What this MCCB carries — and where it fits
The Siemens SENTRON 3VA2063-5HN36-0AE0 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. That makes it a straight drop-in for a 63 A bus or feeder tap that sees elevated panel temperatures. Breaking capacity is the headline: 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3 kA at 690 V. At 415 V that's well into high-fault territory — suitable for secondary distribution where transformer impedance is low or fault current runs north of 100 kA. It's configured for line protection (no ground-fault monitoring, no undervoltage release, no communication function). The basic switch ships as 3VA20635HN360AA0 with four HQ auxiliary switches — enough for status feedback to a PLC or remote I/O without an add-on module.
Panel fit and footprint
Dimensions: 105 mm wide, 181 mm tall, 86 mm deep.