Harwin M300 Power Connectors

Harwin’s M300 series is a high reliability / high performance, 3.00mm pitch connector system which has been developed to withstand harsh environments as found in Aerospace, Defense and other Industrial sectors. The M300 provides a single and dual row cable to board and board to board solution for applications using up to 10A of power in a small space envelope.

With features such as housings clearly marked with ”Position 1” identifiers, and extended rear potting wall for additional strain relief. The moldings are manufactured from Halogen and RoHSRed Phosphorus free glass filled thermoplastic and so ALL M300 Connector assemblies are RoHS compliant. They allow for optional Jackscrews for security of connection, a unique high-reliability contact design ensures the a strong signal strength during any extreme vibrations, shock or bump. They also have 3 polarising points on each component to prevent mis-mating.


  • Small PCB footprintM300 PR Pic Jan 16
  • Up to 5 and up to 10 Amp versions
  • Up to 1,000 operations
  • Extremes of temperature -65 + 175ᵒC
  • 3MM Pin Spacing
  • Jackscrew Security System
  • Prevents Damage to contacts in blind mating conditions
  • Keyway Polarising position points prevent mis-mating
  • Manufactured from Environmentally friendly materials.
  • Four Fingers Contact ensures connectivity in high vibration environments.

For Any more information or Specific details on the Harwin M300 Connector Range please click here for M300 Brochure