Power Connectors Set New Benchmarks



Harwin’s expansive M300 family comprises robust cable-to-board, board-to-board, and cable-to-cable power connectors. Available in 3, 6 and 10 contact formats, these units can be accompanied by a variety of cable assembly options with lengths from 150 to 450 mm supplied.


Thanks to the patented 4-finger contact design employed, which relies on a Beryllium Copper alloy construction, connection integrity is always maintained – even when these connectors are subjected to high degrees of shock, vibration, or other forms of mechanical stress. Despite their limited dimensions, the narrow pitch connectors have a 10A current rating and are therefore very well optimized for use in systems where the performance expectations are exacting, but space constraints also need to be contended with.


A combination of stainless steel jackscrews ensure secure mating. Consequently, the connectors have a mating cycle durability of 1,000 mates/un-mates. A series of polarization mechanisms are also incorporated to prevent mismating occurring, plus the recessed ‘scoop-proof’ female contacts and shrouded housing arrangement for the male contacts help protect them from sources of potential damage. Furthermore, a back potted rear aids cable retention.


Halogen-free and RoHS compliant, the Harwin M300 offering is predominantly aimed at motorsport, defense, factory automation, satellite, robotics, renewable energy and avionics deployments. An extensive working temperature range is supported (spanning from -65 to 175°C) and low outgassing properties are of major benefit if these connectors are deployed within a vacuum.



  • Secure jackscrew system
  • 10A per contact (all electrically loaded; 5A if 22AWG wire is used)
  • Proven 4-finger contact design to maintain electrical contact through high vibration and shock
  • Beryllium Copper Contact for improved temperature range: -65 to +175°C
  • 1,000 Mating cycles durability
  • Future-proofed Materials - halogen-free, PFOS-free, SVHC-free and RoHS compliant
  • Low outgassing properties - 0.68% TML, 0.01% CVCM, 0.26 WVR (Water Vapour Recovered)
  • Scoop-proof female connectors
  • Ready-made Off-The-Shelf cable assemblies available
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