Number
A circuit-breaker in which the contacts open and close in air at atmospheric pressure.
A physical object that is intended to bring air to a specified quality.
A physical object that is an assembly of busbar, bus duct enclosure, busbar insulation mounts etc.
A mechanical switching device that at regular intervals interrupts an electric current.
A switchgear and controlgear that is an insulated panel carrying terminals, fuses, etc, for controlling a number of subsidiary electrical circuits.
A heater in which electric energy is converted into heat for useful purposes.
A starter in which the force for closing the main contacts is provided exclusively by electrical energy.
A switch that turns electrical current on and/or off.
An electronic ac converter for changing the frequency.
An electronic converter that changes direct electric current to single-phase or polyphase alternating currents.
A physical object that by the fusing of one or more of its specially designed and proportioned components, opens the circuit in which it is inserted by breaking the current when this exceeds a given value for a sufficient time.
A circuit-breaker in which the arc develops in a blast of gas.
An electric cable, that is also an electric heater, with or without a shield or a metallic sheath, intended to give off heat for heating purposes.
A physical object that is a closed, rigid box or casing used to enclose and protect the junctions of electric wires or cables.
A circuit-breaker in which the contacts open and close in oil.
An electric cable intended for transmission of electric power.
A physical object intended to supply electric power according to specified levels and tolerances.
A physical object that is a general term covering switching devices and their combination with associated control, measuring, protective and regulating equipment, also assemblies of such devices and equipment with associated interconnections, accessories, enclosures and supporting structures.
A circuit-breaker in which the contacts open and close within a highly evacuated envelope.
A physical object that consists of an electric motor and controller that is used to adjust the motor's operating speed.