The limit switch to protect explosion is a switching and control device suitable for universal applications in the Multiplicity of duties in the automatic control systems in potentially hazardous area. Hazardous area includes the place where explosive atmosphere of dangerous quantity can occur as a result of local and operational condition. An explosive atmosphere is a mixture of air and combustible gases, vapor, fume of cust under atmospheric conditions where combustion expands itself after ignition. Whether or not an area in the open air or inside and enclosed space is to be considered as hazardous area in the sense of the regulations or provisions can exclusively be judged by the relevant authorities.
