What this MCCB carries and where it fits
The Siemens 3VA1112-5ED46-0AA0 is a SENTRON molded case circuit breaker with a TM210 thermal-magnetic overcurrent release, rated 125 A continuous at 40 °C across all four poles. It's a line-protection design — no undervoltage release, no ground-fault monitoring, no communication module — so it's a straight disconnect and short-circuit protector for a feeder or main in a distribution panel. The interrupting rating is the headline here: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and still 17 kA up to 690 V. That's a high-interrupting-capacity (HIC) frame — it clears a bolted fault on a large transformer secondary or a busway tap without needing a current-limiting fuse upstream. Dimensions: 101.6 mm wide (4 in), 130 mm tall, 70 mm deep. IP40 on the front. Thermal derating is modest: 125 A flat from 40 °C to 50 °C, then 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, 114 A at 70 °C. That's a shallow curve — useful if the panel runs warm but you don't want to oversize the breaker.
How it compares to the 3VA1112-5EE32-0AA0
The closest sibling in the same frame is the 3VA1112-5EE32-0AA0, which carries a different overcurrent release — the 5ED46 uses a TM210 thermal-magnetic, while the 5EE32 uses an electronic release. Both are 4-pole, 125 A frame, same interrupting ratings and physical footprint. If your BOM calls for the TM210, the electronic version won't drop in without a release swap and a change to the trip-curve logic.