Technical

Siemens 3VA1 vs 3VA2: Thermal-Magnetic vs Electronic MCCB

19 Jul, 2026
Posted by: Muhammet KUL

Siemens Sentron 3VA1 uses a fixed thermal-magnetic trip to 630 A; 3VA2 uses an adjustable ETU (ETU320 to ETU850) to 1000 A, and the two are not interchangeab...

Siemens Sentron 3VA MCCB: Full Range Review and Specifications

13 Jul, 2026
Posted by: Muhammet KUL

A brand-review breakdown of the Siemens Sentron 3VA MCCB range covering 3VA1 vs 3VA2 frames, ETU320-ETU850 trip units, breaking capacity classes, and UL-list...