Everel A1 & SXL5 Switches Tested To Meet EN60079 Explosive Atmosphere Standard. Cost effective, explosion proof switches for the Refrigeration industry. With the planned phase out of HFC gases by the European Union, the need to source alternative refrigerants with lower global warming potential is a challenge for Refrigeration manufacturers.  The use of natural refrigerants such as R-290 (propane) and R600a (isobutene) are popular substitutes.  However, one of the potential concerns for natural refrigerants .

What is a rocker switch? A rocker switch is an on-off switch that rocks back and forth.  When one side is pressed, the other raises with an action similar to a see-saw.    They are easy to use and extremely reliable making them one of the most common forms of switches used worldwide. Rocker switch contact forms: You will commonly see rocker switches referred to as Single Pole (SP) and Double Pole (DP). This relates .