Applications: Ideal for the environment where there is

Category II Class A and B flammable gas or the flammable

mixture of air and steam in Temperature Group T1~T4.

Features: Exd-symbol ExdⅡAT4 、 ExdⅡBT4, Category

Ⅱ:surface highest temperature no higher than T1

（450℃）、 T2（300℃）、T3（200℃）、T4（135℃）; terminal box with three or six terminals for rubber jacket

cable(plastic cable) and steel cable.

Ambient temperature: －15℃~40℃.

Rating voltage:380V、660V、1140V、380/660V、660V/1140V