MCCB for line protection — 40 A, 4-pole, ETU350
Rated insulation voltage is 800 V, and the interrupting capacity reaches 330 kA at 240 V AC, 242 kA at 415/440 V, and 187 kA at 500 V — figures that give substantial headroom for high-fault installations.
Panel fit and thermal profile
Dimensions are 181 mm high, 140 mm wide, 86 mm deep — a 4-pole MCCB that fits standard SENTRON 3VA panel footprints. Maximum power loss is 1.2 W per pole, low enough that internal cabinet heating is negligible for most layouts. The storage minimum matters for unheated warehouses in cold climates — the breaker can sit at -40 °C without damage.
This is a current-production Siemens SENTRON 3VA series MCCB. The trip indicator is also absent, so fault indication relies on the panel's upstream signaling.