RTLs

Operating environment conditions

The switchgear are designed for operation in a temperate climate and are suitable for installation in the following environmental conditions:

• in enclosed spaces free from dust and chemical gases that are active or pose an explosion hazard, and free from electrically conductive dust

• at the following ambient temperature:
– short-term peak +40°C (313 K)
– highest daily average +35°C (308 K)
– lowest sustained temperature: -25°C (248 K)

Switchgear design

The cuboid frame structure of the switchgear is constructed from thin-walled perforated sections with a semi-closed U-profile measuring 50x25. The pitch is 25 mm. The sections are joined together using corner connectors. Depending on the configuration and intended use, the load-bearing frame is supplemented with additional horizontal and vertical sections made from sections joined by straight and angle connectors.

The switchgear frame is made of electro-galvanised sheet metal.
The frame is covered at the top and sides by fixed covers, and at the front by a removable cover and a door, behind which there is a mounting plate. The covers and door are made of 1.5 mm thick sheet metal, powder-coated, as standard in RAL 7032.

The door opening angle is approximately 90°.

As the switchgear are typically installed against a wall, the rear is open as standard, but may be additionally covered with a flat cover made of galvanised sheet metal or with bent, painted covers, subject to prior agreement with the manufacturer.

Standards compliance

The switchgear meet the requirements of the following standards:

• PN-EN 60439-2003+A2:2006 'Low-voltage switchgear and controlgear assemblies Part 1: Type-tested and partially type-tested assemblies'.

• PN-EN 60529-2003 'Degrees of protection provided by enclosures (IP rating)'

Dimensions