A switching device operable between different set-points for changing the state of operations of an electrical system comprising: a housing with a recess (110, 112) formed on an inner perimeter surface of said housing at any set-point; and a knob disposed within the housing and is turned to switch between different set-points, said knob includes a latch and a latch triggering mechanism, said latch is selectively releasable from the knob by the latch triggering mechanism to engage into or from the recess (110,112) for locking and unlocking the switching device, said knob includes a handle adapted for displacement between a resting position and elevated position for controlling the latch triggering mechanism; wherein said latch triggering mechanism includes a cam moveable between a first direction and a second direction, which is in opposite to the first direction; wherein during movement of the cam in the first direction, said cam displaces the latch from a first origin position within the knob to a locking position within the recess, thereby locking the switching device; wherein during movement of the cam in a second direction, said cam displaces the latch from the second locking position back to the origin position, thereby unlocking the switching device, wherein said cam includes one or more defined profiles (408, 412) acting against one or more relating defined profiles (403, 415) on the latch resulting in displacement of the latch, wherein during movement of the cam in the first direction, a first defined profile on the cam is arranged to act and slide against a relating first defined profile on the latch so as to displace the latch from the first origin position to the second locking position, characterized in that during movement of the cam in the second direction, a second defined profile on the cam is arranged to slide against a relating second defined profile on the latch to restore the latch from the second locking position to its first origin position. a housing with a recess (110, 112) formed on an inner perimeter surface of said housing at any set-point; and a knob disposed within the housing and is turned to switch between different set-points, said knob includes a latch and a latch triggering mechanism, said latch is selectively releasable from the knob by the latch triggering mechanism to engage into or from the recess (110,112) for locking and unlocking the switching device, said knob includes a handle adapted for displacement between a resting position and elevated position for controlling the latch triggering mechanism; wherein said latch triggering mechanism includes a cam moveable between a first direction and a second direction, which is in opposite to the first direction; wherein during movement of the cam in the first direction, said cam displaces the latch from a first origin position within the knob to a locking position within the recess, thereby locking the switching device; wherein during movement of the cam in a second direction, said cam displaces the latch from the second locking position back to the origin position, thereby unlocking the switching device, wherein said cam includes one or more defined profiles (408, 412) acting against one or more relating defined profiles (403, 415) on the latch resulting in displacement of the latch, wherein during movement of the cam in the first direction, a first defined profile on the cam is arranged to act and slide against a relating first defined profile on the latch so as to displace the latch from the first origin position to the second locking position, characterized in that during movement of the cam in the second direction, a second defined profile on the cam is arranged to slide against a relating second defined profile on the latch to restore the latch from the second locking position to its first origin position.