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Eaton 3AS4 Vacuum Circuit Breaker

3AS4 Vacuum Circuit Breakers are a new generation of indoor vacuum circuit breakers with integrated encapsulated pole units. These circuit breakers can be used in harsh environments or where frequent operations of rated working current or multiple switching of short circuit current are required.

Core features

  • Powerful switching and maintenance-free care using Eaton’s internationally recognized vacuum interrupter
  • Proven APG encapsulation process to prevent damage from harsh conditions
  • Complete compatibility with the mainstream domestic medium voltage distribution panel KYN28, lowering costs for Chinese users
  • Guaranteed interchangeability and universality with all products being subjected to pre-engineering tests for standard panels
  • Stable performance proven over hundreds of mechanical operation running-in tests on all products before they are delivered
  • Proven spring mechanism for stable operation, strong protection against corrosion and a long service life
  • Class E2 electrical endurance, class M2 mechanical endurance and class C2 breaking capacitive current as per GB 1984-2003

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