The frame holds the full 250 A up to 50 °C; above that, derate to 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. That thermal curve means a panel builder can load it at nameplate in most ventilated enclosures, but a sealed cabinet near other heat sources needs a 10–20 % headroom adjustment.
Interrupting capacity across voltage levels
The 3VA2225-5KP32-0HA0 delivers 187 kA at 240 VAC, 121 kA at both 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. For 690 V applications with fault currents above 4.5 kA, a current-limiting upstream fuse or a larger-frame MCCB is needed.
The 3-pole footprint matches standard SENTRON 3VA2 panel cutouts; a panel designed for a 250 A frame from another manufacturer may need a different mounting adapter or bus-bar spacing. The shunt trip release occupies the auxiliary slot — no additional auxiliary switch is fitted, so if remote status indication is needed, a separate auxiliary switch module must be ordered.