PB135 GRP Explosion Proof Push Button

GRP: Glass Reinforced Plastic
The PB135 push button range has been approved for use in potentially explosive atmospheres and harsh environmental conditions.

Typical applications are Oil and Gas, On-shore and Offshore, Chemical, Petrochemical, Refineries & Marine locations etc.

It is compatible for use with a PLC, DCS and ESD systems via 4-20mA output. It is ideally suited for use in fire alarm systems and an addressable option with diode fitted is available.

The unit has the option for either a key reset or self reset. The range also offers an additional visual LED indication option; red, green (or both) can be fitted. When fault or alarm status arises the green LED will be overridden by the red LED. The design allows for termination inside the unit.


  • Approved by ATEX, IECEx
  • CQST (Available on request only)
  • ATEX: II 2G Exd IIB +H2 T4 – T6 (incorporating IIA)
  • Zones 1, 2, 21 & 22
  • Conforms to EN (IEC) 60079-0, EN (IEC) 60079-1 and EN54
  • Dustproof & Weatherproof


  • Enclosure:
    GRP (Glass Reinforced Plastic)

Approval & Conformities