Vacuum interrupters are the engineered heart of all Siemens medium‑voltage switchgear. Having pioneered vacuum switching technology in the early 1970s, we design our vacuum interrupters to deliver the best vacuum switching available on the market.
Typical operating performance reaches up to 30.000 cycles in circuit-breakers and up to three million cycles in contactors — maintenance‑free across the whole lifecycle.
For utilities, OEMs and industrial operators who demand uptime, safety and long-term economy, Siemens vacuum interrupters deliver proven German engineering, environmental responsibility, and market‑leading quality — a clear choice when performance and reliability matter most.
Experience consistent and dependable performance from our vacuum interrupters. Benefit from maintenance-free operation throughout their entire service life, reducing your operational costs and increasing uptime.
Utilize our innovative vacuum technology to contribute to an ecological energy transition. This advanced solution helps you achieve sustainable power distribution goals and reduce environmental impact.
Minimize your operational expenses through the minimal resistance of our vacuum interrupters. This allows for optimized customer design, leading to greater efficiency and cost savings in your systems.
Our hermetically sealed vacuum contact gap maintains consistent switching characteristics throughout the entire lifecycle. This design ensures stable and reliable performance for your operations, providing long-term dependability.
We use special contact materials for high short-circuit switching capacity and minimum forward resistance. This provides reliable switching even under difficult environmental conditions like vibration and fluctuating frequencies.
Our vacuum interrupters perform up to 30,000 operating cycles in circuit breakers and three million for contactors. This ensures maintenance-free operation throughout their service life, reducing your operational burden.