What this MCCB delivers for the panel
The Siemens SENTRON 3VA1063-4ED32-0AE0 is a 3-pole molded case circuit breaker rated for 63 A continuous current at 40 °C ambient, with a TM210 thermal-magnetic release that handles line protection duty. Its interrupting capacity hits 121 kA at 240 V and 75.6 kA at 415 V — enough headroom for high-fault industrial panels where you need selectivity without cascading upstream. The 4 auxiliary switches HQ give you status feedback to a PLC or annunciator without adding a separate contactor block.
Thermal derating and real-world current
At 40 °C the breaker holds its full 63 A rating, and it stays flat through 50 °C. Above that, it begins to taper: 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C. If your panel ambient runs hot — say a sealed enclosure near a furnace line — factor that 6 A drop between 50 °C and 70 °C into your load calculation. The 70 mm depth and 76.2 mm width fit standard SENTRON mounting footprints; the IP40 front face keeps dust out of the mechanism in a clean panel environment.
Coordination and release options
The TM210 release is fixed thermal-magnetic — no electronic adjustability, no ground-fault monitoring, no undervoltage release, and no communication module. It's a straight line-protection breaker for feeders or branch circuits where you don't need remote tripping or metering. The 4 auxiliary switches HQ are built in, so you get four sets of Form C contacts for status indication without an add-on accessory. Latching endurance is rated at 15,000 operations — a solid number for a panel that sees regular switching, though not for a motor-starting duty cycle.