What this MCCB is and what it protects
The Siemens SENTRON 3VA2163-7MN36-0AB0 is a 3-pole molded case circuit breaker (MCCB) rated for a continuous 63 A across the full ambient range from 40 °C to 70 °C — no derating needed as the panel warms up. It's specifically designed for motor protection, meaning the trip curve is shaped to handle motor inrush without nuisance tripping while still clearing faults fast. Phase failure detection is built in, so a lost phase on the line side won't leave a motor single-phasing and burning out.
Interrupting capacity — what the numbers mean for your panel
Interrupting capacity is where this MCCB earns its keep in a distribution panel. At 240 V it's rated for 330 kA — that's a massive fault current, typical for a main breaker position close to a large transformer. At 415 V and 440 V it still handles 242 kA, and at 500 V it's 187 kA. The steep drop to 3.7 kA at 690 V tells you this is a 480 V class breaker, not a 690 V main. For a motor protection MCCB on a 480 V line, the 187 kA at 500 V gives you plenty of headroom for most industrial service entrances.
Built-in auxiliary switches and trip characteristics
This MCCB comes with two high-performance auxiliary switches (HP type) factory-installed, so you get remote status indication without adding a separate accessory block. The trip unit has a minimum delay of 4 s and a maximum of 17 s — that's the thermal-magnetic or electronic trip band for motor starting. No undervoltage release, no ground-fault monitoring, and no communication function; this is a straightforward motor protection breaker, not a power monitoring device. Power loss is a modest 4 W maximum.
Panel fit and environmental limits
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON panelboards and distribution blocks. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. The base switch variant is 3VA2163-7MN36-0AA0 if you need the bare breaker without the auxiliary switches.