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HDC Connection Types

The fastest connection yet!
The SNAP IN connection with that special “click”


When will it "click" with you?

The new SNAP IN connection technology enables significant acceleration of installation and maintenance processes in the field: Stripped, flexible, stranded wire connectors of 1 to 2.5 mm² (AWG 20 to 16) are easily inserted in the open connection point. Crimping on wire end ferrules and the time and material this entails is saved – instead it "clicks" and a secure connection is established. Completely without tools! Exclusively available from Weidmüller.


You can‘t wait for it to „click“ with you? Then order your free sample box now!


Fast wiring and easy maintenance in the field

Find our more about the product characteristics and simple handling of the new HDC-HE inserts with SNAP IN connection in the video.


Efficiency in every step

Faster connection

  • SNAP IN connection system enables reliable and quick wiring even for unexperienced technicians

Simply insert

  • Crimping on of wire-end ferrule is no longer necessary
  • Simply plug stripped, flexible, stranded wire into connection point
  • Reduction of material, processing costs and time

Closes with a click

  • Open SNAP IN connection system closes automatically as soon as stripped connector is in correct position
  • Spring releases with clear "click"
  • Secure connection that reliably withstands severe shocks and vibrations

Maintenance made easy

  • Open connection point by activating pusher with screwdriver
  • Remove connected wire
  • No special tools necessary

Secure connections by inserting – without wire-end


SNAP IN raises the wiring of heavy-duty connectors to a new level. The advantages of the innovative connection system are put to the test for the first time with the proven RockStar® HDC-HE inserts – exclusively from Weidmüller.


One system for diverse applications

Flexible spectrum

Fixed pole HDC-HE-QT inserts

  • Available with 6, 10, 16 and 24 poles (size 3, 4, 6 and 8)
  • Rated voltage: 500 V in accordance with DIN EN 61984 and 600 V AC/DC in accordance with UL/CSA American standards
  • Rated current: 16 A in line with DIN EN 61984

Safe in use

  • Maintenance with the 2.0 mm standard test plug
  • Plastic housing consist of glass-fibre reinforced insulating material PA 66/6
  • UL listing and railway qualification of the plastic ensures wide range of application options
  • Highest possible flammability rating V-0 in accordance with UL 94
  • Inserts useable in a temperature range of –40°C to 125°C

Compatible in the system

  • plugcompatible with existing HDC-HE inserts
  • with crimp, screw,
  • tension clamp and PUSH IN connection systems

HDC-HE connection systems in comparison

Regardless of what type of system you realise for what application – at Weidmüller you will find the appropriate connection. Inserts with various connection systems and their respective advantages are available to you as required. Now also with the novel, future-oriented SNAP IN system for rapid and reliable wiring, rewiring and maintenance.


Overview of HDC-HE connection systems


Quick Termination connection technology

  • Significant acceleration of installation and maintenance processes in the field
  • Tool-free
  • Saves material and time, since crimping on of wire end ferrules is unnecessary Insert stripped, flexible, stranded wire into open connection point until “click” is audible
  • Secure connection that withstands even severe shocks and vibrations reliably
  • Exclusively from Weidmüller

PUSH IN connection technology

  • Tool-free vibration-resistant and gas-tight connection
  • Stripped solid-core conductor is simply inserted into the terminal point until it butts against the end stop
  • Flexible conductors with crimped wire end ferrules or ultrasonicwelded conductors can be connected without any problems
  • Stainless steel compression spring guarantees high contact force between the conductor and the current bar
  • Spring and conductor stops ensure optimum connection conditions and a guide for the screwdriver to detach the conductor
  • Higher pull-out force than tension clamp system

Crimp connection

  • Wires are fed into a metal sleeve, which is then squeezed together with a special tool
  • Corrosion and vibration proof connection
  • Contacts can be crimped on the conductor outside of the connector and then inserted into the connector

Tension clamp connection

  • Separation of mechanical and electrical functions
  • Low contact resistance and high corrosion resistance
  • Tension spring, made from high-quality rustproof and acid-proof steel, pulls the conductor against the tin-plated copper current bar
  • Resistant to vibrations and high wire pull-out force

Screw connection

  • Gas-tight, vibration-proof connection
  • Excellent contact force
  • Perfectly suited for use in corrosive environments
  • Suited for connecting solid-core and flexible stranded conductors
  • Wire-protection frame ensures that finely-stranded wires will not splice off