The TE Connectivity 1-640524-0 is a 20-position plug housing from the MR (Miniature Rectangular) series, designed for wire-to-wire or wire-to-panel interconnects where a dense, multi-row layout is needed. The 4-row arrangement at 0.165" (4.20 mm) pitch packs 20 circuits into a compact footprint, suited for harness assemblies in industrial control panels, automotive body electronics, and appliance power distribution where space is tight but circuit count is high.
Key Features and Termination
The housing accepts female socket contacts (sold separately — see sourcing note below) and terminates via crimp, allowing the builder to attach wires before inserting them into the housing. The locking ramp fastens the plug to its mating receptacle with an audible click, providing positive retention against vibration and cable strain. Panel mount with snap-in clips secures the connector to a cutout without hardware, simplifying field installation.
Mating and Contact Selection
This plug housing mates with the corresponding MR series receptacle header (same pitch and row count). The 4-row, 20-position layout means the mating half must also be a 4-row, 20-position receptacle — verify the row count and position count on the receptacle before ordering. The locking ramp on the plug engages a matching ramp on the receptacle housing.