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Smart Solutions for Safety Lighting and Safety Power Supply for Any Environment

Since our company’s founding in 1888, our quality products in the field of electrical engineering and mechanical engineering and construction have been internationally established.

We have got more than 90 years of experience in the field of safety power supply. In 1916, Ruhstrat built the first emergency lighting system for places of assembly. As a competent supplier of battery-assisted power supplies, we specialize not only in modern safety lighting systems but also in DC power supplies, battery-assisted central power supply systems (BSV – previously ZSV) as well as uninterrupted power supplies (UPS). Ruhstrat’s BSV / ZSV devices are used for surgical lighting and critical medical devices in hospitals. Our USV devices maintain power supply in industrial plants and in computer networks.

We provide end-to-end solutions and support from planning to installation. Moreover, we supply anything from a single source, provide immediate replacement and, if required, offer service and maintenance. We are happy to meet customer requests as well as the most difficult technical requirements. The installation, maintenance, and condition of a safety lighting system are governed by a large number of rules and regulations that are interlinked by references. This concerns both lighting and electrotechnical issues. This concerns both lighting and electrotechnical issues. Many German rules and regulations which had been effective in the past have more recently been revised or replaced by European rules and regulations.

The most important installation guidelines concerning safety lighting systems for electrotechnical requirements are DIN EN 50172 norms (VDE 0108-100), design DIN VDE 0108-100 norms and DIN VDE 0100-718 norms. These electrotechnical regulations are supported by a set of photometric parameters stipulated in DIN EN 1838 and DIN 4844 norms (or ISO 3864). The regulations according to EN 60598 part 1 and EN 60598 parts 2-22 contain general requirements for luminaires as well as emergency lighting. These are crucial for producers regarding the electrical, thermotechnical, and mechanical safety of the luminaires.


Corporate action means future-oriented and sustainable behaviour. As a family-owned business, RSV Ruhstrat Stromversorgungen GmbH has been committed to this principle since its inception. While this relates in particular to our core business, our holistic approach extends even beyond a customer and employee focus. As we regard our company to be part of a wider part of the society in which we operate, we are committed to responsible action.


We are passionate about our customer demands. We not only want to satisfy you, we also want to inspire you. We are especially distinguished through our customer-oriented sales department, the associated service concept as well as the top quality of our products and services. One of our top goals is to achieve perfection in any area of action. New requirements will be addressed optimistically, dynamically, and practically – to support the customer even better.


As a responsible employer, we place a great deal of emphasis on the well-being of our employees. We support the compatibility of family and career, including part-time and/or home office jobs for parents, or for employees who have to care for family members. Furthermore, we focus on the strengths of our employees and support them with further training. We welcome improvement suggestions as well as constructive criticism. We place importance on team work to solve complex assignments.



The company was established by brothers Ernst and Adolf Ruhstrat


In cooperation with the university, an adjustable slider was developed


The first resistance-heated high-temperature furnace was developed


Production of high-temperature furnaces for industrial use


Delivery of first emergency lighting with self-contained batteries


Headquarters was relocated to Bovenden/Lenglern


Ruhstrat receives certification according to DIN ISO 9001 norms


Sale of the two business units Industrial Furnaces and Transformers to Eisenmann AG


After the insolvency of Eisenmann AG, takeover of the transformers division. Integration at the site in Bovenden/Lenglern.


DIN ISO 9001:2015
DIN ISO 9001:2015