What this MCCB carries and where it fits
The Siemens SENTRON 3VA2225-5HN32-0DA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C — that's the full-rated current, not a derated figure, so it holds the cure recipe steady in a high-heat panel near a tire press or a motor control center. Interrupting capacity is 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V — numbers that cover most industrial service entrances and distribution boards without cascading upstream. Thermal derating is published from 40 °C through 70 °C: 250 A holds flat through 50 °C, then drops to 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C — useful when the breaker sits in a non-ventilated enclosure or near steam lines. Designed for line protection (not motor or feeder), this variant includes an undervoltage release (UVR) — the auxiliary release type — so it can trip on loss of control voltage, which is common in safety circuits or E-stop strings. Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard SENTRON 3VA frame that drops into existing panel cutouts and busbar arrangements without rewiring.