Miniature Insert switch

for Zone 1/21
  • Compact design
  • small range of actuators
  • Silver and gold contacts available
  • Various switching functions


BARTEC miniature switches are used in areas with of limited space for a flameproof switching element. They are especially suitable for applications in valves, thermostats, push switches, servo components, level metres and switching gears. The smallest Ex d miniature switch in the world is encapsulated in a plastic enclosure. The leads or cable tail are potted in at the base. The standard version of the BARTEC miniature switches contains fine silver contacts. Other contact materials such as gold plated silver or solid gold are available for low currents and voltages.

The insert switch with wires is available as a building block for your explosion-proofing solution. These insert switches are tested and approved by PTB (the Federal Physical-Technical Institute) according to ATEX-Guideline 2014/34/EC. After installation, the complete device is tested by an authorized institution. Thanks to its PTB approval, the microswitch itself needs not be individually tested. The leads are individually marked. The length of the cable is 50 cm (standard). Other lengths can be supplied on request. For the connection of the cores we recommend our BARTEC Ex Mini-terminals.

Technical Data

Protection class IP 54 (IEC 60529)
Dimensions see data sheet
Material duroplast, plunger/additioanl actuator stainless steel
Installation Tightening torque of fixing screws max. 0.6 Nm
Mechanical life > 107 switching cycles
Weight with 0.5 m cores apporx. 25 g

with 1 m cable approx. 50 g

Voltage see data sheet
Current see data sheet
Connection cast-in cores or cable 0.75 mm²

Manuals/Operating Instructions/Guides

Installation and Assembly Instructions – Miniature Insert Switch

Data Sheets

Data Sheet – Miniature Limit/Insert Switch