The 86 mm depth, 105 mm width, and 181 mm height fit standard SENTRON 3VA panel cutouts. The 0.5 W maximum power loss is negligible for thermal budgeting inside a crowded enclosure.
Trip unit and thermal performance
The ETU320 is an electronic overcurrent release with adjustable pickup and time-delay curves. Minimum adjustable trip is 38 A, maximum is 300 A, which covers a wide motor or feeder range within the 25 A frame's thermal limits. Insulation voltage rated at 800 V gives headroom for 690 V systems, though the breaking capacity at 690 V drops to 3 kA — that's the limit of the arc chamber in this frame size.
Panel fit and interchange check
Mounts in the standard SENTRON 3VA panel footprint — same 105 mm width and 86 mm depth as the 3VA2116 frame. If a panel was cut for a 3VA2116-5HL32-0AK0, this 3VA2025 drops into the same DIN-rail or screw-mount pattern without rewiring.