The Siemens SENTRON 3VA1125-5EE46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 25 A at 40 °C, fitted with a TM220 thermal-magnetic overcurrent release. Its interrupting capacity reaches 187 kA at 240 V AC, 121 kA at 415 V AC, and 75.6 kA at 440 V AC — figures that give you selectivity headroom in high-fault panelboards without cascading upstream. This is a line-protection design (not motor-protection), intended for feeder or branch-circuit duty in distribution panels.
The 101.6 mm width (4 inches) is the standard 4-pole MCCB footprint for this class.
Rated current holds at 25 A from 40 °C up to 50 °C, then derates to 24 A at 55–60 °C, and 23 A at 65–70 °C.