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Three-phase low voltage junction box
It facilitates the junction of the link cables to the public lighting system and provides short-circuit protection for users. It allows the easy detection of network malfunctions as well.
Functions
- it visibly separates the force circuit (three-phase) in order to protect the operating personnel, through the removal of safety fuses or insulator lugs from the terminal board.
Technical features:
| Thermal and usage rated current |
Max. 100A |
| Rated power |
400/230 V a.c. |
| Rated insulation voltage |
690 V a.c. |
| Rated frequency |
50Hz ÷ 2% |
| Protection standard |
IP 54 |
Component parts
- Metallic or polycarbonate box which provides the normal IP 54 protection standard
- Individual supplying columns for lighting units, provided with LF type fuses
- Junction elements consisting of: three-phase supplying connection/column terminal board provided with SIST type fuses/connectors
- Pressure gaskets or fittings for input/output supplying cables
- Fastening accessories on poles
Operating conditions:
| Erection location |
Outdoor |
| Climate group |
WDr/CT (moderate climate: hot dry/cold temperate) |
| Environment ambient temperature range during operation |
-25 ÷ 40°C |
| Environment ambient temperature range during transportation, storing and erection |
-40 ÷ 50°C |
| Average ambient temperature in 24 hours |
35°C |
| Air relative humidity |
90% at 20°C |
| Maximum altitude |
2000 m |
| Pollution degree |
3 |
| Over-voltage category |
Category III |
| Electro-magnetic mediums |
Environment A |
| Life span |
25 years |
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Other information:
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