What this MCCB delivers
The Siemens SENTRON 3VA1163-5EE32-0AF0 is a 3-pole molded case circuit breaker rated for 63 A continuous current (Iu) with a TM220 thermal-magnetic overcurrent release. It carries a 187 kA breaking capacity at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — figures that tell you it can interrupt severe fault currents on the line side of a distribution panel without upstream coordination issues. Rated insulation voltage Ui is 800 V, and the breaker holds its full 63 A rating up to 50 °C ambient; above that it derates gradually to 56.7 A at 70 °C. The 15 000-cycle latching endurance is typical for a panelboard main or feeder breaker — not a daily-switch duty cycle.
Fit and panel integration
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard SENTRON 3VA frame that mounts on a DIN rail or screws into a panel backplate. The IP40 front rating means it's protected against solid objects over 1 mm but not sealed against moisture; keep it inside a cabinet, not in a washdown zone. Comes fitted with 1 auxiliary switch and 1 trip alarm switch (HQ version) — that gives you a dry contact for remote status and a separate contact that changes state only on a trip event, useful for PLC-based fault annunciation. No undervoltage release, no shunt trip, no communication module on this variant.