Medium-Voltage Vacuum Replacement Generator Circuit Breakers
Tested to IEC/IEEE 62271-37-013 and suitable for generators up to 200 MW
Replacement generator circuit breakers (GCBs) provide a cost-effective way to upgrade from gas to current vacuum technology while increasing equipment reliability and minimizing downtime. Siemens offers medium-voltage vacuum replacement generator circuit breakers for leading OEM models for voltages up to 24 kV with interrupting capabilities up to 100 kA for both indoor and outdoor applications.
Why upgrade to replacement vacuum generator circuit breakers?
Reduce lifecycle maintenance
Reduced operating and maintenance expenditures
Improved employee and environmental safety by eliminating SF6 gas
Preserved investment in existing cubicles
Reduced downtime and minimal changeover time during upgrade
Siemens Innovation: Bringing vacuum to the generator switching application
Siemens 3AH37 is the first vacuum circuit breaker worldwide that can carry a normal current up to 6,300 A sustained at up to 24 kV controlling short circuit currents up to 72 kA without forced cooling. Moreover it can handle up to 8,000 A with forced cooling.
Vacuum offerings for ratings up to 24 kV, 100 kA and 12,500 A.
Custom engineering for easy installation
Siemens replacement generator circuit breakers are custom engineered to fit each application.
Quality starts at the core
Siemens core 3AH operator is featured in our entire medium-voltage circuit breaker product line, including our replacements, providing an extremely reliable standard design allowing for streamlined parts and maintenance translating into cost savings.
3AH operator features:
Our vacuum generator circuit breakers are manufactured in Germany and delivered to your site for modification and installation. The Berlin factory has been producing circuit breakers since 1920.
The vacuum generator circuit breaker retrofit is performed on-site by Siemens field engineers. Our National Field Service organization is headquartered in Wendell, North Carolina, located just east of Raleigh. Siemens has been assembling low- and medium-voltage replacement circuit breakers at this location since 1980.
Major cost savings with vacuum replacement generator circuit breakers
With minimal operational and maintenance expenses adding up to significantly lower lifecycle costs, upgrading from gas to vacuum technology provides a quick payback on your investment.
National Field Service
Siemens Field Service organization can offer local support for your electrical equipment needs. For service or parts, call our 24/7 Customer Care Center.
To request a service or parts quote online, visit: www.usa.siemens.com/techsupport