適用范圍Application 1區、2區危場所。 IIA、IIB類爆竹性氣體環境. Can be used in Zone 1 and Zone 2one 2 dangerous places. Can be used in IIA,IIB group explosive atmosphere. 型號含義Model implication 產品特點 Features 外殼為鋼板焊接而成. 內裝有自耦變壓器,交流接觸器,時間繼電器. 中間繼電器,熱繼電器,電流互感器,轉換開關 熔斷器,電壓表,電流表,指示燈等. 具有過載,短路,失壓,斷相保護等功能. 符合GB3836-2000,IEC60079 標準要求. The shell is welded of steel plates. Inside is arranged varitran,AC contactor,time relay,interposiong relay,thermal relay,current transformet,selector,fuse,voltmeter, Ammeter and indicator etc. Steel tube wiring or cable wiring. Suitable for GB3836-2000,IEC60079 standard request.