REDUR GmbH & Co. KG

What REDUR GmbH & Co. KG does

REDUR GmbH & Co. KG is a German manufacturer of measurement transformers (current transformers, voltage transformers) and transducers, headquartered in Niederzier, Germany. The company operates as a wholly-owned subsidiary of the Swiss industrial group Phoenix Mecano AG (SIX Swiss Exchange: PM) and was founded as REDUR Messwandler. Its product portfolio comprises the REGULUS and IPNG low-voltage window/wound-type current transformer series (with primary currents up to 7,000 A and 30 mm compact depth), split-core RSC 18/28/42 transformers for retrofit applications, cast resin transformers rated up to 10,000 A for harsh environments, summation current transformers supporting up to nine inputs, medium-voltage VIS and VUS transformers rated to 36 kV, high-precision zero-flux RES 100 systems with 100 ppm accuracy up to 500 kHz, and the IPU/IPU+ integrated transducer series in which the IPU+ delivers the first digital Modbus output with optional Bluetooth transmission. Since 2022, REDUR has operated ISMET as a product brand, extending the portfolio into transformers, chokes, and filters (including sinus and du/dt filters) for industrial machinery, wind and solar, railway, ship, and power-supply applications.

REDUR serves an exclusively B2B customer base composed of switchgear manufacturers, energy metering companies, EV charging infrastructure providers, renewable energy integrators, and industrial plant operators across DACH, BeNeLux, France, and Scandinavia. The company operates an enterprise field sales model with territory-mapped regional sales managers, complemented by sales partners, trade show presence at PCIM Europe and KOOPMANN Energietage, and digital demand generation via LinkedIn Ads and Google remarketing. Revenue is generated through hardware sales of standard and customized instrument transformers, with custom solutions offered even in low volumes. Pricing is not publicly disclosed; terms apply solely to entrepreneurs under §310 BGB, with a €25 surcharge on net orders under €100. All products comply with IEC 61869, DIN 42600, and DIN EN 50274. Management comprises General Managers Dr. Lothar Schunk and Oliver Huppertz, alongside a dedicated sales leadership team for current transformers and for transformers/chokes/filters.

Name

REDUR GmbH & Co. KG

Legal name

REDUR GmbH & Co. KG

Website

https://redur.de

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

REDUR GmbH & Co. KG is a German B2B manufacturer of current transformers, voltage transformers, and transducers, including zero-flux, digital (Modbus/Bluetooth), and medium-voltage variants. Operating as a Phoenix Mecano subsidiary, it serves switchgear, energy metering, EV charging, renewable energy, and industrial customers across DACH, BeNeLux, France, and Scandinavia.

Ownership category

akta.pro rank

Product category

Instrument Transformers (Electrical Measurement)

NAICS

Power, Distribution, and Specialty Transformer Manufacturing (335311), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Electrical Equipment Manufacturing (33531)

SIC

Power, Distribution & Specialty Transformers (3612), Electronic Coils, Transformers & Other Inductors (3677), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Instrument Transformers (CTs/VTs) & Sensors (Conventional/Optical) (EUADACAG)

akta.pro secondary industries

Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA), HVDC Converter Transformers, Reactors & Harmonic Filters (EUADAMAC), Metering & Grid Measurement (Smart Meters, CT/VT, PQ Meters) (IMAGAAAH)

Keywords

• Instrument transformers
• Current transformers
• Voltage transformers
• Measurement transducers
• Power electronics components

Headquarters

HQ city

Niederzier

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Current Transformer Sales: REDUR generates revenue through the manufacture and sale of low-voltage and medium-voltage current transformers. Products include window/wound type transformers (REGULUS, IPNG series), split core transformers (RSC series), cast resin transformers, summation transformers, and taped window type transformers.
2. Transducer and Integrated Electronics Sales: Sale of current transformers with integrated transducers (IPU/IPU+ series) and standalone transducers. The IPU/IPU+ series combines current transformer and transducer in one device, while the RES100 offers high-precision zero-flux measuring systems.
3. Customized Solutions: Revenue generated from developing and manufacturing custom-tailored instrument transformers for specific customer applications, including small batch production of customized solutions.
4. ISMET Product Brand: Since 2022, REDUR has owned ISMET as a product brand, which offers transformers, chokes, and filters for industrial applications including machinery, wind and solar energy, railway technology, ship equipment, and power supply.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

REDUR manufactures and sells measurement transformers — primarily current transformers (REGULUS, IPNG, RSC split core, summation, cast resin), medium-voltage current and voltage transformers (VIS, VUS) for system voltages up to 36 kV, and integrated-electronics transducers (IPU/IPU+ and RES100 zero-flux) — plus customized solutions and, through the ISMET brand, transformers, chokes and filters. Products are used in switchgear construction, renewable energy systems, EV charging, energy metering, and industrial power quality applications.

Product overview

REDUR GmbH & Co. KG is a manufacturer of measurement transformers offering a comprehensive portfolio of products organized around several core lines. The main product categories include: (1) Low-voltage current transformers comprising the REGULUS series (compact window/wound type for up to 7000A) and IPNG series (for smaller primary currents); (2) Split core current transformers (RSC series) for retrofitting; (3) Summation current transformers for combining multiple inputs; (4) Cast resin current transformers for harsh environments; (5) Current transformers with integrated electronics including the IPU/IPU+ series (with built-in transducers, where IPU+ offers digital Modbus signals) and the high-precision RES 100 zero-flow transformer; (6) Medium-voltage transformers (VIS and VUS series) for up to 36kV; and (7) Customized solutions for specific application requirements. Since 2022, the ISMET brand (transformers, chokes, filters) is also part of REDUR. All products comply with IEC 61869, DIN 42600, and DIN EN 50274 standards. The company operates as part of the Swiss technology group Phoenix Mecano.

