Functional Devices RIB2402B Relay

The Functional Devices RIB2402B Relay is a heavy-duty, 20-amp enclosed power relay designed specifically for the rigorous demands of HVAC control systems and industrial automation. Built with a SPDT (Single Pole Double Throw) configuration, this "Relay in a Box" (RIB) provides a reliable interface between low-voltage controllers and high-voltage loads. It features a multi-voltage coil that accepts 24VAC/DC or 208-277VAC, eliminating the need for multiple stocking units and streamlining BAS (Building Automation System) integration. Housed in a NEMA 1 plenum-rated enclosure, the RIB2402B is engineered for durability with a mechanical life expectancy of 10 million cycles. The pre-wired design with 16-inch 600V rated leads and a 1/2" NPT nipple ensures rapid installation directly onto standard electrical boxes, making it a staple for contractors handling fan coil units, lighting automation, and motor control applications up to 2 HP.

• Universal Coil Compatibility: Operates on 24VAC/DC or 208-277VAC, providing extreme installation flexibility across different job site power requirements.
• High Contact Rating: Robust 20A resistive rating at 277VAC allows for the switching of heavy resistive, ballast, and motor loads.
• Plenum-Rated Protection: The NEMA 1 enclosure is UL accepted for use in plenum spaces, ensuring compliance with strict fire and safety codes (UL916, UL864).
• Visual Diagnostics: Includes an onboard LED status indicator for immediate verification of relay activation during troubleshooting.
• Precision Engineering: Fast 18ms operate time and continuous duty coil performance for high-cycle industrial environments.

Can I use the RIB2402B to control a 120V load with a 277V signal?
Yes. Detailed wiring diagrams confirm that the 277VAC coil can be energized by a lighting circuit to switch a separate 120VAC fan or motor load using the SPDT contacts.

What is the maximum horsepower rating for this relay?
This enclosed power relay is rated for up to 1 HP at 120VAC and 2 HP at 277VAC, making it suitable for most fractional and small integral horsepower motor control tasks.

Is this relay suitable for energy management systems?
Fully. With UL916 Energy Management and UL864 Fire certifications, the Functional Devices RIB2402B is an industry standard for LEED-certified projects and advanced HVAC automation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.