Designed specifically for applications that demand high numbers of switching operations, Siemens 3AH4 circuit-breakers for frequent operations deliver industrial-grade endurance with minimal upkeep. Its vacuum interrupter technology enables up to 45,000 switching operations without maintenance. With scheduled servicing performed, the 3AH4 restores full performance for another 45,000 operations — leading to a total lifecycle capacity of 90,000 switching operations.

• up to 24 kV
• up to 40 kA
• up to 3150 A
• up to 90,000 operations