Rotary switch (1, 101) comprising: a rotor (15, 115) supporting at least one electro-conductive rotary contact bridge (19, 119); a plurality of stationary contacts (21, 121); a housing (3, 103) accommodating the stationary contacts and the rotor. The housing comprises a plurality of sides (5, 105) extending between a top side and a bottom side. At least two of these sides (5, 105) are provided with access openings (62, 62) providing access to an associated stationary contact. These sides make an angle with each other. The housing may for example be rectangular.

The electrical switch includes three fixed contacts and a rotatable knife contact being connected with a permanent electrical connection to a third one of the fixed contacts and including at least one pair of longitudinal blades. The rotatable knife contact connects in a first switching position only a first one and a third one of the fixed contacts electrically together, and in a second switching position only a second one and a third one of the fixed contacts. The rotatable knife contact connects further in a zero switching position the first, the second and the third fixed contact electrically together.

An electronic vapor provision device or component therefor has two or more user controls each operable by an actuating characteristic to allow a user to alter an associated operational parameter of the device, and all the user controls share a common actuating characteristic.

A disconnector that includes at least two modular contact boxes, each one having a box-like body coupled to a contiguous box-like body of a contiguous modular contact box. Each box-like body defines a seat that accommodates a moving contact and two peripheral seats, each of which accommodates a corresponding fixed contact that can be accessed from outside the modular contact box. The at least two box-like bodies include at least one first box-like body, in which at least the outward-facing surface has a first finish, and at least one second box-like body, in which at least the outward-facing surface has a second finish, the contacts of the first box-like body or bodies having one polarity and the fixed contacts of the second box-like body or bodies having an opposite polarity.

A disconnector that includes at least two modular contact boxes, each one having a box-like body coupled to a contiguous box-like body of a contiguous modular contact box. Each box-like body defines a seat that accommodates a moving contact and two peripheral seats, each of which accommodates a corresponding fixed contact that can be accessed from outside the modular contact box. The at least two box-like bodies include at least one first box-like body, in which at least the outward-facing surface has a first finish, and at least one second box-like body, in which at least the outward-facing surface has a second finish, the contacts of the first box-like body or bodies having one polarity and the fixed contacts of the second box-like body or bodies having an opposite polarity.

The electrical switch includes a first and a second fixed contact, and a rotatable knife contact including at least one pair of blades being flexibly connected to each other and rotating around a rotational axis. A third fixed contact is positioned on an opposite side of the rotational axis in relation to the adjacent first and second fixed contact and a middle portion of the rotatable knife contact is electrically connected to the third fixed contact. The rotatable knife contact connects in a first switching position the first fixed contact and in a second switching position the second fixed contact to the third fixed contact.

Implementations of the subject matter described herein provide a switching apparatus. The switching apparatus includes: a switching component including a first main shaft, which is adapted to selectively connect and disconnect at least one circuit in response to the rotation of the first main shaft; and an operating mechanism including a second main shaft for actuating the first main shaft to rotate via the second main shaft; wherein the switching component further includes a first interface, and the operating mechanism further includes a second interface, and the second main shaft to be detachably coupled to the first main shaft in response to the engagement of the first interface and the second interface.

A change-over switch including a frame having a first side wall and a second side wall, a first supply terminal, a second supply terminal, a load terminal, and at least one gas flow opening for discharging gasses from the frame. The second side wall faces substantially opposite direction relative to the first side wall. The change-over switch is adapted to selectively provide a first connection between the first supply terminal and the load terminal, and a second connection between the second supply terminal and the load terminal. The first supply terminal and the second supply terminal project from the first side wall, and the load terminal projects from the second side wall. The at least one gas flow opening is formed in the second side wall.

A utilization unit of an electric switch includes an actuator module which includes actuators and power transmission apparatus to operate the electric switch, a power module which includes power supply means for the actuators of the actuator module, a control module which includes control means to control the power module, and data transmission means. The actuator module, the power module, and the control module constitute a modular structure, wherein the power module and the control module are detachably connected to each other and the actuator module so that the power module and the control module are both separately replaceable in the utilization unit.

The electrical switch includes a first and a second fixed contact, and a movable knife contact including at least one longitudinal pair of blades being flexibly connected to each other, wherein the blades form, in a switching event, contact with contact portions of the first and/or the second fixed contact. Opposite surfaces of the contact portions of the first and the second fixed contact include a roughened area and the inner surface of each blade includes a protruded area or opposite surfaces of the contact portions of the first and the second fixed contact include a protruded area and the inner surface of each blade includes a roughened area.