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Why SER disconnects?

Built for overhead distribution, Siemens SER single‑insulator disconnects combine rugged construction with a compact, lightweight form factor to help crews work faster and keep networks resilient. Ratings from 15–38 kV, up to 900 A, with BIL up to 200 kV deliver dependable performance in demanding conditions.

Portfolio options

  • Voltage classes: 15 kV, 25 kV, 38 kV
  • Continuous current: 600 A, 900 A
  • Lightning impulse (BIL): up to 200 kV

Key benefits

Improve grid reliability

A robust single‑insulator architecture and proven materials support stable operation on overhead lines, even in harsh environments.

Simplify field maintenance

A compact, lightweight design eases handling and installation, reducing conductor loading and helping crews complete switching tasks efficiently.

Reduce lifecycle cost

Durable contacts and ventilated blade construction provide superior current‑carrying characteristics that help minimize outages and service interventions.

Featured capabilities