The claimed utility model - construction electrical apparatus designed for measurement and metering of electricity in the domestic and industrial sectors. The design of its overall and mounting options DIN43880-1988 meets the standard requirements for embedded devices. The device comprises a top cover, two cover of the terminal block and the base. Housing parts are made of plastic by injection with formed on them fastening elements intended for fastening internal device components, such as liquid crystal display or readout device, the circuit board assembly, the terminal block and the housing parts with one another, with virtually no additional anchorages besides filling screws to ensure sealing reliability and evidence of unauthorized access. Caps terminal pads are T-shaped and are detachably fixed on a top cover of a long rib into the groove the latter and are mounted further restoratives screws countersunk in the housing, while in the field of sealing are provided guide grooves for ease of use the filling material (fishing line, wire) . Depending on the destination unit and / or at the request of the customer, the appliance can be used with a terminal block cover different surface may be provided a compartment for removable batteries, as well as an optical sensor. The claimed device allows to simplify the structure of the electric appliance, which leads to a reduction in product assembly time, and versatility of the basic components and their arrangement, the possibility of expanding the utility model for different types of instruments, such as electricity meters and leads to their reduction in price.
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