JST Power Equipment logo with red JST text in a globe-shaped oval and blue background.
English Deutsch
Careers Contact Request a Quote
JST Power Equipment logo with red JST text in a globe-shaped oval and blue background.
English Deutsch
Products See Overview

Dry Type Transformers

Cast resin, VPI and specialty transformers

Pad Mount Transformers

Single-phase and 3-phase liquid-filled transformers

Small Power Transformers

Medium voltage power distribution up to 100 MVA

Medium Voltage Switchgear

Gas-insulated and air-insulated switchgear solutions

Outdoor Substation Breaker

Configurable substation circuit breaker technology

Medium Voltage Packaged Unit Substations

Modular prefabricated power distribution system

Battery Energy Storage Systems

Flexible, scalable energy storage solution

Services See Overview

Field Service

After-sales service and support

Industries See Overview

Power Generation

Optimizing efficiency while improving the safety and sustainability of energy production.

Power Transmission

Innovating solutions that power a safe, reliable grid.

Power Distribution

Ensuring more efficient, reliable, and safer power distribution systems.

Solar Distribution

Supporting the development of solar platforms to shape a more sustainable future.

Wind Energy

Innovating wind technology to promote a cleaner, greener planet.

Commercial Buildings & Infrastructure

Meeting the ever-changing needs of global commercial infrastructure.

Data Centers

Designing solutions that power digital infrastructure.

Industrial Facilities

Engineering advanced power solutions that meet the needs of modern factories.

Rail & Transportation Systems

Supporting the electrification of modern transport systems and infrastructure.

About Us See Overview

Our Locations

With 9 manufacturing plants and offices in 3 continents, we are here when and where you need us.

Leadership

Our exceptional team of executives, each a standout in their respective credentials, bringing together diverse expertise, visionary leadership, and innovative thinking.

Sustainability

Minimizing our impact and helping customers do the same.

News & Resources See Overview

News

Stay connected with us and see why we are leaders in the industry.

Product Literature

Check out our literature library.

Events

Join us at these upcoming industry events.

Products See Overview

Dry Type Transformers

Cast resin, VPI and specialty transformers

Pad Mount Transformers

Single-phase and 3-phase liquid-filled transformers

Small Power Transformers

Medium voltage power distribution up to 100 MVA

Medium Voltage Switchgear

Gas-insulated and air-insulated switchgear solutions

Outdoor Substation Breaker

Configurable substation circuit breaker technology

Medium Voltage Packaged Unit Substations

Modular prefabricated power distribution system

Battery Energy Storage Systems

Flexible, scalable energy storage solution

Services See Overview

Field Service

After-sales service and support

Industries See Overview

Power Generation

Optimizing efficiency while improving the safety and sustainability of energy production.

Power Transmission

Innovating solutions that power a safe, reliable grid.

Power Distribution

Ensuring more efficient, reliable, and safer power distribution systems.

Solar Distribution

Supporting the development of solar platforms to shape a more sustainable future.

Wind Energy

Innovating wind technology to promote a cleaner, greener planet.

Commercial Buildings & Infrastructure

Meeting the ever-changing needs of global commercial infrastructure.

Data Centers

Designing solutions that power digital infrastructure.

Industrial Facilities

Engineering advanced power solutions that meet the needs of modern factories.

Rail & Transportation Systems

Supporting the electrification of modern transport systems and infrastructure.

About Us See Overview

Our Locations

With 9 manufacturing plants and offices in 3 continents, we are here when and where you need us.

Leadership

Our exceptional team of executives, each a standout in their respective credentials, bringing together diverse expertise, visionary leadership, and innovative thinking.

Sustainability

Minimizing our impact and helping customers do the same.

News & Resources See Overview

News

Stay connected with us and see why we are leaders in the industry.

Product Literature

Check out our literature library.

Events

Join us at these upcoming industry events.

Products and Services

Pad Mount Transformers

Engineered to ensure safe, reliable power distribution

Contact Us Request A Quote

Space-saving solutions for safe, efficient power distribution  

JST Power Equipment’s liquid-filled pad mounted transformers are dielectric fluid-filled, distribution transformers that range up to 34.5 kV. They are specifically designed for handling underground power distribution loads for a wide range of industry applications from data centers, hospitals and other commercial buildings to private utilities and industrial plants, among others. Our solutions are UL listed and designed and tested in accordance with industry standards including ANSI, IEEE, CSA, and DOE, as applicable. 

Learn more about our technologies: 

Single-phase padmount Three-phase padmount

Industry-Leading Lead Times

1 - 2 Weeks RFQ Lead Times

6 - 8 Weeks Drawing Approvals

22 - 24 Weeks Single-Phase Pad Mounted Transformers

22 - 24 Weeks Three-Phase Pad Mounted Transformers

 

Single-phase liquid-filled pad mounted transformers

Our single-phase liquid-filled pad mounted transformer is specially designed to improve power performance while reducing weight and enhancing quality, safety and sustainability. Engineered to ensure reliable power distribution, the compartment-type design is suitable for mounting on outdoor pads and complies with all industry standards. From residential to commercial buildings, airports, factories, hospitals and others, our solution meets the need for your application. 

Current Size Range and Rating Capability

Power Range 15 kV – 167 kVA
Voltage Level Up to 34.5 kV
JST liquid-filled pad mount transformer with open cover showing labeled terminals and internal components

SOLUTION ADVANTAGES

SERVES A WIDE RANGE OF INDUSTRY APPLICATIONS

SPACE SAVING, COMPACT DESIGN

ENHANCED SAFETY COMPARED TO POLE MOUNTED

EASY TO INSTALL WITH LOW MAINTENANCE

 

Three-phase liquid-filled pad mounted transformers

Our three-phase liquid-filled pad mounted transformer is a commercial distribution transformer specifically designed for handling underground power distribution loads for utility, industrial and commercial applications.​ Our design, tested in accordance with industry standards, provides a cost-effective solution and ensures safety and environmental protection. 

Current Size Range and Rating Capability

Power Range 75 kVA – 5000 kVA
Voltage Level Up to 34.5 kV and below
Green liquid-filled pad-mounted transformer with both high-voltage and low-voltage compartments exposed.

Featured Resources & Downloads

Product Sheet – Single Phase Liquid-Filled Pad Mounted Transformers Product Sheet – Three Phase Liquid-Filled Pad Mounted Transformers Brochure – JST Power Equipment Solutions

Contact Us Today

Have a question for our team? Get in contact with us today.

Connect

Logo of JST Power Equipment featuring a blue oval with red letters

Address

Office Headquarters

30 Skyline Drive
Lake Mary, FL 32746

Contact Us

Our Company

About Us 

Our Locations

Careers 

 

Connect

© 2025 JST Power Equipment All Rights Reserved.
Privacy Policy