10 – 25 Ampere Ring Type Terminal

The CHR-Series

The CHR-series can be connected with ring type terminals.

Cam switches of the CHR-series are designed for universal application and may ideally be used for control switches, instrumentation switches and motor control switches.

This series has easily accessible terminals – even with the switch already mounted. The finger-proof terminals are accessible either horizontally or vertically.

Catalog 120: CG-, CH-, CHR-Switches: 10 A – 25 A

> Screw Terminal


Thermal Current:
lu/lth [A]: 20

Utilization Category (3 x 380 V – 440 V):
AC-23A [kW]: 7.5
AC-3 [kW]: 5.5



Thermal Current:
lu/lth [A]: 25

Utilization Category (3 x 380 V – 440 V):
AC-23A [kW]: 11
AC-3 [kW]: 7.5


According to IEC 60947-3, EN 60947-3, VDE 0660 part 107.

  • ON/OFF-Switches
  • Changeover switches
  • Step switches
  • General application switches
  • Series general application switches
  • Series-parallel general application switches
  • Coding switches (Exception: CHR16)
  • Voltmeter changeover switches
  • Ammeter changeover switches
  • Volt-Ammeter changeover switches
  • Control and Load switches
  • Control discrepancy switches 
  • Motor switches

Basically the CH-series are designed for horizontal wiring. Vertical wiring is available for Panel Mounting and Base Mounting.

Panel Mounting

The Panel Mountings are well used mountings which cover wide application ranges.
They consist of two main groups.

  • The two/four hole mountings, which are fixed by (2/4) screws around the center shaft hole.
  • While at the single-hole mountings the shaft hole is used for fixation.

The two/four hole mountings provide several variations which make them fit for all tasks.

Base Mounting

Base Mounting is used to fix a switch at the rear side, therefore it is the commonly used mounting for larger distributioncabinets. 
The switch can be mounted at the base panel by two or four screws and also by 'Snap-On for DINrail mounting.'. For this mounting, several door clutches with or without padlock are available.