What this MCCB carries
The Siemens SENTRON 3VA2163-7MS36-0CA0 is a 3-pole molded case circuit breaker rated for 63 A continuous at 40 °C through 70 °C — no derating needed across that band, which simplifies panel sizing in warm enclosures. Its interrupting capacity hits 330 kA at 240 V, 242 kA at 415 V, and still holds 187 kA at 500 V, dropping to 3.7 kA at 690 V. That 330 kA figure at 240 V tells you this breaker is built for high-fault utility or transformer-fed service entrances where available short-circuit current is extreme.
Undervoltage release and protection design
This variant ships with an undervoltage release (UVR) fitted — the auxiliary release is listed as undervoltage release. That means the breaker trips automatically when supply voltage drops below a threshold, protecting downstream loads from brownout conditions or preventing automatic reclosure after a dip. The design is starter protection, so it's intended for motor branch circuits where loss-of-voltage protection is part of the safety sequence. No auxiliary switch, no ground-fault monitoring, no communication function on this order code.
Panel fit and environmental limits
Footprint is 105 mm wide, 181 mm tall, 86 mm deep — standard SENTRON 3VA frame size for this rating. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. Maximum power loss is 6.5 W, manageable in a typical IP54 steel enclosure without forced ventilation. No trip indicator, no voltage trigger, no phase failure detection on this variant.