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Explosion proof knob operated control units for hazardous area Zone 1 & Zone 21 & mines

Ex db / Ex tb – IP66

Units series M are suitable to operate rotary CAM switches. They are available in different diameter of knob. The components are made of galvanized brass and the external knob is made of polycarbonate.

They are suitable to be installed in harzardous area Zone 1 & Zone 21 and they are also certified for mines group I M2 (with metal knob).


  • Type of protection: Ex db / Ex tb

  • Degree of protection: IP66

  • Certified for:

    • Gas group IIB+H2 or IIC
    • Dust group IIIC
    • Mines group I M2
  • Max range ambient temperature: -50°C ÷ +80°C

  • Materials used:

    • Galvanized brass (components)
    • Polycarbonate (external knob)
  • ISO 262 Threads: M20x1.5 or M25x1.5

  • Max rated voltage: 500 Vac/dc

  • Max rated current: 16 A

  • Weight: 115 g up to 250 g

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