What it is and what it does
The Siemens 3VA1163-4ED32-0AA0 is a SENTRON 3VA1 molded case circuit breaker (MCCB) designed for line protection in distribution panels and industrial switchgear. It carries a 63 A continuous rating at 40 °C and uses a TM210 thermal-magnetic trip unit — the thermal element handles overloads, the magnetic element clears short-circuits. Three poles suit three-phase systems up to 800 V rated insulation voltage. The breaking capacity is the key spec for fault coordination: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V. That means it can safely interrupt very high fault currents at common low-voltage levels — useful for installations with high available fault current, like near a transformer or in a main distribution board. The 63 A rating holds steady up to 50 °C and derates only slightly at higher ambients (62 A at 55 °C, 60 A at 65 °C, 58 A at 70 °C) (–), so it's stable in a warm enclosure.
Panel fit and integration
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep. It mounts on a DIN rail or directly to a backplate via screw terminals. Power loss at rated current is 17.3 W maximum — modest for a 63 A breaker, so thermal rise inside a crowded panel is manageable. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. No undervoltage release, no trip indicator, no communication function, and no ground-fault monitoring — this is a basic thermal-magnetic MCCB for straightforward overcurrent protection.