UniGear Portfolio

Air-insulated switchgear main product line for high demanding applications in primary power distribution.

25+ years in the market

UniGear is the main product line of ABB’s air-insulated (AIS) indoor switchgear for primary distribution. With more than 25 years in the market, UniGear distributes medium voltage electric power safely and reliably in a variety of high demanding applications such as utility substations, mining, power plants or chemical plants. The UniGear family is fully compliant with most of the international standards.

UniGear Portfolio

<p>Air-insulated switchgear main product line for high demanding applications in primary power distribution.</p>

UniGear ZS1

UniGear ZS1, up to 24 kV, is a medium voltage air-insulated switchgear with withdrawable circuit-breaker for primary distribution suitable for indoor installations.
UniGear ZS1 is built as a single busbar, double busbar or duplex and even double level solution. It is also certified for use in special and harsh applications such as marine and seismic. UniGear ZS1 comes in 500mm, 650mm, 800mm and 1000 mm widths – fully compatible with other UniGear panels. It is fully compliant with the IEC, CSA, GOST, GB/DL standards.

Benefits:

Manufactured and supported on six continents
Safety interlock to avoid maloperation and fully arc-proof
Highly customized versions available
Switchgear can be back to wall installed

Typical Applications:

Data centers
Utilities
Off-shore platforms
Power Generation Stations
Railways
Hospitals

Technical Features:

Rated voltage: up to 24 kV
Rated main busbar current: 4000 A
Rated short time current: 63 kA

UniGear ZS2

UniGear ZS2, up to 36 kV, is a medium voltage air-insulated switchgear for primary distribution suita-ble for indoor installations. UniGear ZS2 is built as a single busbar or back-to-back in double busbar arrangement. In the double busbar configuration, all significant components are identical to those used for the single busbar units, so the same service and maintenance procedures are guaranteed. It is fully compliant with the IEC standards.
UniGear ZS2 up to 36 kV is available with a wide range of monitoring solutions.

Benefits:

Fully interchangeable vacuum and SF6 gas circuit breaker
Operational safety, circuit-breaker racking in/out with door closed
Indoor installation

Typical Applications:

Wind Farms, Power Stations
Transformer Stations
Ports, Airports, Railways
Shopping Centres

Technical Features:

Rated voltage: up to 36 kV
Rated main busbar current:...3150A
Rated short time current:...31.5 kA/3s

UniGear ZS3.2

UniGear ZS3.2, up to 36 kV (46kV upon request), is a medium voltage air-insulated switchgear for primary distribution suitable for indoor installations. UniGear ZS3.2 is a metal-enclosed switchgear built as a single busbar suitable for the 50/60 Hz three phases power systems. It is fully compliant with the IEC and GB/DL standards and GOST standards. UniGear ZS3.2 is produced in widths 1200 and 1400 mm can be fitted with vacuum circuit breakers.

Benefits:

Easy to operate and maintain
Reliable and robust
Compact design for optimized use of space
Various panels meet wide range of customer requirements

Typical Applications:

Various application in most systems where electrical energy is generated, distributed or utilized.

Technical Features:

Rated voltage: 40.5 kV
Rated short time current:...31.5kA/4s
Rated power frequency withstand voltage: 95 kV/1min
Rated lightning impulse withstand voltage: 185 kV

UniGear MCC

UniGear Motor Control Center, up to 12 kV, is an air-insulated medium-voltage motor control center (MCC) designed specifically for motor, transformer and capacitor bank switching. UniGear MCC has been designed in width 400 mm, compatible with other panel types from UniGear family. MCC contac-tor is suitable for 1,000,000 of mechanical operations.

Related products

<p>Air-insulated switchgear related product line in primary power distribution.</p>

LeanGear ZS9

LeanGear ZS9, up to 12 kV, is a medium voltage air-insulated (AIS) switchgear for primary distribution suitable for indoor installations. LeanGear ZS9 is built as a single busbar solution for mid to low applications in infrastructure, light industry, buildings, data center, food and beverage and utilities. It is fully compliant with the IEC and GB/DL standards.

Benefits:

Safe & Reliable
Ease of installation & maintenance and operations
Ergonomic solution
Ease of operation and Low-down time

Typical Applications:

Mid to low demanding infrastructure
Light industry
Buildings
Data center
Food and beverage
Utilities

Technical Features:

Rated voltage: 12 kV
Rated main busbar current: 2000 A
Rated short time current: 26.3 kA
Rated power frequency withstand voltage: 28/38 kV
Rated lightning impulse withstand voltage: 75/95 kV

ZS8.4

ZS8.4, up to 24 kV, for indoor installations and built as a single busbar or back-to-back in double bus bar arrangement. It complies with IEC standards.

