Type: Normally Closed (NC)
- Series: RIB (Relay in a Box)







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