vacuum circuit breaker / dead-tank / high-voltage / outdoor
Max.: 3 A
Min.: 1.2 A
Max.: 38 kV
Min.: 15 kV
In 2006, Siemens introduced the new global class dead-tank SDV6 outdoor vacuum circuit breaker with the trustworthy Siemens 3AH3 vacuum circuit breaker. Designed specifically for the U.S. ANSI market, the stationary distribution vacuum circuit breaker has passed the entire ANSI type-testing program and provides a significant increase in performance over its predecessor, the SDV4A, in a full range for three voltage classes (15 kV, 27.6 kV, 38 kV) and up to 40 kA. Each group is specifically designed to optimize space and material for the voltage class while retaining common features across the entire product line.
The distinguishing feature of SDV6 dead-tank technology is that the interrupter chambers are accommodated in an earthed metal housing. With the 3AH3 vacuum interrupter, the poles are mounted directly onto the operator. A gearbox allows for quieter operation with reduced vibration. All key components are accessible from the front for easy servicing. However, in outdoor applications maintenance is only needed at a 5 year/10,000 operations on any circuit interval, if the ANSI usual service conditions are applied.