Global Solution Guide
Busway
www.usa.siemens.com/busway
Siemens Busway Systems Providing Power Distribution
Solutions around the Globe
Power delivery solutions
for a broad range of applications
Selecting the right Busway solution
for your unique requirements
When you need a cost-effective power delivery solution
for an industrial plant, a hospital, shopping mall or high
tech environment, you face the challenge of balancing
performance with value to efficiently distribute power
throughout your facility. Only Siemens offers you the
industry’s most complete and modern line of busway
products–an extensive range of options that lets you match
your site-specific requirements with an optimized power
delivery solution–around the corner or around the globe.
These innovative solutions encompass the world’s most
comprehensive and technologically advanced busway
products for the automotive, industrial, commercial/
institutional and high-rise multi-occupancy markets. For
added convenience, our busway products and accessories
are readily available, easy to order and to install. Our
product lines are specifically designed to comply with
local and international standards and to satisfy the final
measure of your profitability a low total installed cost.
Siemens Power II Measure Service can
save time and money by ensuring,
accurate, optimized Busway routing
Sentron™ Busway
Siemens flagship Busway line, Sentron Busway is a
flexible power distribution solution with an easy-to-install
single bolt design, optional 200% neutral or isolated
ground and ratings from 225 to 5000 amps UL and IEC.
XJ-L™
Busway
™ HD B
sway
An excellent choice for high-tech, commercial retail or
light industrial applications, XJ-L Busway is engineered
for high reliability with optional isolated grounding,
200% neutral, and ratings of up to 400A.
Saving you time and money with the
Power II Measure service
Siemens PIIM service provides professional busway routing and
measurement by a factory representative. The Siemens representative
will meet with the designated site contact to review project details and
discuss routing options. Using a laser measuring device, all pertinent site
measurements will be recorded and then transferred to a CAD approval
drawing(s). The PIIM service guarantees correct alignment and routing
of the busway. If there are any errors in the busway routing that resulted
from Siemens, replacement busway items will be provided at no charge.
Power II Measure Service
www.usa.siemens.com/busway
For more information, please order BUFL-PO2ME-0910 via the Siemens
Literature Fulfilment webpage - www.usa.siemens.com/literature
Sentron Busway for global power
distribution applications
Building on a solid foundation of advanced products for the
construction industry, the Siemens Sentron name is recognized
worldwide as synonymous with quality and consistent
performance. Sentron Busway delivers impressive features and
benefits that make it ideal for many types of industrial and
construction implementations. Engineered to ensure the safe and
efficient distribution of power in industrial, commercial and
institutional environments worldwide, Sentron ampacities range
from 225A to 5000A UL and IEC. Thanks to an innovative design,
you benefit fro laborsaving installation and a flexible, compact bus
system that is an ideal fit for most applications. In fact, Sentron
Busway is one of the industry’s least labor intensive systems.
Sentron Busway installs with minimal hardware and often costs up
to 35% less than cable and conduit installations. The lightweight
aluminum housing acts as an integral ground, joint stacks connect
with splice plates featuring a single-bolt design, and bus plugs and
cable tap boxes offer the industry’s largest wire bending space. An
optional 200% neutral within the bus bar housing accommodates
harmonics common in today’s power systems. Sentron Busway
conductors are insulated with a state-of-the-art epoxy insulation
system, which is applied using an electrostatic spray process for
optimal insulation integrity.
Easy to install single bolt design
IP rated for touch safe
Design accommodates optional 200% neutral
with isolated ground or Internal ground
All Sentron Busway products
meet the following standards:
Hsg Grd
50% Grd
- UL 857
- NEMA BU1
- CSA C22.2
- IEC 529 (1989), IEC 439-1 (1993),
439-2 (1993)
- UL 1479
- DIN 4102 Parts 9&12
- BS 6387 Parts 11.1 and 11.2
200% N
Hsg Grd
Ratings
Conductors
Feeder
