This 3VA2163-7MN36-0JH0 is a SENTRON molded case circuit breaker built for motor protection duty, rated a solid 63 A across the entire 40 °C to 70 °C ambient range — no derating curve to chase. The 330 kA breaking capacity at 240 V tells you it's sized for high-fault panels where the upstream transformer can dump serious energy into a bolted fault.
What the ratings mean for fit
The 63 A rating holds from 40 °C to 70 °C, so no derating is needed in hot panels. Breaking capacity drops from 330 kA at 240 V to 242 kA at 415 V and 440 V, then falls to 187 kA at 500 V. At 690 V it's 3.7 kA — that's the weak point: if your system runs 690 V with available fault current above 3.7 kA, this breaker won't clear it. Check your SCCR study before committing the BOM line. Phase failure detection is built in, and the auxiliary switch configuration — 2 auxiliary switches plus 1 trip alarm switch — gives you status feedback for a PLC or annunciator without adding a separate module. The shunt trip (STL) auxiliary release lets you remotely trip the breaker from an E-stop or safety relay.
Panel fit and integration
At 105 mm wide, 181 mm tall, and 86 mm deep, this breaker fits the standard SENTRON 3VA mounting footprint. The depth is the dimension that catches people — 86 mm means it clears most shallow enclosures, but check gland-plate clearance if you're retrofitting into a tight existing panel. The trip indicator and voltage trigger are present, so you get visual and electrical confirmation of a trip event — useful for troubleshooting a nuisance trip without cracking the panel.