What Might Happen To A Wall Switch When A Flammable Gas Mixes With Air To The Point Of Explosion?

In a closed or semi-closed environment, leaked flammable gas mixed with air, if the concentration falls within a certain range, can create a mixture with flammable and explosive potential. This range is defined by the industry as the explosive limits, that is, between the lower explosive limit and the upper explosive limit, where an explosion or violent combustion reaction may occur upon contact with an ignition source.

When such a gas mixture comes into contact with Wall Switch, the electric arc inside the switch, the contact spark, or even the ordinary energizing process can become an ignition source. Electrical contacts generate momentary arcs when switching states; these sparks can easily ignite combustion or even an explosion in the presence of an explosive mixture. This ignition is particularly likely to occur when the concentration of flammable gas is between the lower and upper explosive limits.