Breaking capacity is the headline here: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V.
Auxiliary release and connectivity
The shunt trip (STL) release is a factory-integrated auxiliary that trips the breaker when a voltage is applied to its coil. It does not include an undervoltage release (no UVR on this variant). The breaker has no communication function — it is a standalone line-protection device, not a smart breaker with Modbus or PROFINET. No trip indicator on the front face. The voltage trigger (shunt trip) is present; the undervoltage release is not. If you need a UVR for your safety circuit, order a different 3VA2 variant with that option.
Environmental and storage
Operating: -25 °C to 70 °C. The storage low end is relevant for cold warehouses or unheated shipping; the breaker will handle it as long as it's not energized below -25 °C.
