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BD2 <strong>System</strong> — <strong>160</strong> ... 1250 A<br />
© Siemens AG 2007<br />
Introduction<br />
BD2-AK03 tap-off units up to 125 A<br />
with circuit-breakers, fuse switch-disconnectors, fuse bases,<br />
miniature circuit-breakers and fuse-switches<br />
Features:<br />
• On versions with fuse switch-disconnectors or circuit-breakers,<br />
the cover is interlocked with these switches and can<br />
therefore be opened only when they are switched off.<br />
• Terminal bolts for cables<br />
• Miniature circuit-breakers can optionally be operated from the<br />
outside (mounting unit with 8 MW; 1 MW = 18 mm)<br />
• On versions with fuse switch-disconnectors or circuit-breakers,<br />
the cover is interlocked with these switches and can<br />
therefore be opened only when they are switched off.<br />
• On versions with fuse bases, the load must be disconnected<br />
before the enclosure cover is removed.<br />
• Connections for multi-core or single-core cables are possible.<br />
NSV0_00132<br />
5<br />
BD2-AK03X/L...<br />
Tap-off units BD2-AK02 up to 63 A and BD2-AK03 up to 125 A<br />
configured to customer specifications<br />
Features:<br />
• Device installation to customer specification in compliance<br />
with the requirements for type-tested low-voltage switchgear<br />
and controlgear assemblies (TTA). Engineering, quotations<br />
and delivery through your Siemens contacts in our branches.<br />
• Devices mounted on pre-drilled mounting plates, module<br />
mounting rails or top-hat rails according to EN 60715<br />
NSV0_00133<br />
BD2-AK03...<br />
Steel enclosed tap-off units BD2-AK04 up to 250 A and<br />
BD2-AK05 up to <strong>40</strong>0 A and BD2-AK06 up to 630 A<br />
without cover-integrated switch-disconnector<br />
Tap-off units BD2-AK04 up to 250 A,<br />
BD2-AK05 up to <strong>40</strong>0 A and AK06 up to 630 A<br />
with circuit-breakers, fuse switch-disconnectors and fuse bases<br />
Features:<br />
• Type BD2-AK05 and BD2-AK06 tap-off units > 250 A can be<br />
mounted only on 500 A to 1250 A trunking units.<br />
• Hot-galvanized and powder-coated sheet-steel enclosure,<br />
color light gray, RAL 7035.<br />
• The tap-off units can be mounted and removed only with their<br />
cover open.<br />
• An anti-rotation feature prevents incorrect mounting.<br />
• Cables can be introduced from three sides; use plastic cable<br />
glands with strain relief (not supplied).<br />
• Power pick-up through silver-plated lyra-shaped contacts<br />
• If the PE conductor is used as a PEN conductor, note that the<br />
PE contact of the BD2-AK04, BD2-AK05 and BD2-AK06 tapoff<br />
units have only half the cross-section and therefore cannot<br />
carry the full rated current.<br />
• The connection cable should be supported separately if<br />
required.<br />
BD2-AK05/LS...<br />
Ancillary equipment units<br />
Features:<br />
• The enclosure is made from hot-galvanized sheet steel.<br />
• Cables can be introduced from 4 sides (use plastic cable<br />
glands with strain relief; not supplied).<br />
• Can be combined with tap-off units (BD2-AK02, AK2, AK03,<br />
AK3)<br />
• A standard mounting rail is built-in for component mounting.<br />
• 1 size with 8 MW (1 MW = 18 mm; MW = modular width)<br />
• Without or with mounting unit for external<br />
operation (1 size with 8 MW)<br />
• Installation of devices (e.g. miniature circuit-breakers) in accordance<br />
with DIN 43871 possible up to and including 63 A.<br />
BD2-GKM2/F<br />
NSV0_01014<br />
NSV0_00139<br />
5/10 Siemens LV 70 · 2006
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