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Ex-way

Totally enclosed, two-piece aluminum sandwich busway for 600 V power
distribution in data centers, industrial plants, and commercial high-rises.
Available 630 A – 6000 A with copper or aluminum conductors.

Part series: EX-W-xxxx . Issued: Rev. 7, 2026 . Country of origin: USA (Tarboro, NC)
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600 V
Rated Voltage AC
630 – 6000 A
Current Range
150 kA
Short-Circuit Withstand
50 / 60 Hz
Frequency
Cu / Al
Conductor Material
IP54
Ingress Protection

Flexible Configurations for any Situation

LS Busway's Ex-way is a totally enclosed, non-ventilated, true-sandwich design rated at 600V and engineered for demanding power distribution needs. This advanced busway system supports current ratings from 630A to 6000A and is available with either copper or aluminum conductors. 

Designed for both performance and durability, Ex-way busway features an all-aluminum, two-piece housing that provides excellent mechanical strength and superior heat dissipation. This makes it a reliable busway solution for a wide range of commercial and industrial applications. 

The Ex-way busway system is capable of handling up to AC 1000V.  When paired with our high-performance joint kit, the large, connected surface reduces contact resistance and meets NEMA 3 weather-resistant standards. Depending on your project requirements, LS Busway's Ex-way is available with interior or exterior NEMA 3R-rated housing, or NEMA 1 for indoor installations.

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Suitable for
  • Apartments & large buildings
  • Electrical rooms
  • Plants
Benefits
  • Lightweight, easy to install and compact
  • High thermo-diffusional efficiency
  • Compatible with temperature- and power- monitoring systems and plug-in boxes
  • Earthquake- and explosion-resistance features
Specifications
Full Technical Specifications
Reference values per UL 857. For job-specific values, see test reports linked in the Downloads section.
Electrical
Rated Voltage AC ≤ 600 V (1000 V option)
Rated Current Continuous 630 / 800 / 1000 / 1200 / 1600 ? 2000 / 2500 / 3000 / 4000 / 5000 / 6000 A
Rated Frequency - 50 / 60 Hz
Short-Circuit Withstand Icw, 1 s up to 150 kA RMS sym.
Peak Withstand Ipk up to 330 kA
Insulation Class - B (130 °C) std · F (155 °C) opt.
Dielectric Strength 1 min 2.5 kV (LV) / 3.5 kV (1000 V opt.)
Mechanical
Housing Material Extruded aluminum alloy 6063-T5
Conductor Material Cu 99.95 % ETP · Al 1350-H19
Cross-section (W × H) 3-ph 4-w Varies — see Configurations table below
Standard Length - 3 m / 10 ft (1 m – 3 m available)
Weight kg / m 8 – 42 kg/m (current dependent)
Bending Radius min 300 mm (12 in)
Environmental
Operating Temperature Ambient -5 °C to +40 °C (derate above 40 °C)
Storage Temperature - -25 °C to +70 °C
Relative Humidity non-cond. ≤ 95 %
Ingress Protection - IP54 (NEMA 1) · IP65 (NEMA 3R) opt.
Altitude - ≤ 2000 m (derate above)
Seismic IEEE 693 Qualified — High level
Compliance & Standards
UL - UL 857 Listed (file E######)
NEC - Article 368 compliant
IEC - IEC 61439-6 type-tested
NEMA - NEMA BU 1.1
RoHS / REACH - Compliant
Configurations
Available Variants & Part Numbers
Use this matrix to identify the exact SKU for your specification. Filter by current rating, conductor, and housing.
Name Current Conductor W × H (mm) Weight (kg/m) Housing Datasheet URL
EX-W-0630-CU-N1 630 Cu 180 × 110 9.2 NEMA 1 PDF
EX-W-1000-CU-N1 1000 Cu 190 × 120 13.0 NEMA 1 PDF
EX-W-1600-CU-N1 1600 Cu 210 × 145 18.5 NEMA 1 PDF
EX-W-2500-AL-N1 2500 Al 240 × 175 22.0 NEMA 1 PDF
EX-W-4000-CU-N3R 4000 Cu 290 × 220 34.0 NEMA 3R PDF
EX-W-6000-CU-N3R 6000 Cu 340 × 260 42.0 NEMA 3R PDF
EX-W-0630-CU-N1 630 Cu 180 × 110 9.2 NEMA 1 PDF
EX-W-0630-CU-N1 630 Cu 180 × 110 9.2 NEMA 1 PDF
EX-W-0630-CU-N1 630 Cu 180 × 110 9.2 NEMA 1 PDF
EX-W-0630-CU-N1 630 Cu 180 × 110 9.2 NEMA 1 PDF
EX-W-0630-CU-N1 630 Cu 180 × 110 9.2 NEMA 1 PDF
EX-W-0630-CU-N1 630 Cu 180 × 110 9.2 NEMA 1 PDF
EX-W-0630-CU-N1 630 Cu 180 × 110 9.2 NEMA 1 PDF

