JST Power Equipment Inc  

Lake Mary,  FL 
United States
  • Booth: 2317

JST Welcomes you to DistribuTech!

JST Power Equipment is a leading manufacturer of transformers and switcghear.  As a leading in innovation and technology, JST strives to bring the newest technologies, manufacturing processes and innovations to our customers.   JST has brought many new products and technologies to the market in the past 24 months including our revolutionary new indoor and outdoor MV breakers that allow for 3 phase or single phase tripping.  We have launched our dry transformer in a pad mounted configuration, a submersible dry type transformer and have a complete line up of Cast Resin and VPI solutions to meet your application needs.  We also have introduced our new oil padmounted transformer line to the market.  Come see us this week and see what other new products we will be releasing in 2023!

Brands: JST Power Equipment


  • J100Clad MV Metal Clad Switchgear
    MV Switchgear from JST Power Equipment. 15KV, 3000 amp, 50KAIC Gear...

  • JST Power Equipment type J100CLAD is an IEEE-rated, non-arc-resistant, metalclad switchgear product line with Type J3Mag™ vacuum circuit breakers. It provides centralized control and protection of medium-voltage power equipment and circuits in industrial, commercial, and utility installations. Applications include generators, motors, feeder circuits, transmission, and distribution lines.

    J100CLAD offers a total design concept of cell, breaker, and auxiliary equipment that can be assembled in various combinations to meet user application requirements. Two-high breaker arrangements are standard up to 15kV. One-high arrangements may be furnished when required.


    • Fully compliant to IEEE C37.20.2-2015 and C37.55-2020 for metal-clad switchgear construction
    • 36” wide, 95” deep (w/doors), 96” tall frame
    • UL Certified
    • Modular design and construction
    • Galvanized steel construction
    • Two-high construction
    • Top and bottom cable or bus duct entry
    • ISO 9001 certified manufacturing facilities
    • PT/Fuse compartment closed door racking
    • Built-in racking mechanism
      • Built into cubicle vs. on truck
      • Allows for easy addition of electric racking solution
      • Easier replacement or movement of breakers
    • On board Electric racking option available
    • 15kVA draw-out CPT
    • TOC switch auxillary contacts
      • 8/16 pole contacts
      • Positive pole indication
      • Better control
    • Tilt-out CPT/PT truck 


    • Single phase or three phase operation
    • Magnetically actuated breaker
    • Independent pole actuators
    • Very few moving parts eliminates lubrication requirements
    • Direct drive of push rods eliminates torque in breaker
    • Fully compliant to C37.04-2018 and C37.09-2018
    • Consistent operating time over life of unit
    • Chain driven racking mechanism
    • Standard five-year warranty on the breaker
    • Improve SAIFI/SAIDI scores
    • Longer life, lower operation costs
    • Safer design, easier access for service

  • OD3MAG Outdoor Breaker
    The OD3MAG breaker is a magnetically actuated breaker that provides either three phase and single phase tripping to help improve your SAIDI and SAIFI scores....

  • The OD3MAG is the first MV Substation Breaker that allows you to choose to do either three phase tripping or you can choose to trip each phase individually.  This feature allows you the functionality and ratings of a circuit breaker and the functionality of a recloser.  By tripping individual phases in distribution systems, utilities are able to improve their SAIDI and SAIFI scores by as much as 30% or more on selected lines.  You can also improve the recovery time after a fault by clearly identifying which phase has the issue and directing the crews to the correct area quickly thus improving your recovery time while also improving system reliability.


    • Up to 15KV, 1200 Amps, 31.5KAIC
    • Magnetically-actuated Breaker
    • Single-Phase Capability with Independent Pole Actuators
    • Overhead Lift standard
    • Lift out breaker for easier upgrades and repairs
    • LV Control Panel Swing Doors
    • Adjustable Leg Heights
    • Maximum water ingress protection:
      • Minimum number of penetrations
      • Gasket protection features
      • Roof protection system
    • Lift off doors


    • Single phase or three Phase operation and tripping
    • Forklift lifting provisions
    • Lift out breaker feature for easy repair/replace
    • Left or right control door swing
    • Manual Trip Lever
    • CT and Ragowski Coil Options

  • Cast Resin Transformers
    Cast Resin Transformers provide superior performance in a low maintenance package. JST provides up to 45MVA, 40.5kV Solutions for your transformer needs....

  • JST Power Equipment is one of the largest manufacturers of Cast Resin Transformers in the world, able to design, test and build transformers to meet some of the most challenging applications in the market today. Our teams of engineers have been leading the industry for over 25 years in terms of technology advancements, quality and customer support.

    When in harsh environments – such as outdoor installations, corrosive environments, off-shore applications, petrochemical facilities and the like – it is best to choose a Cast Resin Transformer for your needs. This type of construction is designed specifically to protect the coils from the devastating effects that salt, water, particulates, caustic substances and sun can have on a transformer. For longest life and improved system reliability, Cast Resin Transformers are designed to survive. Cast Resin Transformers are also designed to stand up better than oil filled transformers for harsh duty applications where rapid cycling or short, high current overloads are expected, such as in many industrial processes. This robustness leads to improved system reliability and lower maintenance costs though out the life cycle of the transformer.

    We build Cast Resin Transformers for a wide array of applications, sizes and configurations. Currently we are able to build units up to 45MVA, 40.5kVA and 200 kV BIL.   JST provides a wide array of options when it comes to enclosures to help you meet your system needs. JST enclosures are designed to meet all requirements of CSA and UL 50.


    • Primary and Secondary Cast Resin Transformer Construction 
    • Aluminum or Copper Windings 
    • Standard ANSI 61 Gray Powder Paint Enclosures 
    • Easy Access Terminal Taps 
    • Multiple and Customer Bus Configurations Available 
    • Highest Quality Grain Oriented Steel 
    • 80° and 115°C Temperature Rise Options 
    • 180C Class H UL Listed Insulation System 
    • UL and cUL Listings 
    • 50 or 60 H


    • Special Paint and Customer Paint Colors Available
    • Forced Air Cooling
    • Water Cooling
    • Pad Mounted Design
    • Jacking Pads
    • Anti-Vibration Mounting Systems
    • Electrostatic Shielding
    • Temperature Monitoring Systems
    • Metering
    • IR Viewing Ports
    • Custom Control Panels
    • Surge Arresters
    • Neutral Grounding Resistors
    • Ground Fault Relay Protection
    • Drive Isolation Ratings
    • Low Inrush Current Design
    • Special Enclosure Ratings (marine, fungus resistance, UV)
    • RC Snubber with monitoring circuit


    • NEMA 1, 12, 3R, 4, and 4X
    • Marine Applications 
    • Traffo Designs (close couple to switchgear or switches)
    • 3 phase Padmounted designs available up to 5 MVA
    • 1 Phase Padmounted designs available up to 167 KV

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