What it is and what it does
The Siemens SENTRON 3VA2225-6JP32-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, designed for line protection in industrial power distribution panels. Its interrupting capacity reaches 242 kA at 240 V AC and 187 kA at 415 V AC, so it can clear high-fault currents typical in large switchboards or transformer secondaries without upstream coordination issues. The breaker includes a communication function and a shunt trip release (STL), plus two auxiliary switches and one trip alarm switch.
Key ratings and what they mean for fit
At 250 A continuous, this MCCB covers large motor feeders, main incoming supplies, or bus couplers in 400 V class systems. The thermal derating curve shows it holds full 250 A up to 50 °C ambient, then drops to 238 A at 55 °C and 200 A at 70 °C — useful when the breaker sits in a warm enclosure near other heat sources. Breaking capacity at 690 V drops to 4.5 kA, so for 690 V applications this breaker is only suitable downstream of a current-limiting device or on low-fault branches. The 86 mm depth and 105 mm width fit standard Siemens SENTRON mounting patterns; the 181 mm height is typical for 3-pole MCCBs in this frame size.
Integration notes
Mounts in a standard Siemens SENTRON panel or enclosure on a DIN rail or fixed mounting plate; the 3-pole form factor matches existing busbar and cable lug layouts for 250 A class breakers. The shunt trip (STL) allows remote tripping from a safety PLC or emergency-stop circuit — verify coil voltage compatibility with your control voltage before wiring. Communication function supports remote status and trip alarm monitoring over a fieldbus or Ethernet.