Functional Devices RIB243P-NC Power Relay

The Functional Devices RIB243P-NC is a heavy-duty, enclosed power relay engineered for rigorous commercial and industrial application control. Featuring 16-inch, 600V rated wire leads and a 0.50-inch NPT nipple, this "Relay in a Box" provides a streamlined installation for 3-pole power switching. The 24 Vac/dc continuous duty coil operates a 3PST configuration with Normally Closed (NC) contacts, making it a reliable choice for failsafe operations or interlocking sequences. With a 20 Amp resistive rating and compatibility with high-voltage loads up to 480 Vac, this unit is built for demanding motor and lighting circuits. The NEMA 1 housing is UL accepted for use in plenum spaces, ensuring compliance in HVAC air handling systems. Professionals prefer this model for its LED status indicator and 10-million-cycle mechanical life, providing clear diagnostics and long-term performance in the field.

• High-Capacity Switching: Rated for up to 3 HP at 480 Vac or 1.5 HP at 120 Vac, managing low-horsepower motor loads and ballast circuits effectively.
• Versatile Control: The 24 Vac/dc coil voltage integrates seamlessly with most building automation systems and HVAC controllers.
• Plenum Rated Enclosure: The durable gray NEMA 1 housing allows for secure mounting directly to electrical boxes in ceiling spaces.
• Pre-Wired Design: Reduces field labor by eliminating the need for external sockets or separate enclosures.

What is the default state of the RIB243P-NC contacts?
The contacts are Normally Closed (NC), meaning the circuit remains closed until the 24V coil is energized.

Can this relay be used for 3-phase applications?
Yes, the 3PST power relay configuration is specifically designed to switch all three legs of a 3-phase circuit simultaneously.

How do I verify if the relay is active?
The integrated LED status indicator illuminates when the coil is energized, allowing for rapid onsite troubleshooting.

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.