Hirose : EM series 50A power-supply connector offers various safety and reliability capabilities


Hirose’s EM series: protective cover over female contacts

Hirose’s EM series of 50A power-supply connectors is ideal for industrial equipment which requires a high power rating and durability.

The EM range consists of in-line plugs and receptacles. The receptacles may be panel-mounted or attached to a DIN rail.

The innovative connector design incorporates three 50A power contacts and one ground contact. For safety, the contacts are arranged in sequence to ensure that the ground contact is connected before the power contacts during the mating process. The connector also has a protective cover over the female contacts to protect the contact area from the risk of damage.

Termination of the crimp contact is quick and easy using standard JIS crimping tools. A contact removal tool is also available.

The connector can withstand high mechanical stress with up to 200N of vertical cable pull force being applied safely. The robust snap-on lock provides secure mating with an audible tactile click to confirm correct engagement.

Customised keying arrangements can be applied to prevent incorrect mating of multiple connectors. Ten different keying combinations are possible through optional keys.


  • 500V AC-DC voltage rating
  • One-touch locking mechanism
  • Cable sizes: AWG8 and AWG10
  • 100 mating cycles


  • Semiconductor manufacturing equipment
  • Wind power generators
  • Industrial power-storage units
  • Industrial cooling systems