Cam limit switch with integrated multiturn encoder, Yaw and Pitch limit switches

Geared Limit Switch Series FRM for Wind Turbines and Cranes

Mechanical Specifications

  • 2-12 contacts
  • Revolution ratio from 1:14 to 1:900
  • Snap-action and slow action contacts of various types
  • different different cam widths

Electrical Specifications

  • Protection degree IP66
  • Operating temperature -40°C…+80°C
  • 12mm stainless steel shaft
  • Protection class II
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Catalogue Download

Find out more about the general features and technical specifications of the Rotary Limit Switch FRM in our current product catalogue. The Rotary Limit Switch FRM can be individually adapted to offer added value for machine safety. Premium engineering – that is our claim for every single Rotary Limit Switch FRM. We would like to convince you of this.


To give you a first overview of the Rotary Limit Switch FRM from B-COMMAND, we provide you with a 2D drawing of the Rotary Limit Switch FRM. Of course, the B-COMMAND team will be happy to advise you.
  • Request CAD drawing for Rotary Limit Switch FRM

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Rotary limit switches FRM - The next Generation

The new FRM series rotary limit switch heralds a completely new generation of rotary limit switches. With this new rotary limit switch, completely new and unprecedented monitoring, control and switching functions can be realized.

In general, the rotary limit switch is used for motion control of industrial machines and industrial plants. The revolutions of the shaft are transmitted to a cam switch mechanism, which actuates mechanical switching contacts.

All variants of the switching contacts are designed as auxiliary current switches.

Reduction ratios of 1:1 to 1:900 are available for the rotary limit switches of the FRM series. The switch can be equipped with a maximum of 8 switching contacts. Each cam can be set individually to the desired position, thus allowing flexible definition of end positions and reference points.

To reduce abrasion and rusting, the transmission and guide shafts of the gear wheels are made of stainless steel.

All materials in direct contact with the environment are resistant to gases, oils and extreme temperature changes. The all-round rubber seal provides optimum protection against dust and water, so that protection degree IP 66 can be achieved without any problems. The optimized interior allows quick and easy cabling.