The Siemens 3VA2163-5HN36-0AF0 is a SENTRON 3VA molded case circuit breaker (MCCB) rated for line protection in distribution panels. It carries a continuous current of 63 A across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel layout in warm enclosures. Interrupting capacity is 187 kA at 240 VAC, dropping to 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA figure at 240 V means this breaker handles high-fault scenarios common on the secondary side of large step-down transformers — a key spec for industrial service-entrance or sub-feed applications where available fault current is high. Three-pole construction with a trip indicator on the front. No undervoltage release, no ground-fault monitoring, no communication module — this is a straightforward thermal-magnetic line-protection breaker. The auxiliary switch complement is one auxiliary switch plus one trip alarm switch (HQ type), enough to signal position and fault back to a PLC or annunciator.
Dimensions and panel fit
Footprint is 105 mm wide by 181 mm tall by 86 mm deep. That 105 mm width is three-pole standard for the 3VA frame — it occupies three 35 mm DIN spaces (or the equivalent bolted-foot mount). The 86 mm depth is shallow enough to clear a 120 mm deep enclosure back-panel without crowding the gland plate.
Compliance and documentation
Rated insulation voltage is 800 V. Storage temperature range is -40 °C to 80 °C; operating range is -25 °C to 70 °C. Maximum power loss is 4 W. The part carries the SENTRON brand designation and is designed for line protection per IEC/UL standards typical of the 3VA series.