LBSH type Load Break Switches are used in HMH series, metal enclosed modular Switchgears. The active sections of the Load Break Switches are present in SF6 gas ambiance closed with sealed pressure system inside the epoxy resin frame. During its normal operation lifespan of 20 years, it does not require any gas refill nor any maintenance. LBSH LBS have three poles and two positions. The earthing switch which quickly closes at the time of short circuit is in SF6 gas environment and inside a resin frame. This feature of the LBSH switch disconnectors offers an additional safety feature for the operating staff. Thanks to the mechanical and electrical interlocking systems between the Load Break Switch and the Earthing Switch, possibility of a wrong-manoeuvre is prevented by these interlocking systems.