RBK 3
RBK fuse switch disconnectors are designed for distribution of electricity and protection of electrical equipment against short-circuits and overloads with industrial fuse links.
Technical data
| Item | |
Rated thermal current Ith |
A |
Rated voltage Un |
V |
Rated switching current Ie |
A |
Rated switching voltage Ue |
V |
Rated short circuit making current |
kA |
Rated insulation voltage Ui |
V |
rated power dissipation |
W |
Rated short-circuit making capacity Uimp. |
kV |
Rated short circuit withstand current |
kA |
Rated frequency |
Hz |
Mechanical durability |
- |
Electrical durability |
- |
Protection degree |
IP |
Weight |
kg |
Size of fuse links |
- |
| Item | AC-22B | DC-21B | |
Rated thermal current Ith |
A |
630 | 630 |
Rated voltage Un |
V |
690 | 690 |
Rated switching current Ie |
A |
630 | 630 |
Rated switching voltage Ue |
V |
690 | 250 |
Rated short circuit making current |
kA |
25 | 25 |
Rated insulation voltage Ui |
V |
1000 | 1000 |
rated power dissipation |
W |
60 | 60 |
Rated short-circuit making capacity Uimp. |
kV |
12 | 12 |
Rated short circuit withstand current |
kA |
100 | 100 |
Rated frequency |
Hz |
50-60 | 50-60 |
Mechanical durability |
- |
1000 | 1000 |
Electrical durability |
- |
200 | 200 |
Protection degree |
IP |
20 | 20 |
Weight |
kg |
~5,00, ~5,90 | ~5,00, ~5,90 |
Size of fuse links |
- |
3 | 3 |
Application
RBK type fuse switch disconnectors are designed for power distribution and protection of electrical equipment against effects of short-circuit faults and overloads by use of industrial fuse links.
Operating conditions
- to be installed in the room free of any dust, aggressive or explosive gases
- for moderate, marine and tropical climate
- altitude up to 2000 meters above sea level
- outdoor – in cabinets with protection degree > IP 34
- ambient temperature from -25°C to +55°C – but in case of use of disconnectors in temperature from +41°C to +45°C current value Ith should be reduced by 5% and within temperature range of +46°C to +55°C current value Ith should be reduced by 10%
- for outdoors installation RBK fuse switch disconnectors should be mounted in cabinets with protection degree IP34 or higher
Construction
RBK fuse switch disconnectors consist of following parts:
- three pole main base with spring-loaded contacts designed for connection of circular or sector-shaped cables, cables with lug terminals or busbars
- detachable cover with fuse links
- top protective contact cover with arc chutes, bottom protective contact cover
Thermoplastic parts of RBK fuse switch disconnectors are made of fibre glass strenghtened, flame retardant polyamide and polycarbonate. Silver plated contacts provide low power loss. Depending on clamp type, RBK fuse switch disconnectors enable user to connect circular or sector-shaped cables,cables with lug terminals or busbars.
Versions
| RBK 3/360 A | Type of cable clamps |
Type | Catalogue number |
| Direct connection of conductors with live cable lugs | bridge | RBK 3 | 63-811501-021 |
| For conductors with pressed cable lugs | terminal screw | RBK 3-M | 63-811501-041 |
| The installation on to busbar (60 mm), cable from the top or from the bottom | terminal screw | RBK 3-S | 63-811502-021 |
RBK 3 - the installation with bottom fitting
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RBK 3-S - the installation on to busbars
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Clamps
| Designation | TYPE OF CLAMPS IN RBK 3 | ||
| Clamp | bridge 2 x M8 x 35 | screw terminal M10 x 30 |
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| Drawing of the clamp |
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| Cross section of cable conductors | cable Cu/Al 50 ÷ 185 mm2 |
cable with lug up to 240 mm2 |
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| Cu busbar |
maximum width 35 mm | ||
| Torque moment | 10 Nm | 20 Nm | |
| Spacing of fixing holes for RBK 3 type fuse switch disconnector to be installed with bottom fitting |
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Trade contact
Apator S.A.
ul. Żółkiewskiego 21/29,
87-100 Toruń, Poland
Foreign Trade Department Switchgear Equipment
Name:Rafał Kamiński Function:Area Sales Manager Phone:+48 (56) 6191 627 Mobile phone:+48 506 009 338 Information: Central Europe, The Balkans, Turkey (English) |
Name:Michael Roclawski Function:Area Sales Manager Phone:+48 (56) 6191 492 Mobile phone:+48 506 009 339 Information: Germany, Austria, Switzerland, Western Europe, Asia, Africa (German) |
Name:Grzegorz Błaszkiewicz Function:Logistics (Russian) Phone:+48 (56) 6191 316 Mobile phone:+48 506 009 374 |