Use:for kinds of electric installation for metallurgy,hot work,Petroleum,chemical industry, natural  gas,kerosene,etc. special environments.

Property: suitable for rated voltage not more than 600V,rated temperature not more than 500oC.

Installation condition:fixed.

Fire performance:not fuse below 800 with 90 minites.

Opposite temperature :65% can use under bending and fire,no toxic and harmful gases.

Standard:GB12666.6-90   Q/321281