Product identity and key ratings
The Siemens SENTRON 3VA2225-8KP32-0BA0 is a molded case circuit breaker (MCCB) for line protection, with 3 poles and a rated continuous current Iu of 250 A. That 250 A holds flat from 40 °C through 50 °C ambient, then derates linearly to 200 A at 70 °C — the full curve is in the spec table, so no guesswork for a warm enclosure. Breaking capacity (Icu) runs from 440 kA at 240 V down to 53 kA at 690 V. At 415 V and 440 V it holds 330 kA; at 500 V it's 220 kA. That's serious fault-current headroom for a 250 A frame — the kind of rating that lets you avoid cascading upstream breakers in a high-SCCR panel.
Integration and physical fit
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. That 86 mm depth (3.4 in) is the critical number for gland-plate clearance in a shallow backpanel — verify your enclosure depth before committing the cutout. Three-pole block, no auxiliary contact version fitted as standard.
Auxiliary release and communication
Fitted with an undervoltage release (UVR) as the auxiliary release design — that's the / combo meaning the breaker trips on loss of control voltage, standard for safety circuits and emergency-stop chains. Communication function is present, though the protocol isn't specified in this listing; the integrated auxiliary trip order code is 3VA9608-0BB11. Maximum power loss is 48 W.