What this MCCB carries and where it fits
The Siemens 3VA2025-7HL32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 25 A continuous current across a 3-pole configuration. Its ETU320 electronic trip unit handles line protection duty — no ground-fault monitoring, no communication module, no undervoltage release on this variant. The 86 mm depth, 105 mm width, and 181 mm height fit standard SENTRON 3VA panel cutouts. IP40 on the front means it's protected against tools and wires >1 mm — fine for enclosed switchgear, not for washdown zones. 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. The breaker holds 25 A flat across the entire ambient range from 40 °C to 70 °C — no derating needed in a hot panel. 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. For 690 V applications, confirm the fault current stays under that threshold.
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.