Switching probes
The right switching probe for every application

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Switching probes (SKS) are suitable for many various applications: not only can they be used for component detection tests and switches for closed/open checks, but also as a signal trigger for process control. 

Furthermore, in combination with other test probes (e.g., push-back probes), position determination of contact terminals in plug housings is possible. In most cases, INGUN switching probes are so-called “closers”, and are normally opened (NO). 

That means that the electric circuit is closed when the plunger is activated, allowing the plunger to be pushed further beyond the switching point. The rated current applied can only be transmitted in the closed state.


Reliable switching with all versions

Press-in and screw-in versions are available, depending on installation requirements. These are also available as quick-exchange systems in most series. Screw-in versions are especially suitable for applications with vibrations or unwanted side forces or axial forces. This prevents the test probe moving out of the receptacle.

A large number of different switching probes (SKS) are available to meet the respective test requirements:

  1. Component detection test, load free detection with plastic tips
  2. Printed circuit boards (PCB) presence check, or fixture open/close check
  3. Plug detection test in module & locking clip detection test in plug

Wide range from
design to tip style

In most series, these probes act as a closer and are normally open (NO). However, there are also openers, which are opened when the switching circuit is activated. These switches are normally closed (NC). The switching probes (SKS) vary in terms of the following features: dimensions (grid size and length), switch path, working stroke, installation method (press-in or screw-in), and available tip styles. With insulating plastic tip styles, voltage-free checks can be performed on components (here the signal is not sent through to the connection).

To regulate the installation height, various receptacle collar heights are available. Similarly, screw-in versions vary the installation height by means of a thread and allow the position of the switch point to be precisely set. The switching probes are held in place by the crimp points on the receptacle.

Installation options plus quick-exchange systems

Switching probes are installed either by pressing or screwing them into the receptacle, for which both standard receptacles and quick-exchange systems are available. The latter enables the switching probes to be changed quickly without new wiring. This results in reduced maintenance and less down time, and thus the costs associated with those. The wiring is done by the test equipment manufacturer only, preventing wiring errors during maintenance.

The quick-exchange receptacles are also available with a knurl to ensure they are held securely in the mounting hole over time. For the electrical connection, a cable is always soldered onto the receptacle. The second cable is either soldered directly onto the inner conductor, connected using a plug, or the quick-exchange receptacle.

INGUN SELECTION SKS-425 002 300 A 2502 E
Switching Probe SKS-425 002 300 A 2502 E Item SKS-425-0014
  • For a wide range of applications: performs components detection check, is a switch for detecting closed/open states, and a signal transmitter for process control
  • The electrical connection is ensured by installation using a receptacle
  • Designed as normally open (NO), i.e. The circuit is closed when actuated
INGUN SELECTION SKS-415 002 300 A 2302 2
Switching Probe SKS-415 002 300 A 2302 2 Item SKS-415-0001
  • For a wide range of applications: performs components detection check, is a switch for detecting closed/open states, and a signal transmitter for process control
  • The electrical connection is ensured by installation using a receptacle
  • Designed as normally open (NO), i.e. The circuit is closed when actuated
INGUN SELECTION SKS-415 002 500 A 2302 E
Switching Probe SKS-415 002 500 A 2302 E Item SKS-415-0075
  • For a wide range of applications: performs components detection check, is a switch for detecting closed/open states, and a signal transmitter for process control
  • The electrical connection is ensured by installation using a receptacle
  • Designed as normally open (NO), i.e. The circuit is closed when actuated
INGUN SELECTION SKS-215 002 180 A 0802 E
Switching Probe SKS-215 002 180 A 0802 E Item SKS-215-0081
  • For a wide range of applications: performs components detection check, is a switch for detecting closed/open states, and a signal transmitter for process control
  • The electrical connection is ensured by installation using a receptacle
  • Designed as normally open (NO), i.e. The circuit is closed when actuated
INGUN SELECTION SKS-215 302 180 A 1502
Switching Probe SKS-215 302 180 A 1502 Item SKS-215-0010
  • For a wide range of applications: performs components detection check, is a switch for detecting closed/open states, and a signal transmitter for process control
  • The electrical connection is ensured by installation using a receptacle
  • Designed as normally open (NO), i.e. The circuit is closed when actuated
INGUN SELECTION SKS-100 302 100 A 2000 A
Switching Probe SKS-100 302 100 A 2000 A Item SKS-100-0001
  • For a wide range of applications: performs components detection check, is a switch for detecting closed/open states, and a signal transmitter for process control
  • The electrical connection is ensured by installation using a receptacle
  • Designed as normally open (NO), i.e. The circuit is closed when actuated
INGUN SELECTION SKS-215 302 180 A 1502 M
Switching Probe SKS-215 302 180 A 1502 M Item SKS-215-0035
  • For a wide range of applications: performs components detection check, is a switch for detecting closed/open states, and a signal transmitter for process control
  • Various collar heights are available on the receptacles to adjust the installation height
  • The installation height can be varied, and the position of the switching point can be precisely adjusted via the probe’s thread. The SKS is secured in the correct position by crimp point in the KS.
  • The electrical connection is ensured by installation using a receptacle, optionally available with a quick-change system for easy exchange during maintenance
INGUN SELECTION SKS-449 405 400 U 2001 M
Switching Probe SKS-449 405 400 U 2001 M Item SKS-449-0001
  • Switching probe for detection test of plugs in test modules from the side
  • SKS probe is activated by a ball and is resistant to side forces
  • Particularly suitable for limited working spaces in 295 Mil grids