What this MCCB delivers — and where it fits
The Siemens SENTRON 3VA2163-7MS36-0DA0 is a 3-pole molded case circuit breaker (MCCB) with a rated current of 63 A across the full ambient range from 40 °C to 70 °C, meaning no derating is needed for elevated panel temperatures up to that limit. Its interrupting capacity hits 330 kA at 240 VAC and still holds 242 kA at 415 VAC — figures that place it in the high-fault-current tier, suitable for transformer secondaries or large motor-control centers where available fault current is severe. The design is explicitly for starter protection, so the trip curve and internal construction are tuned for motor-start inrush and overload profiles rather than straight feeder duty. An integrated undervoltage release (UVR) is fitted as standard, allowing the breaker to drop out on loss of control voltage — a common requirement for safety circuits and emergency-stop chains.
Lifecycle and sourcing reality
The basic switch variant is order code 3VA2163-7MS36-0AA0, which omits the UVR; the -0DA0 suffix adds the undervoltage release as a factory-integrated option.
Panel fit and mechanical constraints
Footprint is 105 mm wide × 181 mm tall × 86 mm deep — a standard 3-pole MCCB envelope that fits most DIN-rail or direct-mount panel layouts without surprise. Maximum power dissipation is 6.5 W at rated load, so thermal rise within a sealed enclosure is manageable; still, adjacent devices should be spaced per Siemens derating guidelines for ambient above 70 °C. Operating ambient range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C, covering most industrial and warehouse conditions.