Breaking capacity is 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — that covers most North American and European distribution voltages with headroom for high-fault locations like substation feeders or large motor control centers.
Dimensions are 181 mm high, 140 mm wide, 86 mm deep — a standard 4-pole MCCB footprint that drops into most SENTRON 3VA mounting bases and busbar systems. The ETU320 release supports line protection only — no ground-fault monitoring, undervoltage release, or communication function on this variant. If you need those, you would step up to a 3VA2 with a different suffix.