The Siemens SENTRON 3VA2163-6HL32-0CH0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel thermal budgeting in warm enclosures. Its interrupting capacity hits 242 kA at 240 V AC, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V — numbers that put it in the high-fault tier for industrial distribution, meaning it can clear a bolted fault on the secondary of a large transformer without upstream coordination headaches.
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a 3-pole frame that fits standard SENTRON panel footprints and leaves room alongside for the auxiliary switch block (2 auxiliary switches + 1 trip alarm switch HQ) that ships with this order code. The basic switch inside is order code 3VA21636HL320AA0; the UVR and auxiliary switches are factory-integrated, so no field-assembly of add-on modules is required for this variant. A visible trip indicator is present on the front face, giving a quick visual confirmation of a fault trip without needing to reset the handle to test.
Maximum power dissipation is 6.5 W at rated load — negligible for panel thermal calculations but worth noting if the breaker is packed tightly alongside heat-sensitive electronics.
What the 63 A flat derating curve means
Unlike many MCCBs that start derating above 40 °C, this 3VA2 frame holds 63 A all the way to 70 °C ambient. That means a panel designer can size the breaker for 63 A branch circuits without adding thermal headroom for a hot enclosure — a real advantage in non-air-conditioned switchrooms or outdoor cabinets.