Miniature Limit 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.

Switches with connector cables have been approved by PTB with EC model test certification. The switches can therefore be mounted at any time into devices and systems which offer mechanical protection – no further testing is required. The connector cable is cast into the back of the switch. The wires are colour-coded. The (standard) cable length is 3 m; other lengths are available on request.

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

Operating Instructions – Miniature Limit switch

Data Sheets

Data Sheet – Miniature Limit/Insert Switch