What Neeltran does

Neeltran, Inc. is a US-based specialty manufacturer of custom DC power electronic systems, founded in 1973 and headquartered in New Milford, Connecticut. Since 2017 it has operated as a subsidiary of American Superconductor (AMSC). The company designs and manufactures industrial rectifier-transformers and DC rectifiers in a single facility under one management team - a vertical integration that is rare in the industry and enables combined Full Current and Full Voltage factory testing of the transformer and rectifier together in their actual operating configuration before shipment.

Its product portfolio spans oil-filled, dry-type, and water-cooled transformers (up to 60 mVA); air-cooled, oil-filled, and water-cooled DC rectifiers (up to 150 kA and 1800-2500 Vdc); reactors and inductors; proprietary microprocessor-based controls with PLC and HMI options; and a dedicated hydrogen production DC power supply line rated 1 MW to 100 MW for alkaline, PEM, and solid-oxide electrolyzers. Service offerings include transformer and rectifier repair, retrofit and remanufacturing (including competitor units), turn-key system integration, and 24/7 field support.

Neeltran sells directly to enterprise industrial customers on a custom, project-based quote model with multi-year contracts. End markets include aluminum smelting, chemical processing (chlor-alkali, chlorate, chlorine dioxide), graphite production, metal refining and electro-winning, military and research, hydrogen production, plasma torch/electron beam, furnace duty, and oil and gas. The company holds ISO 9001-2015 and ISO/IEC 17025:2005 certifications, supports UL/CSA/CE/ATEX/KGS/IECEx/DNV/ABS/DGMS/GOST qualified builds, and maintains an installed base spanning more than 30 countries across every continent.

Name

Neeltran

Legal name

Neeltran, Inc.

Website

https://neeltran.com

Company type

Private

Founded year

1973

Operating status

Operating

Headcount range

51–100 employees

Short description

Neeltran designs and manufactures custom DC power systems, rectifier-transformers, and DC rectifiers in a single facility, serving global enterprise customers in aluminum, chemical processing, metal refining, military, and hydrogen production industries, and operating as a subsidiary of American Superconductor.

Ownership category

akta.pro rank

Product category

Industrial Power Electronics

NAICS

Power, Distribution, and Specialty Transformer Manufacturing (335311)

SIC

Power, Distribution & Specialty Transformers (3612), Electronic Coils, Transformers & Other Inductors (3677)

akta.pro primary industry

Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA)

akta.pro secondary industry

Grid-Scale Power Conversion & Interconnection (PCS, Grid-Tie Inverters, Converter Stations) (IMAGAAAI)

Keywords

• Industrial transformers
• DC rectifiers
• Power electronic systems
• Electrolyzer power supplies
• Rectifier-transformer systems

Headquarters

HQ city

New Milford

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Custom Power Electronic Systems Manufacturing: Neeltran generates revenue through the design, manufacture, and sale of custom DC transformers, rectifiers, and complete power electronic systems. Revenue is project-based with custom pricing for each order based on specifications, capacity, and application requirements.
2. Service, Repair and Retrofit: Service department provides repairs, rewinds, retrofits, and remanufacturing for transformers and rectifiers (including competitor units). Also offers emergency repair services and modernization of existing units.
3. Turn-Key Solutions: Complete electrical system solutions from high voltage plant transformer through power for customer process, including installation, harmonic studies, magnetic studies, simulation, relay coordination, and training.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Neeltran designs and manufactures custom DC power electronic systems, including industrial rectifier-transformers and DC rectifiers, in a single facility under one management team. Its portfolio spans oil-filled, dry-type, and water-cooled transformers and rectifiers, hydrogen production DC power supplies, reactors and inductors, and proprietary power system controls. The company also delivers turn-key electrical systems, repair/retrofit/remanufacturing services, and combined Full Current and Full Voltage factory testing of the transformer and rectifier together prior to shipment.

Product overview

Neeltran is a manufacturer of DC Power Systems and Transformers offering an integrated portfolio where the company designs and manufactures its own rectifier-transformers and rectifiers in the same facility under one management team. The core product line includes three transformer types (Oil Filled, Dry Type, and Water Cooled Transformers) and three rectifier types (Air Cooled, Oil Filled, and Water Cooled Rectifiers), plus specialized Hydrogen Production DC Power Supplies. Supporting products include Reactors and Inductors and Power System Controls (proprietary controls with PLC options). Services encompass Transformer and Rectifier repair/retrofit/remanufacturing, Turn-Key Solutions for complete electrical systems, and Combined Factory Testing that validates both transformers and rectifiers together in their actual configuration prior to shipment—a key differentiator since most competitors purchase transformers from subcontractors.

