It's built for line protection with an ETU350 electronic trip unit offering LSI protection — long-time, short-time, and instantaneous — adjustable over a wide range: overload protection Ir from 25 A to 63 A, short-circuit protection Isd from 1.5 to 10 times Ir, and instantaneous pickup Ii fixed at 12 times In.
The N-conductor protection is adjustable (OFF or 100%), giving flexibility for different system grounding schemes. Mounts in the standard IEC frame-100 footprint, so it swaps into existing 3VA2 panel cutouts without rework.
The ETU350 trip unit is the same platform used across the 3VA2 line, so settings and accessories are consistent if you're mixing frame sizes in the same panel. The 85 kA @ 415 V rating puts this in the high-breaking-capacity tier — suited for industrial mains distribution where fault current is substantial, not just branch protection downstream of a transformer.