The Functional Devices RIBMN24Q4C-PX is a professional-grade 4-output sequencer module designed for precise HVAC staging and building automation system (BAS) integration. This unit operates on 24VAC/DC and accepts a 0-10VDC analog input to control four independent SPDT relay outputs. Ideal for managing multi-stage boilers, chillers, or fan banks, it features field-adjustable threshold settings, allowing technicians to program specific ON/OFF voltages for each relay without manual potentiometers or external multimeters. The on-board digital display provides real-time feedback of the input signal, ensuring accurate calibration in the field. Built with 15-amp rated contacts and an MT212-6 snap-track mount, this module consolidates complex control logic into a single, compact footprint. Its robust microprocessor-based design ensures reliable switching for heavy inductive or resistive loads, while regional LED indicators provide instant visual confirmation of power and relay activation status, making it a staple for high-density panel installations. Key Benefits Staging Efficiency: Allows for seamless sequencing of up to four loads from a single analog controller signal to prevent power surges. Digital Accuracy: The integrated 7-segment LED display and push-button interface eliminate the guesswork associated with traditional analog trim pots. Form C Versatility: Equipped with four SPDT (Single Pole Double Throw) contacts, providing both normally open and normally closed options for diverse wiring needs. Compact Integration: The 2.75-inch track mount profile saves critical rail space in crowded control cabinets and electrical panels. Non-Volatile Memory: User-defined setpoints are preserved during power interruptions, ensuring consistent system performance upon restoration. Common Questions Can I change the switching thresholds in the field? Yes, the RIBMN24Q4C-PX is fully field-programmable. You can set independent ON and OFF points for each of the four relays between 0.5V and 10VDC using the on-board navigation buttons. What kind of loads can the relays handle? Each of the four relays is rated for up to 15 Amps at 125 VAC, 10 Amps at 277 VAC, or 1 HP at 250 VAC, making it suitable for motor control and high-voltage pilot duty applications. Does this module require a separate power supply for the signal? The module requires 24VAC/DC for power. For optimal performance in AC applications, utilizing an isolation transformer is a standard practice among technicians to prevent ground loops and signal interference. 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.