Plug-in / Riser
 225-4000 (Al)
 225-5000 (Cu)
 3 phase, 3 wire
 3 phase, 4 wire ( 100% neutral)
 3 phase, 4 wire (200% neutral)
 50%+ Integral Al housing ground
 50% Internal ground bus (Al or Cu)
 50% Isolated ground bus
 IP40 – Indoor
 IP55 – Splash Proof
 IP66 – Outdoor
 NEMA 3R – Outdoor
 IP40 Indoor
 IP55 Splash Proof
 10 openings per 10’ section (plug-in)
 IP2X touch safe plug-in openings
Sentron plugs are engineered with the installer and end user in mind.
Features like factory installed breakers, reversible operating handle,
visible position indication, spring loaded padlockable latch, and patented
door interlock provide safe and easy installation and operation.
 Circuit breaker bus plugs are available in frame sizes from 125A to 800A
with interrupting ratings of standard, high, or current limiting
 Fusible bus plugs are available in 240V and 600V; 30, 60, 100, 200, 400
and 600 amp frames. All Sentron fusible bus plugs feature a visible blade
technology and a 200kA short circuit rating
Epoxy insulated
Ratings from 225 to 5000 amps
• Circuit Breaker Bus Plug: 15A – 800A
• Solid State Circuit Breaker Bus Plugs:
Custom configured upon request.
• Fusible Plugs: 30A – 600A (Visible Blade Switch)
• Ground Detector and Potenzializer Plug
• SPD Surge Protection Plug
- High Exposure Applications (400kA – 500kA) - TPS6
- Medium Exposure Applications (100kA – 300kA) - TPS1
- Low Exposure Applications (100kA) - TPS9
XJ-L™ HD Busway
XJ-L Busway is well known for its outstanding performance,
providing convenient, cost-effective power distribution for
high-tech environments, data centers, laboratories, and other
applications requiring consistent, quality power distribution.
To meet changing demands of the industry, XJ-L has been reengineered to provide even more options and modularity.
The newly engineered offering is named XJ-L High Density
Busway. Key XJ-L HD design features include optional isolated
ground or 200% neutral across entire product range. For
maximum availability, XJ-L HD Busway is maintained as a stock
product to meet your quickship requirements. As a result, XJ-L
HD Busway is an intelligent choice for contractors and users
concerned with designing superior electrical distribution
systems. The compact design is ideal for limited working areas
in computer manufacturing, laboratory or test facilities,
schools, hospitals, and machine shops. With XJ-L HD Busway,
you get an exclusive, optional isolated ground design that
ensures clean power. Unlike bonded ground designs that may
convey surges from one electrical devce to another, the XJ-L HD
optional isolated ground system is well suited for high-tech
computer intensive environments. The isolated ground bar is
the same size as the phase bars, with the same ampere rating.
Installation is easy, joining one XJ-L HD Busway section to
another is as simple as matching ends and snapping them
together. Bus bars are held securely in place by spring pressure
clips located in the joint insulator. The joint is secured when
the external housing plate is attached with captive screws.
Thanks to built-in flexibility and a low initial cost, you also
benefit from future savings when you need new equipment.
Time to add on busway for new or expanded facilities? The
XJ-L Busway you installed years ago matches the XJ-L HD
Busway you specify today and years from now the new
busway sections, components or system-compatible bus
plugs will still fit.
Joint Connection – spring clamp
assemblies ensure reliable,
maintenance-free joints
Cost effective power
distribution Solution
Optional Isolated Ground or 200% Neutral
All XJ-L HD Busway products
meet the following standards:
- UL 857
- NEMA BU1
- CSA C22.2
200% N
.125” Solid Cu Bar
Internal Grid
Ratings
Conductors
Feeder
Plug-in / Riser
 100A
 225A
 400A
 3 phase, 3 wire
 3 phase, 4 wire
 Optional internal ground
 Optional isolated ground or 200% neutral
 Solid copper (98% conductivity) bus bars
 Indoor only
 Indoor only
 12 plug-in openings per 10’ section
 IP2X Touch Safe Plug-in Openings
XJ-L™ HD Power Modules (XPM) are offered with a wide selection
of NEMA and IEC surface mount receptacles or drop cord
connections. Custom configuration with integral current
monitoring or surge protection are also offered. The XPMs are
available from 15A to 200A, with circuit breaker or Vacu-Break
fusible switches. Add on features include a variety of receptacles,
shunt trips, alarm switches, auxiliary contacts and metering.

