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Service box for underfloor installation Legrand 088090

Service box for underfloor installation Legrand 088090

Starting at
€33.29 +VAT
CZK 822.65
  • Manufacturer: Legrand
  • Manufacturer Code: 088090
  • EAN: 3414970755735
  • Material side wall: Steel
  • Built-in opening for built-in unit: Rectangular
  • Nominal dimension [mm]: 225
  • Min. height finishing layer [mm]: 65
  • Number of appliances to build in: 6
Response time: usually up to 2 days
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Switchgears are plastic or metal boxes in which electrical apparatus, wiring and accessories are installed. Their purpose is to distribute the energy supplied to the customer into individual circuits that supply loads such as electrical appliances or lighting. A special case of switchgear is a ready-made, small electrical building box, equipped with fittings and protections.

Switchboards in electrical installations and building switchboards

In buildings where the presence of electrical installation is required by law, at least one electrical switchboard is installed, realized as surface-mounted or flush-mounted, usually modular (especially in single- and multi-family housing) and hermetic or with a lower degree of protection - depending on the environmental conditions in which it is located.

During construction, as well as in temporary conditions, it is acceptable to use building switchboards.

Surface-mounted and flush-mounted switchgear and hermetic enclosures

Electrical switchboards are available as surface-mounted and flush-mounted switchboards. Surface-mounted panels, which are less aesthetically pleasing, are mounted on walls, particularly in industrial applications and non-residential buildings. Sometimes they are also installed in houses or flats, when due to insufficient wall thickness it is not possible to install a flush-mounted switchgear. Because of their typical purpose, hermetic casings are often found among surface-mounted switchgears. They provide protection of devices installed inside against harmful and dangerous action of moisture, dust or chemical substances.

Flush-mounted electrical boxes are a solution more common in residential and public buildings. They are installed in wall recesses in such a way, that the front of the box faces the wall, and wires running under the plaster are not visible. Usually in these applications switchboards are also realized as modular, which are used to mount electrical apparatus of a standardized width. There are single-row or multi-row modular switchgears, where a row can contain from a few to several dozen modules depending on the manufacturer and the type of switchgear.

Building switchgear

Market available building switchgears, or so-called er betki, differ among others in the equipment of apparatus and electrical equipment, as well as the way of mounting. Some are offered in a set with a stand, others are designed for wall mounting. Some are offered with a stand, others are designed to be wall-mounted. When deciding to buy a "betka" you should also pay attention to the IP protection degree.

Building switchgear tightness

The minimum degree of protection allowed for the switchgear outdoors is IP 44, but such a box requires a roof, just like the "erbetka" with IP 55. If the casing has protection level IP 66, the switchgear can be freely used without additional roofing. The degree of protection should be selected according to needs, because the higher the IP, the more expensive the switchgear. For building switchgear installed indoors, protection level IP 44 is usually sufficient, while for RB, which is installed outdoors, it will be right to buy switchgear with higher hermeticity.

RB equipment

Offered in the trade ready-made switchgears are equipped with various apparatus and accessories, giving the customer a wide range of possibilities to choose the most suitable product for specific working conditions. Although in many cases the simplest construction electrical boxes work well, it is usually worth buying an "erbetka" equipped with:

  • overcurrent circuit breakers,

  • at least two single-phase sockets,

  • at least two three-phase sockets.

Overcurrent circuit breakers protect the sockets of the switchboard, thereby reducing the number of events when, due to a fault on one circuit, due to the lack of selectivity of protection stands the entire building. Some electricians also recommend equipping the RB with a residual current circuit breaker, which protects against electric shock, as well as a meter - to control the consumption of electricity, which is very expensive in the case of construction tariffs.