The Siemens 3VA2225-6JQ32-0KH0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) built for line protection in distribution panels. Its continuous rating holds at 250 A up to 50 °C, then derates to 200 A at 70 °C. Breaking capacity reaches 242 kA at 240 V and stays at 187 kA through 440 V, then drops to 121 kA at 500 V and 4.5 kA at 690 V. That 242 kA figure at 240 V means it handles high-fault scenarios common on the secondary side of large step-down transformers without needing a current-limiting fuse upstream. The adjustable thermal-magnetic trip unit spans 375 A to 2500 A — the 250 A full-scale value is the frame rating, not the trip setting. Set the trip to match your downstream cable and load; the 2500 A maximum is for high-current tap protection or as a main in a sub-panel.
Lifecycle and sourcing
For a BOM freeze or a second-source gate, the closest functional peer is the 3VA2225-5JQ32-0AK0. The -6JQ32-0KH0 carries a shunt trip (STL) and a 2-auxiliary + 1-trip-alarm switch configuration.
Panel integration and dimensions
At 86 mm deep, 105 mm wide, and 181 mm tall, this 3-pole MCCB fits the standard SENTRON 3VA2 mounting footprint. The 105 mm width is the same across the 3VA2 frame up to 250 A, so a panel laid out for a 160 A 3VA2 accepts this 250 A unit without re-drilling the mounting plate. Maximum power loss is 48 W — relevant for enclosure thermal rise calculations in a sealed or high-fill panel. The basic switch order code is 3VA2225-6JQ32-0AA0 — that is the bare breaker without the plug-in electronic trip unit or communication module.
Auxiliary and release configuration
Factory-fitted with 2 auxiliary switches plus 1 trip alarm switch (HQ type), and a shunt trip release (STL). The shunt trip lets you trip the breaker remotely from an E-stop button, a PLC output, or a fire alarm relay — no undervoltage release on this variant, so it stays closed on power loss unless you drive the shunt trip. The trip indicator is present and the voltage trigger is available — meaning the breaker can signal its tripped state and accept a remote trip command. No other measurement function is fitted; this is a protection device, not a power meter.