Contact rail feeding switchgears are applied for dead-end siding with and without ditch contact rail feeding, for commuting of main-line track orifice plate circuit — dead-end orifice plate (maintenance inspection track section). They provide distribution and power supply with voltage 825 V and rated current 4000 A.
Cabinets represent double-side serviced three-compartment complete device, including power devices for power distribution (automatic and manual control), control, indication, signaling and protection system. Disconnectors power busbars and commuting power part are separated from control zone with mounting panels. There are overview windows on front doors for disconnectors position visual observation.
Connection of power cables to disconnector is provided from the top through cable clamps and special marine pressure seals installed on the roof.