Specially designed for installation on input devices

B-COMMAND Enabling switch ZA3

Mechanical Specifications

  • installation dimension of Ø16mm
  • protective caps rubber: yellow, black, grey (silicone-free)
  • protection class: IP65 (front side)
  • operating temperature: -25°C…+60°C

Electrical Specifications

  • 3 positions (OFF – ON – OFF)
  • redundant working contacts fulfil safety category 4
  • 2 working contacts
  • Your request for Enabling Switches ZA3

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Catalogue Download

Find out more about the general features and technical specifications of the Enabling Switches ZA3 in our current product catalogue. The Enabling Switches ZA3 can be individually adapted to offer added value for machine safety. Premium engineering – that is our claim for every single Enabling Switches ZA3. We would like to convince you of this.


To give you a first overview of the Enabling Switches ZA3 from B-COMMAND, we provide you with a 2D drawing of the Enabling Switches ZA3. Of course, the B-COMMAND team will be happy to advise you.

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3-step enabling switch series ZA3

The B-COMMAND enabling switch ZA3 is a 3-stage (Off-On-Off) enabling switch, which is ideal for installation on input devices. The enabling switch ZA3 has a mounting diameter of Ø16mm. It is mounted by means of a locknut, which also ensures protection against twisting.

The 2 working contacts are change-over contacts, which offer the customer several wiring options. The redundant contact configuration fulfils safety category 4.

For optimum operating convenience, the actuating force from position 2 to 3 is absolutely identical for both centric and eccentric pressure: Even switching with only one finger at the outer end is reliably possible.

The B-COMMAND enabling switches ZA3 are available with or without rubber cap. Besides the standard color yellow, we can also supply the enabling switch ZA3 with a grey or black rubber cap. For automotive applications our rubber caps for enabling switches are also available in silicone-free material.

If you have any questions about our enabling switch ZA3, we are always available by phone, e-mail or live chat.

The functionality of our enabling switches is 3-step or based on 3 positions. The working contacts are actuated in the middle position. For this purpose we have implemented a clearly perceptible pressure point on the design side. In case of panic action / injury the operator would either press firmly (3rd stage) or release the handle (1st stage). Both times the working contacts would be deactivated and thus the system would be stopped. The 2nd stage must therefore be actively operated and held. It is mainly used when setting up or maintaining machines or robots within danger zones.