Certifications & Compliance

All Busway products are designed, manufactured, and tested to international and domestic standards. 
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Product Resources

  • Full Technical Specifications
  • Available Variants
  • Certifications & Compliance
  • Engineering Documents
Full Technical Specifications
Product documentation is available upon request. Contact LS Busway for the latest product literature, technical data, and project-specific documentation. 
Request Documentation
Available Variants
Product documentation is available upon request. Contact LS Busway for the latest product literature, technical data, and project-specific documentation. 
Request Full Variant List
Certifications & Compliance
Certification and compliance documentation may vary by product, configuration, and project requirements. Please contact LS Busway to request the applicable documentation for your project.
Request Certifications
Engineering Documents
Product documentation is available upon request. Contact LS Busway for the latest product literature, technical data, and project-specific documentation.
Request Documentation
https://21727518.fs1.hubspotusercontent-na1.net/hubfs/21727518/Data%20Center%20in%20LA%20-%20under%20NDA%20(1).png https://21727518.fs1.hubspotusercontent-na1.net/hubfs/21727518/Okan%20Tower%20-%20Miami%20(1).png https://21727518.fs1.hubspotusercontent-na1.net/hubfs/21727518/Martel%20Ave%20Apartments%20(1).png

https://21727518.fs1.hubspotusercontent-na1.net/hubfs/21727518/LSBus_MAY_2026/Data_center_icon.png Data Centers

https://21727518.fs1.hubspotusercontent-na1.net/hubfs/21727518/LSBus_MAY_2026/industrial.png Commercial & Industrial

https://21727518.fs1.hubspotusercontent-na1.net/hubfs/21727518/LSBus_MAY_2026/Residential.png Residential

High Power Density: Busway is designed to handle large power loads efficiently, making them suitable for high-density computing environments where numerous servers require significant power.

Improved Airflow: Since they eliminate the need for numerous power cables, busway create open spaces which enhance airflow around server racks, optimizing cooling efficiency.

Space Saving: Their compact design allows for more efficient use of data center floor space.

Scalability and adaptability: Busway sections can be easily added or rearranged to accommodate new equipment or production line adjustments without major rewiring, making it perfect for evolving industrial environments. 

Quick installation: Busway is prefabricated and uses simple connection methods, significantly reducing installation time and labor costs compared to traditional wiring. 

Direct power access: Plug-in units can be installed along the busway to provide direct power to individual machines or workstations, eliminating the need for long cable runs. 

Modular design: Compared to cable trays filled with individual wires, busway takes up less space due to its compact, modular design. 

Flexibility in layout: Busway can be easily configured to fit the specific layout of a high-rise building, with the ability to add or modify power taps as needed. 

Easy maintenance: Busway systems typically have accessible components, allowing for straightforward maintenance and repairs. 

Safety features: Most busway systems are designed with safety features like enclosed conductors, minimizing the risk of electrical hazards. 

Downloads

Engineering Documents

PDF
Ex-Way Datasheet

Rev. 7 · Jan 2026 · 2.1 MB

Download
PDF
Ex-Way Installation Manual

Rev. 7 · 7.8 MB

Download
PDF
UL 857 Test Certificate

Cert E###### · 480 KB

Download
PDF
IEEE 693 Seismic Test Report

2.8 MB

Download

Technical FAQ

View All
What is Ex-Way used for?
Ex-Way is used for low-voltage power distribution in commercial buildings, industrial facilities, data centers, and other large electrical environments. It is designed to help distribute power through a compact, enclosed busway system. 
When should I choose Ex-Way instead of traditional cable or conduit?
Ex-Way may be a good fit when a project needs compact routing, simplified installation, modular expansion, or more accessible power distribution compared to long cable and conduit runs.
Where is Ex-Way commonly applied?
Ex-Way is commonly used in manufacturing facilities, commercial buildings, high-rise projects, and other applications where reliable low-voltage power distribution is needed.
Can Ex-Way be used indoors or outdoors?
Available enclosure options depend on the project requirements and product configuration. Indoor and outdoor use should be reviewed with the LS Busway team to confirm the correct enclosure rating and application fit. 
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Need Help Specifying?

Our application engineers can help you select the right busway system, provide layout
assistance, and generate a project-specific quotation.

Request a Technical Quote Talk to an Engineer