Siemens 3AH3128-2PF55-0FD9-Z Vacuum Circuit Breaker

The Siemens 3AH3128-2PF55-0FD9-Z vacuum circuit breaker is a high-performance medium-voltage switching device designed for reliable power distribution and protection applications. Engineered for demanding industrial and utility environments, it delivers efficient fault interruption.

Technical Specifications

• Model: 3AH3128-2PF55-0FD9-Z A46+E13+F20+F30+R1G
• Part Number: 3AH31282PF550FD9ZA46E13F20F30R1G
• Brand: Siemens
• Type: Vacuum Circuit Breaker
• Rated Voltage: 12 kV
• Rated Current: 1250 A
• Breaking Capacity: 63 kA
• Pole Centre Distance: 275 mm
• Operating Mechanism Voltage: DC 220 V
• Closing Solenoid Voltage: DC 220 V
• 1st Shunt Release Voltage: DC 220 V
• 2nd Shunt Release Voltage: DC 220 V
• Auxiliary Switch: 12 NO + 12 NC
• Secondary Connection: 64-Pole Plug Connector
• Frequency: 50/60 Hz
• Power Frequency Withstand Voltage: 42 kV
• Protection Features: C.T.-Operated Release & Mechanical Interlocking
• Additional Features: Operating Cycle Counter, Breaker Tripping Signal, Closing Spring Charged Position Switches
• Accessories Included: Hand Crank & Routine Test Certificate
• Application: Medium Voltage Power Distribution & Protection