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This is a Relay Logic Interface (RLI) circuit board used in Liebert / Emerson Network Power UPS and HVAC control systems. It provides electrical isolation and relay-based switching for monitoring and control signals between logic circuits and high-voltage equipment. Technical Description: Manufacturer: Liebert / Emerson Network Power Model / Part Number: 02-790668-00 Revision: A Type: PWA RLI (Relay Logic Interface) Circuit Board Assembly Function: Electrical isolation, relay interfacing, and signal transfer for control logic Relay Type: Finder 40.52 Series DPDT electromagnetic relays (2 relays installed) Relay Contact Rating: 10A at 250VAC / 30VDC (resistive load) Coil Voltage: 24VDC (nominal) Interface Terminals: 12-position green screw terminal block Connector Type: Pluggable terminal header for quick wiring PCB Material: FR4 glass epoxy Contact Configuration: DPDT (2 Form C) Control Logic Isolation: Optical or relay-based galvanic separation between control and load sides Operating Voltage: 24 VDC control signal input Signal Type: Digital / dry contact Mounting: Panel mount or subchassis mount Dimensions (approx.): 90 mm (L) × 65 mm (W) Operating Temperature: 0°C to +70°C Applications: • Liebert UPS and environmental control systems • Relay interface between control boards and external alarms or switching devices • Signal isolation and distribution in industrial control circuits Compliance: UL Recognized, CE Certified Please review pictures carefully and let us know if you have any questions!
Condition: Used
Weight: 0.90
Depth: 4.00
Length: 7.00
Width: 7.00
SKU: 11728 4.S8.8.1C
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