Brands of the R&S Group

local strength, global quality – We guarantee energy

Why a family of brands?

With our locally rooted brands, we combine close-to-market engineering on site with group-wide manufacturing and quality expertise. This reduces project risks and speeds up execution – from specification to commissioning.

Your benefits at a glance

  • Market proximity & standards compliance: Local teams know grid and construction regulations (e.g. IEC/EN/ENATS/ANSI) as well as permitting procedures – smoother submissions, faster approvals.
  • High delivery capability: Regional production and group-wide capacities ensure short lead times and high planning reliability.
  • Technical depth: Each brand is a specialist (e.g. cast resin, distribution or power transformers) – precise design instead of compromise.
  • Life-cycle focus (Total Cost of Ownership/TCO): Loss-optimised designs, robust material portfolio, service & fleet care – low operating costs over decades.
  • Supply chain resilience: Several European factories, harmonised standards, joint quality assurance and a stable sub-supplier network – reduced dependencies.
  • “We guarantee energy”: One shared promise for reliability, on-time delivery and dependable project execution.

Our Brands

Rauscher & Stoecklin (Switzerland | Poland)

Focus: Oil distribution transformers & electrotechnical components
Since 1919, Rauscher & Stoecklin has stood for Swiss precision in power distribution. With the new plant in Krzeczów (Poland), the brand expands its capacities for oil distribution transformers – with reliable lead times for Central Europe and a wide range of variants.
Strengths: Compact designs, low-loss configurations, project-specific adaptations (grid connection, storage, PV/wind, industry).
more

Tesar (Italy | Poland | Gulf region)

Focus: Cast resin dry-type transformers & instrument transformers
Tesar has been developing and manufacturing cast resin transformers since 1979, featuring high fire safety and minimal maintenance. Since 2013, Tesar Polska has been producing cast resin transformers as well as current and voltage transformers in the industrial area of Kraków. Tesar Gulf operates a production site in Al Ain (UAE) for the Gulf region – ideal for short logistics routes and project-specific standard requirements.
Strengths: Safety and environmental friendliness, almost maintenance-free operation, more than 100,000 dry-type transformers installed worldwide, ideally suited for data centres, industry & infrastructure and renewable power supply.
more

Kyte Powertech (Ireland)

Focus: Distribution transformers (pole-mount, pad-mount, station type)
Founded in 1977, Kyte Powertech produces over 16,000 distribution transformers per year with a manufacturing capacity of 6,500 MVA – optimised for IEC/EN/BS/ENATS/ANSI. High capacity, robust designs and short delivery times for Ireland, the UK and Western Europe.
Strengths: Grid connections, urban and plant distribution networks, renewable integration, low losses according to EU Ecodesign.
more

ZREW (Poland)

Focus: Power transformers up to 160 MVA
ZREW designs custom-engineered power transformers for transmission and distribution networks, power generation (renewables, GSU/step-up units) and industry – with cooling systems ONAN/ONAF/OFAF/ODAF, special insulation systems and acoustic optimisation.
Strengths: Project engineering according to IEC/IEEE and customer specifications, high reliability, life-cycle monitoring (e.g. DGA/condition monitoring), ideally suited for power plants, CHP plants, PV projects, wind farms and distribution networks.
more