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ALPHA AS Modular Distribution Boards
Introduction
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Siemens ET A1 · 10/2008
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Overview
System
The modular design of our new Siemens distribution board
system draws on our long years of experience in the distribution
board sector.
This system has been tailored to meet individual requirements
for distribution board installation.
The new ALPHA AS modular distribution board system compris-
es unequipped distribution boards with removable rear plates,
doors, bases with degree of protection IP55, assembly kits for
project-related and individual assembly - and an extensive
range of accessories.
Enclosures
Material: electrogalvanized and powder-coated sheet steel.
Sheet thickness, degree of protection IP43/IP55: body 1.25 mm,
door 1 mm
Color: RAL 7035 (light gray), further RAL colors available on
request.
Assembly kits
The assembly kits are made of sendzimir-galvanized sheet steel
and are equipped with molded-plastic covers for a wide range
of equipping options, e.g., for switching devices and modular
installation devices.
The largest switchgear that can be installed in the ALPHA AS is
Siemens switchgear up to a maximum rated current of 630 A. An
expansion to 1250 A will be available soon.
Cabinet dimensions
All dimensions are stated in mm.
Height: internal dimensions: 1800, external dimensions with
base: 1950
Width (internal/external): 250/300, 500/550, 750/800, 1000/1050,
1250/1300
Depth (external): 400
Assembly kits in panel-size grid dimensions,
height x width: 150 x 250
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Benefits
• Busbars are routed over the rear plate through butt-mounted
distribution boards
• The removable rear plate facilitates installation
• Degree of protection IP55
• Safety class 1 (protective conductor connection)
• Easy planning thanks to modular design
• Flexible expansion with a range of assembly kits from the
ALPHA 630 cabinet system
• Generous wiring spaces
• Easy assembly thanks to keyhole-fastened components and
modules with quick-acting locks
• System concept according to DIN, EN and VDE regulations
• High-quality surface finish: distribution boards made of elec-
trogalvanized and powder-coated sheet steel, system compo-
nents made of sendzimir-galvanized sheet steel, galvanized
and transparently chromated small components and screws
• Doors can be hinged on the right or left
• Door opening angle of 170°
• Replaceable locking systems (accessories)
• Front cover with sealable 90° quick-acting locks
• Environmentally-compatible and recyclable plastics
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Application
The ALPHA AS modular distribution board is ideal for use where
busbar routings are required to be fed through butt-mounted
floor-mounted distribution boards or where distribution boards
with deeper enclosures are required (e.g. in administrative, non-
residential, commercial and industrial buildings). It supplements
the Siemens floor-mounted distribution board range with the
mounting depth 400 mm.
The distribution board and its components are of modular de-
sign.
The ALPHA AS modular distribution board is designed for use
with ALPHA DIN assembly kits.
The modular distribution boards can be supplied in safety class
1 (protective conductor connection). Degree of protection IP55
can be achieved if used together with the required flanges.
With just a few standard components, it is possible to achieve a
wide range of project-related mounting and equipping options.
40-mm, 60-mm and 185-mm busbar systems with dimensions
up to 100 mm × 10 mm can be installed.
The modular design of the board enables easy planning,
configuration, calculation, ordering and mounting.
Assembly kits that only require a one-size screwdriver for as-
sembly are available for all mountable switching devices and
modular installation devices.
© Siemens AG 2008
