The AT-EGS201 Explosion-Proof Emergency Gas Start Button is a multi-wire manual control device designed for gas fire extinguishing systems in flammable and explosive environments. It is typically installed near the gas discharge area to provide manual emergency release and emergency stop functions.
When on-site personnel confirm a fire, they can open the transparent cover and press the black glass start button to directly trigger the gas release output. Before gas discharge, if personnel confirm that no fire has occurred, the red stop button can be pressed to abort the gas discharge output. The plug-in structure and cover-protected operation greatly improve safety and prevent accidental actuation.
The device features a robust flameproof and dust-ignition-proof composite enclosure with IP66 protection rating, effectively resisting dust contamination and humid air. It complies with the latest GB/T3836 explosion-proof standards and is suitable for Zone 1 / 2 gas and Zone 21 / 22 dust hazardous areas in petrochemical plants, oil depots and similar industrial sites.
Explosion-proof emergency start / stop button for gas fire extinguishing systems
Manual gas release (start) and abort (stop) functions
Start and stop push buttons located behind a transparent protective cover to prevent misoperation
Plug-in structural design for easy installation and maintenance
Explosion-proof marking: Ex db IIC T6 Gb, Ex tb IIIC T80°C Db, Ex db IIB T6 Gb
Enclosure protection rating IP65 / IP66 for harsh industrial environments
Clear LED status indication: Start (red) always on, Stop (green) always on
Suitable for Zone 1 & Zone 2 flammable gas and Zone 21 & Zone 22 combustible dust areas
Complies with multiple GB/T explosion-proof and low-voltage switchgear standards
| Item | Specification |
|---|---|
| Model | AT-EGS201 |
| Product Type | Explosion-proof emergency start / stop button |
| Explosion-Proof Marking | Ex db IIC T6 Gb, Ex tb IIIC T80°C Db, Ex db IIB T6 Gb |
| Structure Type | Flameproof & dust-ignition-proof composite type |
| Working Voltage | DC 16–32 V |
| Alarm / Control Current | 0.06 mA |
| Start / Stop Indication | Start indicator: red, always on; Stop indicator: green, always on |
| Relative Humidity | ≤ 95% RH (non-condensing) |
| Atmospheric Pressure | 80–110 kPa |
| Enclosure Protection Rating | IP65 / IP66 |
| Overall Dimensions | 119 × 150 × 80 mm |
This explosion-proof emergency start / stop button is suitable for any gas fire extinguishing system installed in hazardous areas, including:
Petrochemical plants – tank farms, pump rooms, compressor rooms, flare areas
Oil & gas facilities – oil depots, gas filling stations, LNG / LPG storage areas
Power plants & substations – cable tunnels, control rooms with gas suppression
Chemical and pharmaceutical factories – production lines and solvent storage rooms
Paint shops & spray booths – areas with flammable vapors and dust
Warehouses & logistics centers – flammable liquid and gas storage areas
Offshore platforms & marine applications – engine rooms, control rooms with gas flooding systems
Any Zone 1 / Zone 2 flammable gas or Zone 21 / Zone 22 combustible dust area equipped with gas fire extinguishing systems that require manual release and abort control.
