The interrupting ratings climb to 75.6 kA at 240 V and 52.5 kA at 415 V, which means it can be applied downstream of a transformer or generator with substantial fault current available, not just a weak utility service. The 4-pole construction covers three-phase-plus-neutral applications — common in European distribution panels where the neutral needs switching for isolation or TT earthing systems. The TM210 release has no electronic adjustment, so what you see on the nameplate is what you get: a fixed thermal curve and a fixed magnetic threshold. That simplifies spares holding: one part number, no configuration risk.
The 50 A continuous rating holds flat from 40 °C through 50 °C (–), then derates to 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C (–). That is a gentle slope — only 10 % loss at the top of the operating range — so you can mount it in a warm cabinet without oversizing the frame. The interrupting ratings step down as voltage rises: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V (–). At 415 V — the common three-phase distribution voltage in much of the world — 52.5 kA gives you headroom for a high-capacity transformer secondary.
This part carries a current lifecycle stage, meaning Siemens has not flagged it for discontinuation. It remains in the active SENTRON 3VA catalog as a standard line-protection MCCB. For a maintenance spares purchaser, that means you can still add it to your critical-spare cabinet without worrying about a last-time-buy window closing next quarter. The 15 000 latching-endurance cycles is typical for a molded-case breaker in distribution duty — it is not a switching device, but it will survive years of occasional manual operation for lockout/tagout.
The 3VA1050-3ED42-0AE0 measures 70 mm deep, 101.6 mm wide, and 130 mm tall (–). If you need remote tripping or monitoring, you add those as separate accessories.