The SENTRON 3VA2163-5KP32-0HL0 is a 3-pole molded case circuit breaker rated for line protection at 63 A continuous current. Its interrupting capacity hits 187 kA at 240 V and still delivers 121 kA at 415 V — headroom that keeps selectivity intact downstream of a large transformer or generator. The ETU850 electronic trip unit gives you adjustable long-time, short-time, and instantaneous curves plus ground-fault alarm capability through the integrated communication and measurement functions.
Interrupting capacity and coordination
At 415 V the 121 kA breaking capacity means this breaker can sit on the main feeder of a large industrial panel without needing a current-limiting upstream device. The 79 kA at 500 V and 4.25 kA at 690 V cover the voltage bands common in 690 V mining or marine distribution. The 20 000 latching-endurance cycles support frequent switching in process lines.
Thermal derating and enclosure fit
Rated 63 A from 40 °C to 50 °C without derating. At 55 °C it holds 60.6 A, at 60 °C 58.3 A, at 65 °C 55.9 A, and at 70 °C 53.6 A — usable in a hot panel if you size the load accordingly. Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. That width matches the standard 3-pole MCCB footprint on most DIN-rail adapter plates. The max power loss of 4 W at rated current keeps internal cabinet temperature rise manageable.
Auxiliary and trip accessories
Factory-fitted with 2 auxiliary switches plus 1 trip alarm and 1 electrical alarm switch (HQ type), and a shunt trip (STL) for remote tripping. The undervoltage release is absent on this variant — if you need UVR, that is a different order code. The basic switch is order code 3VA2163-5KP32-0AA0 and the integrated auxiliary trip is 3VA9688-0BL30, both replaceable in the field.