(Panel design) Door of low-voltage compartment Opening for locking or un locking the low-voltage compartment door Option: Capacitive voltage detecting systemfor feeder and busbar High-voltage door Inspection window for checking the switchingdevice truck Opening for locking or unlocking the high-voltage door Opening for mechanical charging of circuit-breaker closing spring Openings for switchingdevice truck operation Opening for earthing-switch operation Pressure relief duct Busbars Bushings Post insulators Block-type current transformer Openings formanual operation (ON/OFF) of the circuit-breaker Inspection window for reading the indicators Door handle Option: Make-proof earthing switch Cable sealing ends Option: Voltage transformer Earthing busbar Low-voltage plug connector Vacuum interrupters Switching-device truck