Description
Functional Devices RIBTW2421B-BCIP Overview
The Functional Devices RIBTW2421B-BCIP is a 20-amp NEMA 1 Binary I/O Relay designed for seamless integration into building automation systems (BAS). Part of Functional Devices’ trusted RIB® (Relay in a Box) product family, this unit combines a robust power relay with binary input/output capability, making it an ideal solution for HVAC control panels, fan coil units, air handling units, and a wide range of commercial building automation applications.
Key Features
- 20A relay switching capacity for demanding HVAC loads
- NEMA 1 enclosure rating — suitable for indoor, general-purpose installations
- Binary I/O functionality for direct interface with BAS controllers
- Compact, self-contained relay-in-a-box design for easy installation
- Designed for use in commercial HVAC and building automation control panels
- Reliable SPDT relay output for versatile switching configurations
- Pilot relay and current sensing integration supports advanced control sequences
Application
The RIBTW2421B-BCIP is well-suited for use in building automation and energy management systems where reliable binary input/output switching is required. Common applications include HVAC equipment control, fan and pump staging, lighting control interfaces, and integration with DDC (Direct Digital Control) systems. The NEMA 1 enclosure makes it appropriate for installation in indoor electrical panels and control cabinets.
Why Choose Functional Devices RIB® Relays
Functional Devices has been a trusted name in the HVAC and building automation industry for decades. Their RIB® relay product line is recognized for quality construction, ease of installation, and broad compatibility with major BAS platforms. The RIBTW2421B-BCIP continues this tradition by delivering dependable performance in a compact, field-ready package.
Specifications
- SKU: RIBTW2421B-BCIP
- Brand: Functional Devices
- Relay Capacity: 20A
- Enclosure Type: NEMA 1
- I/O Type: Binary Input/Output
- Application: Building Automation Systems, HVAC Controls







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