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We offer live tank and dead tank circuit breakers as well as hybrid solutions combining different functions in a compact design, such as our dead tank compact (DTC) and our disconnecting circuit breakers (DCB). All of our products are manufactured based on our proven modular design and are available with porcelain or composite insulators. Choose the right product for your specific requirement from our portfolio.
The technology of our products sets international trends. We continuously ensure our high quality through optimized production processes, constant product development and a certified quality management system.
|Siemens high-voltage circuit breakers, regardless of type or voltage range, are designed in a well proven modular platform concept. This leads to a wide variety of circuit breaker types and strong flexibility with regard to various applications according to our customers’ requirements.|
The main components, such as the operating mechanism, control system, base frame, kinematic chain and insulator designs are identical and based on decades of manufacturing and operating experience. Our GIS switchgear range also includes the same interrupter units, operating mechanisms and control elements. By applying this proven modular design not only at our lead factory in Germany, but also within our global manufacturing network, we are able to fulfill the highest expectations regarding availability and reliability at eminently competitive prices.
|Our complete 3AP family up to 800 kV and above relies on our arc-quenching principles, either the self-compression or the dynamic self-compression principle using the thermal energy of the arc. Siemens patented this method of arc quenching in 1973 and has continued to develop the technology of the self-compression interrupter unit ever since. In short-circuit breaking operations, the actuating energy required is reduced to the energy needed for mechanical contact movement.|
The drive concept of the 3AP circuit breaker family is based on the patented stored-energy spring principle. The mechanism types differ in terms of the number, size and arrangement of the opening and closing springs. Both the opening and closing springs are located inside the operating mechanism, thereby achieving a simple and sturdy device. Proven design principles such as vibration-isolated latches and load-free isolation of the charging mechanism were retained.
Advantages of the stored-energy spring mechanism:
The electrohydraulic operating mechanism has been used in 3AT and 3AQ circuit breakers for more than 20 years. Even the highest switching voltages are safely brought under control in the shortest possible time, and it is also possible to master the most difficult switching tasks.
Advantages of the electrohydraulic operating mechanism:
Areas of application:
Characteristics of composite insulators:
Our global production network ensures that we are always reachable and close to our customers. This reduces transportation costs and delivery times, and also improves our carbon footprint.
As a leader in the global market, we offer circuit breakers that meet the differing environmental, technical and economic conditions of countries around the world.
countries around the world use Siemens circuit breakers
circuit breakers in operation
Downloads, support and services
You can find informational materials on our circuit breakers and details about our services here.
Siemens circuit breakers deliver customized solutions, the latest technologies and decades of development experience from a single source. Do you have any questions? Are you looking for more information about our circuit breakers? We have experts to assist you with any issue.