Cable Assemblies with Metering CAM-103…108
Metered Cable Assemblies (MCA), or Metered Cable Cabinets, are used for receiving, metering, and distributing three-phase AC electrical power at 380/220 V and 50 Hz in systems with a solidly grounded neutral. Their primary function is to protect outgoing lines against overloads and short-circuit currents.
Legend
Notes on the designation structure:
- *The rated currents of the switch-disconnector–fuse units are specified; the fuse-link ratings are determined by the project.
- The need for metering on each feeder is determined by the project.
The cabinets are recommended for use:
- when reconstructing electrical networks to increase the number of feeders by tapping into an existing cable;
- to increase the number of outgoing lines by connecting them to the feeder of the nearest transformer substation.
The cabinets are available with incoming metering (transformer-operated) and with:
- direct metering — for feeders rated up to and including 100 A;
- transformer-operated metering — for feeders rated up to and including 250 A.
The cabinet consists of two compartments: a power compartment and a metering compartment. The compartment doors are lockable.
The cabinet design provides:
- bottom entry for incoming and outgoing lines;
- cable connection (plug-in contacts without cable lugs) for cables with cross-sectional areas of up to:
- 240 mm² — for 250 A and 400 A lines;
- 70 mm² — for 100 A lines.
- The configuration of the assemblies with switch-disconnector–fuse units for cable lugs is specified when ordering.
- Meters of any type can be installed.
Meters are not included in the scope of supply.
MCA cabinets must be installed on a support frame (included with the MCA) and secured to the building wall. Installation without wall anchoring is not recommended.
Technical specifications are provided in Table 1.
The general view and overall dimensions are shown in Fig. 1.
Climatic version: U3 according to GOST 15150.
Cabinet ingress protection rating (except for the bottom): IP54 according to GOST 14254.
The cabinets comply with TU U 27.1-45149048-001:2023.


| Cabinet Type | Dimensions of MCA-800 (TT) Cabinet | |
|---|---|---|
| Number of 250 A Feeder Lines | Number of 100 A Feeder Lines | |
| MCA-103…108 | - | 3 min. … 8 max. |
Table 1. Technical Specifications of the Cabinets
Note: The need to install metering on feeder lines is determined by the project. The number of transformer-operated meters is limited to 2, while the total number of installed meters must not exceed 7.