That means you can coordinate selectivity downstream without swapping hardware. At 690 V it still clears 6.3 kA, enough for 690 V drives or transformer secondaries. Two auxiliary switches plus a separate trip-alarm switch (HQ) give you status feedback for the SCADA or panel indication.
Temperature derating and real-world current
Above that, the ETU350 derates linearly: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C.
For a critical spare, order one now and rack it before the existing breaker ages out. The 20,000 mechanical endurance cycles mean it's built for years of service in a typical industrial panel, but having a spare in the cabinet means no sleep lost if the primary fails.
What's included and what's not
The breaker ships with the ETU350 trip unit installed and the shunt trip (STL) fitted. It also includes the basic switch (order code 3VA2225-7HN32-0AA0) and the integrated auxiliary trip module (3VA9688-0BL30).
It mounts directly onto the panel backplate or onto a DIN rail adapter (sold separately). The 86 mm depth includes the handle and terminals, so plan for at least 100 mm clearance behind the door.