TECHNICAL CHARACTERISTIC
Rated voltage | 500 V | Supply line | cable, max 240 mm2 | |
Nominal frequency | 50 Hz | Method of fastening | for flushing into a hole | |
Rated current | 400 A | Nominal dimensions | 1060 x 500 x 255 mm | |
Short-circuit resistance | 25 kA | Instrumentation | 12 fuse bases SP 2 | |
Protection class | IP43 | Bus bar | medium, protective with screws M10 | |
Type of connection | for continuous connection | Door closure | according to STN 35 97 54 | |
Protection of non-live parts |
zero adjusting or earhing |
IEC | 60439-5 | |
USE |
The SR 3 distributing and fuse box is used for branching, distributing and protection of cable distribution network up to 500 V, 400 A, 50 Hz by underground conductors of up 240 mm2. Maximum current load of the box is 400 A, whereas sum total of protected current cable outlets mustn't get over Im 400 A.(For example: 1x200 A+3x63 A.) |
TECHNICAL DESCRIPTION |
The box is made of steel sheet thick 3 mm, hot-dip galvanized.
The lace hole for incoming and excursory tension line is in lower side.
The support lath of fuses is welded to the lateral sides of the box.
The door of the box has a dip flash symbol according to STN 34 5550. | |
NOTE |
The key to lip locks, plug cartridges and fused grip are not included in the supply. It is forbidden to use PH fuse plugs with high losses! |
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