The Siemens SENTRON 3VA2063-5HL36-0AF0 is a 3-pole molded case circuit breaker rated for 63 A continuous current, sized for line-protection duty in distribution panels. Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415/440 V, and 75.6 kA at 500 V — figures that cover most industrial service-entrance and feeder applications without needing a current-limiting upstream device. The 63 A rating holds flat across the full operating temperature range from 40 °C to 70 °C, so no derating curve to track when the panel runs warm. Footprint is 105 mm wide by 181 mm tall by 86 mm deep — a standard 3-pole MCCB envelope that fits existing SENTRON panel cutouts and busbar layouts.
What the Ratings Mean for Fit
The 187 kA interrupting rating at 240 V is the headline number — it tells you this breaker can clear a bolted fault at that level without rupturing, which is the figure that governs SCCR compliance for the downstream panel. At 690 V the rating drops to 3 kA, so it's not a 690 V main breaker unless the available fault current is known to be low. Rated insulation voltage is 800 V, so the internal clearances and creepage are sized for 690 V phase-to-phase systems with margin. The auxiliary switch configuration is 1 auxiliary switch plus 1 trip alarm switch (HQ design) — enough for a remote status and a separate trip-indication signal without an add-on module.
Integration Notes
Mounts in a standard SENTRON panel or enclosure on the DIN-rail or bolted busbar system. The 86 mm depth leaves clearance behind the door for wiring and accessory pigtails. No undervoltage release, no ground-fault monitoring, no communication function — this is a straight line-protection breaker. If you need shunt trip or comms, you're looking at a different variant in the 3VA2 family.