Flameproof Gateend box is rated for 150/300A 550V 3ph 50c/s system for controlling Coal cuttingmachines. The gateend box comprises of two chambers. The upper chamber houses 150/300A off loadtriple pole isolator suitably interlocked with the door and 150/300A copper busbars and CT operatedAmmeter. The lower chamber houses suitably rated Air break contactor , control transformer, overloadrelease, CBT operated earth leakage Release and ON/OFF push button. The Geetend box is fitted withincoming terminal chamber With cable box and outgoing plug & socked and mounted on a skid base.