2387138-2 is a CPC (Circular Plastic Connector) square flange receptacle connector cable assembly from TE Connectivity's Series 2 product line. This rugged, cost-effective cable assembly features a size 23 shell with 57 contacts in a reverse sex (REV) configuration, designed for power input and output applications. The connector housing is made from heat resistant thermoplastic, while contacts are copper alloy with gold over palladium-nickel over nickel plating in the mating area and tin over nickel plating in the wire crimp area. Operating temperature ranges from -55°C to 105°C with a maximum of 500 mating cycles for gold or silver contacts. Common applications include industrial machinery, control cabinets, rail and transit systems, HVAC equipment, and communication equipment.