The Siemens 3VA2025-5JQ46-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 25 A continuous current across a 4-pole configuration. It's built for line protection in distribution panels, sized to handle fault currents up to 187 kA at 240 V AC and 121 kA at 415 V AC — numbers that tell you it can sit upstream of a big transformer or a high-fault industrial feeder without needing a current-limiting fuse ahead of it. The 800 V rated insulation voltage means it's comfortable on 480 V and 600 V class systems, and the ground-fault monitoring uses summation current formation on L+N conductors — that's a built-in GFCI function, not an add-on module.
This MCCB delivers 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That steep drop at 690 V tells you the arc extinction is optimized for the 400–480 V range where most industrial panels live. At 690 V you're into specialty drive or marine gear — this breaker will clear a fault there, but you'd want to verify coordination with downstream devices at that voltage.
No phase-out notice, no last-time-buy.