Live Tank Circuit Breakers

Live Tank Circuit Breakers

Product Overview

We offer live tank circuit breakers for applications from 72.5 kV to 1100 kV, up to 80 kA, suitable for all different types of applications, in extreme temperatures or earthquake regions. Depending on the requirement, you can choose from live tank circuit breakers with three-pole or single-pole operation, as well as from porcelain or composite insulators.

Main features

  • For applications from 72.5 kV to 1100 kV, up to 80 kA
  • Spring drive mechanism (3AP) or electrohydraulic operating mechanism (3AT)
  • Self-compression principle (≤ 245 kV) or dynamic self-compression principle (≥ 245 kV)
  • Available with single- (FI, FE) or three-pole operation
  • Suitable for temperatures from -60 up to +55°C
  • Available with porcelain or composite insulators
  • Seismic withstand capability up to 0.3 g or 0.5 g
  • Gas leakage rate of less than 0.1 % per year
  • Type tested according to the latest international standards


  • Easy installation and commissioning: only few subassemblies
  • Inspection after 12 and maintenance after 25 years
  • 10,000 switching operations are guaranteed
  • Service life of up to 50 years
  • Over 110,000 circuit breakers delivered worldwide prove our best practices and years of experience
  • Minimal transportation costs
  • 24-hour service hotline
  • Our global production network saves customers time and transportation costs

More Information


+66 2 063 5262-3, +66 83 440 1404