The principle of explosion-barrier type is based on the European Standard EN13463-1: 2002 The Innovation Concepts and Fire types of the explosion-proof of "Basic Methods and Requirements" in 2002 The explosion-proof type is to take measures to allow internal explosions and prevent flame explosion from passing flame explosion. A type of explosion -proof type is a commonly used explosion -proof type.

Because this type of explosion -proof type lamp shell is generally made of metal material, it is made of good heat dissipation, the shell has high strength and good durability, which is very popular with users. Moreover, many increased explosion -proof lamps, such as lamp holders, link switches, etc., also use explosion -barrier structures. Electric devices with explosion -barbid shells are called explosion -type electrical equipment.

If the explosive gas mixture enters the explosion shell and is ignited, the explosion shell can withstand the explosive pressure of the internal explosive gas mixture and prevent the internal explosion from spreading to the explosive mixture around the shell.

This is a type of gap explosion -proof principle, that is, the use of metal gaps can prevent the transmission of explosion flames and the temperature of cooling explosive products, to achieve the structure of flames to extinguish and cool down, suppress the expansion of explosion.