Functional Devices RIB RIBL4C Relay

The Functional Devices RIBL4C is a contractor-grade enclosed pilot relay designed for high-density control in building automation and HVAC control systems. This "Relay in a Box" features a versatile configuration of three SPST-NO contacts and one SPDT contact, allowing for the simultaneous management of multiple loads from a single trigger. Engineered for reliability, the 10-30V AC/DC coil is compatible with a wide array of 24V digital controllers and thermostats, eliminating the need for external power transformers in most low-voltage applications. Each of the four relays is rated for 10 Amp resistive loads at 277 VAC, making it ideal for lighting circuits, pilot duty signaling, and small motor control. The unit is housed in a NEMA 1 plenum-rated enclosure with a 1/2-inch NPT nipple, ensuring a clean, secure installation directly onto electrical junction boxes. Integrated LED status indicators provide immediate visual confirmation of relay activation for faster field troubleshooting.

• Multi-Channel Control: Combines 3 SPST-NO and 1 SPDT relay in a single housing to streamline complex wiring.
• Universal Input: The 10-30V AC/DC operating range supports both AC and DC control circuits without additional hardware.
• Plenum Rated: UL916 and UL864 approvals ensure compliance for use in environmental air spaces and fire alarm signaling.
• Pre-Wired Design: Features 16-inch 600V lead wires to reduce labor time and minimize termination errors on the job site.
• High Cycle Life: Mechanical endurance rated for 10 million cycles for long-term performance in demanding commercial environments.

What is the maximum current rating for the contacts?
Each of the four relays in the unit is rated for up to 10 Amps resistive at 277 VAC or 28 VDC. For inductive loads, it is rated for 480 VA pilot duty.

Can this relay be used in a return air plenum?
Yes, the housing is UL listed and plenum-rated, making it suitable for installation within environmental air ducts and ceilings.

How do I verify if the relays are energized?
The enclosure features four red LEDs that illuminate when the corresponding relay coil is successfully activated, allowing for quick diagnostic checks without a multimeter.

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.