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NCS Series

The basic form of circular metal connector.
A representative series that has a long history of use in various indoor manufacturing facilities. It
also has high resistance to starting current and load current, and is used in a variety of manufacturing facilities.


RoHS RoHS compliant
Waterproof none
Locking Method Screw locking method
Mechanism and material features
  • Simple structure, easy to handle and durable
  • 10 shell sizes and numerous connector shapes available for a wide range of applications
About standards
  • Products that comply with the Electrical Appliance and Material Safety Act are available
  • <CSA NRTL/C> certified products available (CSA: C22.2 No.182.3)
Wiring Method Soldering
Allowable Temperature Range -40℃~+120℃
Notes Contacts with a rated current of 80A or more are designed to be removable from the insulator.

When soldering, remove the contacts using a contact wrench.


  • Insulation resistance: When measured between the nearest conductors at the specified voltage, it is 2,000 MΩ or more.
  • Withstand voltage: No short circuit or other abnormalities occur even when the specified voltage is applied between the closest conductors for one minute.
  • Contact resistance: When a pair of contacts is joined to the correct length, the conductor resistance is 3 mΩ or less.

Materials and Processing

Material Process
Shell Zinc alloy or brass
(some aluminum alloys)
Chrome plating
Special treatment
Tin cobalt plating (shell size 16 only)
Insulator Synthetic Resin
Contact Copper Alloy Shell sizes 14, 16, 25, 30: Nickel plating
Shell sizes 40, 44, 50, 54, 60, 64: Silver plating
Shell size 30 (contact count 7H, 13): Gold plating

* Please contact us if you would like to change to gold-plated contacts.