What this MCCB carries on the nameplate
The Siemens 3VA2225-5KP32-0CL0 is a SENTRON molded case circuit breaker rated 250 A continuous at 40 °C, 3-pole, designed for line protection. Breaking capacity runs 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V — so the SCCR headroom shifts with your system voltage; at 415 V you've got 121 kA to work with, which covers most industrial secondary distribution. Thermal derating starts at 55 °C: 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, 200 A at 70 °C. If the panel ambient sits above 50 °C, the continuous current drops — plan the load accordingly. The breaker includes a communication function, an undervoltage release, and a full auxiliary switch set: 2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ. The basic switch itself is order code 3VA2225-5KP32-0AA0.
Panel fit and dimensions
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — standard 3-pole MCCB footprint for a SENTRON 3VA frame. The 86 mm depth (3.39 in) means it clears most 200 mm deep enclosures with room for wiring gutters.
What the ratings mean for the buyer
The 250 A rating at 40 °C is the continuous current the breaker carries without tripping — size your downstream load to this, not the maximum interrupting rating. The 187 kA at 240 V is the fault current it can safely interrupt at that voltage; at 690 V that drops to 4.5 kA, so verify the available fault current at your system voltage before specifying. Power loss is 50.5 W maximum — relevant for thermal management inside a sealed enclosure. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.