This modern air-insulated switchgear offers universal applicability – from compact ring main applications to complex power distribution systems. Tailored to meet the demands of municipal and private utilities, industrial facilities, and building infrastructure, the ZS8.4 delivers an ideal solution through its comprehensive safety concept.

Benefits:

Wide spectrum of interlocks to ensure safety and fail-safe operation
Perfect fit for switchgear applications where a compact footprint is important
Different pressure relief concepts (also in combination with ABB’s ultra fast earthing switch - UFES)
Panels with loss of service continuity class LSC2A and class PM available
Suitable for applications in concrete substations

Typical Applications:

Distribution network applications
Hospitals
Logistics Centers
Transport & Railway
Thermal power stations
Water treatment facilities
Container applications

Technical Features:

Rated voltage: 24 kV
Rated main busbar current: 1250 A
Rated short time current: 25 kA/3s
Rated power frequency withstand voltage: 50 kV/1min
Rated lightning impulse withstand voltage: 125 kV

Product scope

See below a quick comparison of our UniGear products:

	UniGear ZS1	UniGear ZS2	UniGear ZS3.2	UniGear MCC	LeanGear ZS9	ZS8.4
Max. Rated voltage	24 kV	36 kV	40.5 (46) kV	12 kV	12 kV	24 kV
Max. rated continuous current (busbar/feeder)	4000 A	3150 A	3150 A	4000 A 400 A	2000 A	1250 A
Max. rated short-time withstand current	63 kA	31.5 kA	31.5 kA	50 kA	26.3 kA	25 kA / 3s
Busbar arrangement(s)	Single Busbar, Double Busbar, Duplex	Single Busbar, Duplex	Single Busbar	Single Busbar	Single Busbar	Single Busbar
Standards	IEC, GB, DL, GOST, Marine,(DNV, Lloyd, RINA, BV, ABS)	IEC	IEC, GB, DL, GOST	IEC, GOST, GB, DL	IEC and GB/DL standards	IEC
Industries	High demanding, incl. harsh applications such as marine, and seismic. Utilities, heavy industry, data centers, renewables, oil&gas, rail and transport, etc.	High demanding applications. Utilities, heavy industry, data centers, renewables, infrastructure	High demanding applications. Utilities, renewables	Chemical, Oil & Gas, heavy industry (mining, metals and minerals) and light industry (food and beverage)	Mid to low demanding infrastructure, Light industry, Buildings, Data center, Food and beverage, Utilities	Distribution network applications, Hospitals, Logistics Centers, Transport & Railway, Thermal power stations, Water treatment facilities, Container applications

* For ABB’s UniGear rail portfolio please click here.
** UG 550 has gone to classic by March 2025. Please contact us for more information.
***UG 500R has gone to classic by July 2025. Please contact us for more information.

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Try our Medium Voltage Tools

There is a Medium Voltage tool for every switchgear and its applications. Click the button below to try them.

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Circuit breakers

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Frequently Asked Questions

UniGear offers a wide range of products such as UniGear ZS1, UniGear ZS2, and UniGear ZS3.2 - each designed and optimized for different needs. The right UniGear product will depend on customers’ specific application’s requirements, such as voltage level, current rating and environmental conditions. For more information please see table above or use ABB’s product selector tool. You can also contact our sales team who can help tailor the solution to your exact specifications.

UniGear switchgear is renowned for its reliability, safety, and flexibility. Key advantages include the use of ABB components and advanced digital technologies, a compact design, ease of installation, and strong integration capabilities. It also offers enhanced protection and control features, making it suitable for a wide range of high demanding applications. Additionally, it is highly customizable to meet various customer needs. UniGear is supported by comprehensive product lifecycle services.

Typical applications include utility substations, industrial plants, commercial buildings, data center and renewable energy installations. UniGear switchgear is versatile and can be used in various demanding environments such as offshore platforms, marine vessels, mining, and chemical plants.

Yes, UniGear switchgear can be integrated with existing systems via various communication protocols. It also supports IEC 61850 communication protocol, allowing seamless integration with other equipment and systems and ensuring compatibility and ease operation within your existing infrastructure.

UniGear offers comprehensive support and training for new customers, including installation guidance, operational training, and ongoing technical support. ABB provides classroom trainings and resources such as manuals, online tutorials, and on-site training to ensure customers can effectively use and maintain their switchgear. You can find more information here.