The Siemens SENTRON 3VA2163-6HN32-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It's designed for line protection in distribution panels, with a 242 kA interrupting capacity at 240 V that drops to 187 kA at 415/440 V and 121 kA at 500 V; at 690 V it still clears 3.7 kA.
What's inside the can
That means you get two form-C auxiliary contacts for status feedback and a dedicated alarm contact that changes state only on a trip event — useful for annunciation without extra wiring. The basic switch is 3VA2163-6HN32-0AA0; this order code adds the accessories at the factory.
Power dissipation is 4 W maximum at rated load, so heat buildup in a dense panel is minimal. The 3VA2 frame is the compact version of the SENTRON line — saves panel space compared to the 3VA1 frame for the same 63 A rating.