Differentiator

Problem solved

Functional benefit

Brands

• ISMET: Product brand for transformers, chokes and filters for machine and plant construction, wind and solar energy, railway technology, ship equipment and energy supply. Known as inventor of sine and du/dt filters.

Products and services

• REGULUS Series Current Transformers Compact window and wound type low-voltage current transformers with a depth of only 30mm, available for primary currents up to 7,000A. Designed for switchgear construction and general industrial measurement applications.
• IPNG Series Current Transformers Window type low-voltage current transformers for smaller primary currents and higher burdens, complementing the REGULUS series. Features unbreakable polyamide housing.
• RSC Split Core Current Transformers Split core current transformers ideal for retrofitting without disassembling existing components. Available in RSC 18, RSC 28, and RSC 42 variants for different current ranges, with a patent-pending click-off hinge on RSC 42.
• Summation Current Transformers Current transformers that add up the secondary currents of up to nine main current transformers, enabling measurement with a single instrument. Supports equal or unequal main CTs.
• Cast Resin Current Transformers Highly shock- and vibration-resistant current transformers for harsh industrial environments, designed for primary currents up to 10,000A with secondary currents of 1A or 5A.
• IPU / IPU+ Current Transformers with Integrated Transducer Current transformers with built-in transducers for sinusoidal alternating currents from 30A to 1500A. The IPU+ is the first digital current transformer, combining current transformer, transducer, and analogue-to-digital converter in one device, delivering Modbus digital signals with optional Bluetooth/wireless transmission and a 20 ms output time.
• RES100 Zero-Flux High-PPrecision Current Transformer High-precision zero-flux measuring system for direct and alternating current up to 500 kHz with 100 ppm accuracy and very low frequency and angle errors. Originally developed for laboratory applications with extremely high accuracy requirements.
• VIS Series Medium-Voltage Current Transformers Medium-voltage current transformers for system voltages up to 36 kV and primary rated currents up to 3,000A. Compact design suitable for applications with tight installation space such as industrial plants, power plants, and utility substations.
• VUS Series Medium-Voltage Voltage Transformers Medium-voltage voltage transformers for system voltages up to 36 kV and primary rated voltages up to 30,000V.
• Customized Current Transformer Solutions Tailored measurement transformer solutions developed to meet specific customer requirements, including special winding technologies and custom configurations, available even for small batch quantities.
• ISMET Transformers, Chokes and Filters Transformers, chokes, and filters (including SINUS and du/dt filters) for machine and plant construction, wind and solar energy, railway technology, ship equipment, and power supply. ISMET has been a product brand of REDUR since 2022.

Quantifiable outcome

• Five times faster transmission speed (output time 20 ms) with IPU+ digital transformers compared to analogue systems
• +3 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core and minor.

• ISMETcoreOthers · 1 January 2022ISMET is a leading European provider for the development and manufacture of transformers, chokes, and filters. ISMET has set impulses in the industry as the inventor of sinus and du/dt filters. Since 2022, ISMET has been owned as a product brand by REDUR GmbH & Co. KG, extending REDUR's product portfolio for industrial applications.
• TRAMAGminorGTM or Marketing PartnerREDUR and TRAMAG co-exhibit together at trade shows including PCIM Europe 2024. TRAMAG appears to be a related entity in the power electronics transformer space with which REDUR shares exhibition space.

Scale indicators3 records

Recent moves7 records

Expansion highlights6 records

Emerging players

• Schaffner Group: Swiss specialist in EMC filters, chokes, and transformers for power electronics and railway/industrial applications. Directly comparable to REDUR's ISMET brand portfolio of chokes, sine/du/dt filters, and transformers for renewable and railway customers.

Direct peers

• Pfiffner Group: Swiss manufacturer of instrument transformers (current and voltage) for MV/HV substations and revenue-grade metering. Directly comparable to REDUR's medium-voltage VIS/VUS transformer lines and conformity-assessed CT portfolio.
• Trench Group (Siemens Energy): Global specialist in instrument transformers, coils, and reactor products for transmission and distribution. Comparable to REDUR's MV CTs and cast-resin transformers for substations and industrial power applications.
• LEM Holding SA: Swiss-based specialist in current transducers and isolated current measurement. Directly comparable to REDUR's IPU/IPU+ transducer-integrated CT range and RES100 zero-flux measurement devices, serving similar power-electronics, EV charging, and renewable customers.
• Arteche: Spanish specialist in instrument transformers, current/voltage sensors, and power quality solutions for utilities and industry. Closely comparable product portfolio and customer base to REDUR's MV transformer and metering business.

Broad incumbents

• Schneider Electric: Diversified energy management and automation incumbent with current transformer offerings inside its switchgear and power metering platforms. Targets the same switchgear OEMs, EV charging, and metering customers as REDUR, but as part of a much broader portfolio.
• ABB: Global incumbent offering instrument transformers as part of a broad electrification portfolio (substations, drives, switchgear). Overlaps with REDUR on MV CTs and metering, but operates at vastly larger scale across all segments.
• Siemens Energy: Major incumbent supplying instrument transformers through its Trench Group and broader grid technologies portfolio. Comparable end-market exposure (utilities, industry, renewables), but a much wider product breadth than REDUR.
• Eaton: Global power management incumbent with instrument transformer and metering products embedded in switchgear, UPS, and industrial offerings. Comparable in MV CT and metering applications, but competes from a much broader electrical portfolio.

Others

• Phoenix Mecano AG: Publicly listed Swiss parent of REDUR and other specialised component manufacturers. Relevant context for parent-level capital allocation and group distribution reach, but not an operating competitor; included for ownership-structure clarity.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/redur-gmbh-co-kg

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries1 record

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 REDUR GmbH & Co. KG