Siemens 3VA4 3VA4170-5ED34-0AA0 Circuit Breaker

Siemens 3VA4170-5ED34-0AA0 is a three-pole molded-case circuit breaker in the Siemens 3VA4 family (UL frame 125) engineered to protect 3‑phase power distributions up to 70 A. It is rated for AC operation up to 690 V and provides a published breaking capacity of 35 kA at 480 V. The device features fixed overload protection at In = 70 A and instantaneous short‑circuit protection Ii = 10 × In (approximately 700 A), with trip characteristics TM210 and FTFM. Weighing about 0.743 kg, the unit delivers up to 16 W of power loss (roughly 5.33 W per pole) and offers mechanical endurance around 15,000 operating cycles and electrical endurance of about 8,000 cycles at 480 V (4,000 cycles at 600 V). This 3-pole breaker is suitable for industrial electrical distribution, including HVAC and general equipment protection, in enclosures designed for 3VA4 UL frame devices.