Abstract: An electric motor of an AC-operated, handheld power tool, with a stator that has multiple windings that are accommodated in a laminated stator core and are electrically insulated therefrom with basic insulation, in which stator a rotor is supported so as to be rotatable about an axis of rotation, wherein the rotor has a rotor shaft on which a laminated rotor core with a multiplicity of permanent magnets is held, which laminated rotor core is electrically insulated from the rotor shaft, characterized in that the stator is enclosed by a motor housing that is electrically insulated from the windings of the stator, and in that a supplementary electrical insulation is formed between the motor housing and the rotor shaft.

Abstract: An EC motor for an electric hand tool having a stator in which a rotor is rotatably mounted, which comprises a rotor lamination stack, which has a passage opening and is formed of individual laminations, and a rotor shaft which is cast in the passage opening of the rotor lamination stack by means of a casting compound, and having a plurality of permanent magnets, which are received in the pockets formed in the rotor lamination stack. An annular channel, which is connected to the pockets in a fluid-conducting manner via radial channels, each of which is formed of a plurality of channel sections formed in adjacent laminations of the rotor lamination stack, is formed between the rotor shaft and the wall of the passage opening for supplying the casting compound from the annular channel to the pockets. A method is also provided for producing a rotor for an EC motor.

Abstract: An EC motor for an electric hand tool having a stator in which a rotor is rotatably mounted, which comprises a rotor lamination stack, which has a passage opening and is formed of individual laminations, and a rotor shaft which is cast in the passage opening of the rotor lamination stack by means of a casting compound, and having a plurality of permanent magnets, which are received in the pockets formed in the rotor lamination stack. An annular channel, which is connected to the pockets in a fluid-conducting manner via radial channels, each of which is formed of a plurality of channel sections formed in adjacent laminations of the rotor lamination stack, is formed between the rotor shaft and the wall of the passage opening for supplying the casting compound from the annular channel to the pockets. A method is also provided for producing a rotor for an EC motor.

Abstract: A terminal block assembly is provided, comprising a plurality of terminal blocks mounted on a common horizontal support member, including a supply terminal block connected with a voltage source, and a plurality of distribution terminal blocks connected with a plurality of loads, respectively, characterized in that the length and height dimensions of the terminal blocks are the same, but the width of the supply terminal block is greater than that of the distribution terminal blocks, and that the supply conductor contact arrangements of the supply terminal block are designed for connection with a supply conductor having a relatively large cross-sectional area, while the distribution conductor contact arrangements of the distribution terminal blocks are designed for connection with distribution conductors having a relatively small cross-sectional area. A conductive comb member extends transversely across the assembly to interconnect the electrical circuitry contained within the terminal block housings.

Abstract: A terminal block assembly is provided, comprising a plurality of terminal blocks mounted on a common horizontal support member, including a supply terminal block connected with a voltage source, and a plurality of distribution terminal blocks connected with a plurality of loads, respectively, characterized in that the length and height dimensions of the terminal blocks are the same, but the width of the supply terminal block is greater than that of the distribution terminal blocks, and that the supply conductor contact arrangements of the supply terminal block are designed for connection with a supply conductor having a relatively large cross-sectional area, while the distribution conductor contact arrangements of the distribution terminal blocks are designed for connection with distribution conductors having a relatively small cross-sectional area. A conductive comb member extends transversely across the assembly to interconnect the electrical circuitry contained within the terminal block housings.