What this 3VA1025-3ED32-0AE0 is and what its ratings mean for your panel
The Siemens 3VA1025-3ED32-0AE0 is a SENTRON molded case circuit breaker (MCCB) rated for 25 A continuous current (Iu) at up to 50 °C ambient, with a TM210 thermal-magnetic release for line protection — no undervoltage or shunt trip fitted, no communication module, no ground-fault monitoring. It carries 4 HQ auxiliary switches built in, so you get status feedback without an add-on block. The interrupting ratings climb steeply with voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V — that 75.6 kA at 240 V means it can clear a dead short on a 240 V feeder without the arc flashing over to adjacent gear, which is the kind of fault current you see on large transformer secondaries or bus-riser taps. The 25 A rating holds flat from 40 °C to 50 °C, then derates to 22.5 A at 70 °C; if your enclosure runs hot, you lose about 10 % of headroom by the top of the operating range.
Panel fit and integration notes
The 3VA1025-3ED32-0AE0 measures 130 mm tall, 76.2 mm wide, and 70 mm deep — a 3-pole MCCB footprint that fits standard Siemens SENTRON 3VA mounting plates and busbar systems. The IP40 front protection means it is rated against tools and wires >1 mm entering the face, but not against dust ingress or splash; keep it inside a closed enclosure. The TM210 release is fixed (not adjustable for long-time or short-time pickup), so coordination studies rely on the published time-current curve — no field tweaking of the trip threshold.