Circuit Breaker XPM: 15A – 200A

Fusible XPM: 30A – 100A (Vacu-Break Switch)

Plug-in Tap Box 100A & 200A

Ground Detector and Potentializer Plugs
Totally enclosed steel housing is robust,
guarding against incidental contact
and contamination of live parts.
Enclosed box design will not twist or
distort during Power Module installation
Lightweight and easy to handle
Up to twelve Power
Modules can be installed
per 10’ of plug-in busway.
Plug-in busway can be
configured with six plugin openings per side or
twelve on one side
Designing Data Centers with Busway
Today’s Data Center Challenges
The days of fixed power distribution systems, using traditional
hardwired panels are no longer able to cost effectively handle all
the moves, adds and changes required for a modern data center.
To address this issue a more flexible alternative has begun to make
inroads in the data center to meet this power distribution
challenge; the busway type power distribution system.
These new modular busway systems are specifically designed to
meet these data centers requirements. They provide the ability to
add or remove a plug-in power tap without interrupting the power
to the bus. There are a variety of different taps to supply and
support different levels of power. They are available in a wide
variety of NEMA and IEC receptacles in both single and three
phase configurations.
Reliability and Availability
If there is one constant in the data center of today and of the
future, it is change. The computing equipment evolves and is
replaced constantly. Moreover, all data centers operators and IT
departments are being asked to do more with less. If you are
evaluating your data center’s power infrastructure, either for
a new Greenfield build-out or an upgrade to an existing site,
busway power distribution systems should be given
serious consideration.
The flexibility and cost effectiveness that the busway system offers
means that the data center designer has a greater variety of
options to choose from.

With over one million feet in service, XJ-L HD Busway has a
proven track record.

Solid copper bus bars and totally steel enclosed housings are
designed for decades of dependable service.

Totally enclosed steel housing is robust, guarding against
contamination and incidental contact to live parts.

Installation is fast and easy. Joint connections simply
snap together without special tools, housing couplers,
or bus connectors and are maintenance free.
Modular and Flexible
Siemens XJ-L HD Busway components are available in a wide
variety of straight lengths, elbows, tees and crosses. Moves, Adds
and Changes are a snap. XPMs can be installed or relocated as
Siemens Industry, Inc.
Building Technologies Division
5400 Triangle Parkway
Norcross, GA 30092
1-800-241-4453
info.us@siemens.com
www.usa.siemens.com/busway
required, without de-energizing the busway. All XJ-L HD Power
Modules are fully interchangeable with all XJ-L HD Busway
configurations. Custom fittings and straight lengths can be
application engineered to tailor the busway system to specific
customer requirements.

Overhead, under the floor, horizontal, or even vertically
mounted, XJ-L HD Busway is suitable for use in all mounting
orientations making it the most versatile and energy efficient
power distribution system in its class.

For maximum Power Density with a small foot print, parallel
runs can be mounted in a “Top over Bottom” vertical arrangement,
which allows the busway system to be installed completely over
the top of the cabinets (not in the aisle).

XJ-L™ High Density Busway offers up to twelve 100A XPMs
installed per 10 foot of Busway section. Busway sections are
available with six plug-in ports per side or twelve on one side.

XPMs are installed straight onto the busway for easy insertion
and removal and allows optimal positioning of receptacle and
power cord routing.

Pre-engineered XPM opening locations on the busway ensures
no interference between XPMs for greater density and
maximum flexibility.

Power Modules are available with 3, 6, or 12 branch
circuit protection in both single and 3-phase configurations,
ranging from 15 –200 amps for maximum power density
and flexibility.
Intrinsically Robust
When considering which brand and type of system to install,
it is also important to understand some of the differences
between the different types of systems on the market today.
Track Bus is somewhat similar to Busway, however it has
certain limitations and drawbacks. Track style systems generally
are lighter duty systems originally designed for lighting
systems and may bend, sag or twist under heavy loads from
larger or numerous power taps. They also have an open style
track design that can allow unintended contact to conductors.
Siemens XJ-L HD Busway system was originally designed for heavy
industrial power distribution with rigorous physical and electrical
demands. It has been re-engineered to meet the specific
requirements of the data center, however, intrinsically it is a robust
industrial grade power distribution system.
Subject to change without prior notice
Order No.: BUFL-01000-0211
Printed in USA
© 2011 Siemens Industry, Inc.
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