Functional Devices RIBM2401B Relay

Streamline your next building automation install with the Functional Devices RIBM2401B, a professional-grade SPDT 20Amp Enclosed Relay designed for direct 4-inch track mounting. This high-performance power relay is a staple for HVACR contractors, offering a multi-voltage 24 Vac/dc/120 Vac coil that eliminates the need for stocking multiple single-voltage units. Built for rugged field use, the RIBM2401B features a pre-mounted track design for high-density panel layouts, making it the ideal solution for controlling fans, pumps, and mid-range motors. With a 10 million mechanical cycle life rating and an integrated LED status indicator, this dry contact relay provides instant visual confirmation of activation, reducing troubleshooting time in the field. Whether you are expanding a Building Automation System (BAS) or integrating safety interlocks, this relay’s 20A resistive rating at 277Vac ensures reliable switching under heavy inductive and resistive loads.

• Dual Coil Voltage: Versatile 24 Vac/dc or 120 Vac input simplifies field wiring and reduces inventory overhead.
• High Contact Rating: Rated for 20 Amp resistive loads and up to 2 HP at 277 Vac, suitable for demanding motor control applications.
• Track Mount Efficiency: Snaps directly into 4-inch mounting tracks for clean, high-density panel organization.
• Diagnostics: Visible LED indicates relay activation to assist with quick system startups and commissioning.
• Durable Construction: Engineered for industrial environments with an operating temperature range of -30 to 140°F.

Is the RIBM2401B suitable for motor loads?
Yes, this track mount relay is rated for 1 HP at 120 Vac and 2 HP at 277 Vac, making it effective for staging exhaust fans and small pump motors.

What is the difference between this and a standard RIB relay?
The "M" in RIBM2401B denotes it is a modular track-mount version without a separate external nipple, specifically designed to fit into a snap-track inside a control cabinet rather than mounting to a junction box.

Can I use this relay with a 24Vdc digital output from a controller?
Absolutely. The coil is designed to accept 24 Vdc, making it fully compatible with modern DDC controllers and PLC outputs.

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.