What this 3VA2 breaker carries
The Siemens 3VA2510-6HL32-0DH0 is a 3-pole IEC circuit breaker on the 3VA2 frame, rated 1000 A continuous with a high breaking capacity class H — Icu of 85 kA at 415 V AC. The ETU320 LI trip unit provides adjustable overload protection (Ir = 400 A to 1000 A) and short-circuit protection (Ii = 1.5 to 10 x In). For a 1000 A frame, the 1.5x minimum setting lets you dial in a tight magnetic pickup for cable protection; the 10x max covers motor-starting inrush on a large VFD feed.
The ETU320 is a basic LI (long-time + instantaneous) electronic trip — no ground-fault or zone-selective interlocking, so keep that in mind if the spec requires LSIG or ZSI coordination. The undervoltage release is a factory-fitted accessory; verify the control voltage (208-230 V AC) matches the panel's control transformer tap before energizing. The nut keeper kit retains the terminal hardware during high-vibration environments like genset paralleling switchgear.