Differentiator

Problem solved

Functional benefit

Products and services

• Oil Filled Transformers Industrial rectifier transformers designed for hazardous and non-hazardous applications including aluminum smelters, chemical, graphite, metal refining, electro-winning, military, research, plasma torch, electron beam, traction, and heating/DC arc furnace applications. Ratings from 500 to 60,000 kVA.
• Dry Type Transformers Custom-designed transformers for drive duty and specialty circuits including multipulse 12, 18, 24, and 36 pulse configurations for industrial or hazardous applications. Ratings up to 15 mVA with primary voltages up to 34 kV.
• Water Cooled Transformers Economical and environmentally friendly transformers providing long life for rectifier duty applications. Up to 20 mVA with primary up to 34 kV. Multi-pulse units available (6, 12, 24, 36 pulse).
• Air Cooled Rectifiers DC power rectifiers typically for smaller installations with easy maintenance in cleaner environments. Ratings from 1 kA to 50 kA DC per 6 pulse, up to 1800 Vdc (or up to 2500 Vdc per main rectifiers page).
• Oil Filled Rectifiers High power transformer rectifier systems with fluid cooling, rated 110 kA and below per each 6 pulse, up to 1800 Vdc (or up to 2500 Vdc). Multi-pulse systems available.
• Water Cooled Rectifiers Compact E-House style power supplies placing transformer in main rectifier cabinet for environments from -40 deg C to +60 deg C. Up to 150 kA and 1800 Vdc with multipulse 34 kV primary maximum.
• Hydrogen Production DC Power Supply Custom DC rectifiers for hydrogen production using Alkaline, PEM, and Solid oxide electrolyzers. Range from 1MW to 100 MW. Features include Inflation Reduction Act compliance, remote monitoring, and combined factory testing. Up to 130,000 Adc and 1500 Vdc.
• Reactors and Inductors Large reactors and inductors for current limiting and filtering applications. Air, water or oil cooled; AC or DC; air core or iron core. Also includes interphase transformers, saturable core reactors, and tuning reactors. Negative return reactors for traction power systems available.
• Transformer Repair, Rewind, Retrofit and Remanufacturing Complete emergency and non-emergency repair services for transformers and power supplies including competitor units. Up to 60 mVA and 69 kV primary voltages for oil cooled; 34 kV and 15 mVA for dry and water cooled. Includes total redesign to extend service life by 20-25 years.
• DC Power Supply Repair, Retrofit and Remanufacturing Control upgrades and modernization for high power rectifiers of any type or brand. Services include on-site or facility-based repairs, retrofit to exact replacement equipment, and combined full current and full voltage factory testing.
• Turn-Key Solutions Complete electrical system solutions from high voltage plant transformer through power for process including installation. Includes HV input facility transformer, network, HV/MV/LV circuit breakers, harmonic filter, rectifier system, programmable controls, and services like harmonic studies, relay coordination, and training.
• Combined Full Current and Full Voltage Factory Testing Testing service where transformer and rectifier are tested separately, then together in their actual configuration prior to shipment. Enables formal heat run and checkout of all communications between units and to client's DCS for reduced commissioning time and improved quality.
• Power System Controls Proprietary high-tech controls for DC power supplies including microprocessor-based controllers, PLC interfaces (Allen Bradley or Siemens), multi-pulse configurations, phase lock loop control, and SCR monitoring. Non-proprietary PLCs ensure 30+ year availability. Custom HMI designs available.

Named customers2 records

Segments9 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• American Superconductor (AMSC)coreStrategic or Co-development PartnerNeeltran is part of American Superconductor (AMSC). As a subsidiary, Neeltran operates under AMSC's umbrella while maintaining its brand identity and specialized focus on DC transformers and rectifiers.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Market position

Strengths4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/neeltran
• Facebookfacebook.com/Neeltran-159484927408357
• LinkedInlinkedin.com/company/neeltran-inc

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Neeltran