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Cassettes
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These cassettes or
subdrawers are for use in subrack types, constructed in
accordance with DIN 41 494 and IEC 297-3.
Four identical profiled struts join the front plate and
the rear wall, forming a box, which can also accommodate
side walls and top and bottom cover plate. 3 U cassettes
are alternatively available with profiles and side wall
in one piece construction.
The dimensions of the cassettes, in respect of the guide
rails, are the same as the outer dimensions of printed circuit
boards in accordance with DIN. They can be slid into subracks
on card guides. The cassettes themselves can accommodate
standard size PCBs DIN 41 494, IEC 297-3.
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- Type "FP" (front panel):
The enclosed front panel and enclosed rear wall are characteristic
of this subdrawer type. This means that the subdrawer is
particularly suitable for installation of any component
such as transformers, capacitors, relays, etc.
- Type "RT" (rear wall with partial aperture):
The special feature of this subdrawer is the closed front
panel and the rear wall, which has a hole for installation
of a transfer plug connector. The internal wiring is located
within the subdrawer and is therefore protected against
external mechanical, electrical, and magnetic effects.
- Type "RV" (rear all with full aperture):
The special feature of this subdrawer type is that it has
an open front, which means that printed circuit boards with
handles can be inserted. For this reason, the corresponding
rear wall has an aperture over its whole width, and is equipped
with a set of holes for mounting of plug connectors.
- Type "FL" (front strip):
This subdrawer type is similar to shape RV. It differs from
the RV shape only in that the full width front panel is
attached to the side panels by two front strips.
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