The 4-pole design handles three-phase plus neutral, common for 400/415 V distribution panels or generator feeds where you need full neutral isolation. Breaking capacity is the headline number here: 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3 kA at 690 V. The steep drop to 3 kA at 690 V tells you this is a 240–500 V breaker in practice; at 690 V it's only suitable for low-fault branches.
The 3VA2040-7KP46-0AA0 measures 181 mm high × 140 mm wide × 86 mm deep — a standard 4-pole MCCB footprint for DIN-rail or screw-mount panel integration.
Trip unit and protection design
The ETU850 overcurrent release is an electronic trip unit with communication function and other measurement functions — meaning it can report current, energy, and event logs over a bus, not just trip. Line protection design means it's optimized for feeder and distribution circuits, not motor starting. No undervoltage release and no ground-fault monitoring version as shipped — those are add-on accessories if you need them.