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This Static Transfer Switch (STS) PCB is a control and relay interface module developed by Liebert / Emerson Network Power. It is part of the control circuitry in UPS and power distribution systems, responsible for managing automatic or manual transfer between power sources to ensure continuous operation. Technical Description: Manufacturer: Liebert / Emerson Network Power Model / Part Number: 02-797102-00 Revision: 2 Type: Static Transfer Switch Board Function: Controls signal transfer and switching between redundant AC sources Main Components: • 2 × Omron G5LE SPDT relays for source transfer control • Power resistor for inrush current or timing circuit • Diodes for back-EMF protection • Two multipin connectors (male and female) for interface to system control bus Contact Rating: 10A @ 250VAC / 30VDC (resistive load) Coil Voltage: 24VDC nominal Contact Configuration: SPDT (1 Form C) Signal Interface: • 10-pin input connector (low voltage control signals) • 6-pin output connector (load or feedback return) Power Requirement: 24VDC @ ~150 mA (coil and logic supply) PCB Material: FR4, double-sided, conformal coated Mounting: Direct plug-in module or subrack mounting Dimensions (approx.): 70 mm × 70 mm Operating Temperature: 0°C to +70°C Applications: • Liebert UPS power switching and transfer systems • Dual-input source transfer modules • Critical load power continuity circuits • Signal relay board for automated transfer mechanisms 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: 6.00
Width: 4.00
SKU: 11735 4.S8.8.3B