EF Series

Explosion proof emergency pushbutton
Ex db / Ex tb – IP66

Emergency pushbutton series EF is a spring return mushroom type. So after manual release the device will return to the initial condition. Push button series EF can be installed up to 4 electrical contacts or normally close or normally open or both type.

The device is extremely compact but with high resistance. It is suitable to be installed in classified harzardous area Zone 1 & Zone 21 and also certify for mines group I M2 (with metal ring proctection).


  • Type of protection: Ex db / Ex tb

  • Degree of protection: IP66

  • Certified for:

    • Gas group IIC
    • Dust group IIIC
    • Mines group I M2
  • Max operating temperature: -60°C ÷ +180°C

  • Material used:

    • Nickel plated brass
    • Stainless Steel AISI 316L
  • ISO 262 Threads: M20x1.5 or M25x1.5

  • Max rated voltage: 690Vac / 440Vdc

  • Max rated current: 10A

  • Rated cross-section: 0,5 ÷ 2,5 mm2

Emergency Explosionproof Pushbutton spring return for hazardous area Series EF
Certificazione CE - RIBCO S.r.l.

Assembly instructions 

Safety instructions 

IECEx Conformity 

ATEX Certificate 

IECEx Certificate 

Other options available

Explosionproof Emergency Pushbutton spring return for hazardous area Series EF3

EF3 – Up to 6 electrical contacts