The Siemens 3VA1163-6EF32-0AC0 is a SENTRON 3VA1 molded case circuit breaker (MCCB) rated for line protection, carrying 63 A continuously at 40 °C with a thermal-magnetic TM240 overcurrent release. Its 220 kA interrupting capacity at 240 VAC means it can safely clear a fault up to that level without upstream damage — critical for high-fault panels where a standard MCCB would cascade. The 800 V rated insulation voltage (Ui) gives headroom for 480 V or 600 V systems without derating the insulation path.
Breaking capacity across voltages
Interrupting rating drops with system voltage: 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 500 V or 690 V. That 17 kA floor at 690 V is the number to check if your panel feeds a 690 V drive bus — it still handles most industrial fault levels, but verify against the transformer impedance and available fault current.
Thermal derating and power loss
The breaker holds full 63 A up to 50 °C ambient, then derates linearly to 58 A at 70 °C. Maximum power dissipation is 17.3 W — relevant for enclosure heat calculations if you're packing several breakers in a sealed cabinet. Operating range is -25 °C to 70 °C; storage range -40 °C to 80 °C.
Mounting and auxiliary contacts
Three-pole design, 76.2 mm wide (3 in) — fits standard 3-pole MCCB panel cutouts. Depth is 70 mm, height 130 mm. Ships with two auxiliary switches (HQ type) pre-installed for status feedback to a PLC or alarm circuit. No undervoltage release, no ground-fault monitoring, no communication module on this variant — those are add-on accessories if needed later.