MCCB with 63 A frame and high interrupting capacity
The Siemens SENTRON 3VA1163-5ED32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C, with a TM210 thermal-magnetic release. Its interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — per the datasheet, these are the short-circuit current ratings the breaker can safely interrupt at each voltage level, which governs selectivity coordination in a distribution panel. The rated insulation voltage is 800 V. Intended for line protection in industrial power distribution, this MCCB mounts on a DIN rail or panel base inside an enclosure.
Thermal derating and ambient temperature
The 63 A rating holds from 40 °C through 50 °C without derating. At 55 °C the continuous current drops to 60.48 A, then 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C. For a panel builder sizing this MCCB into a sealed enclosure with internal temperature rise, the 55 °C derating point is the first threshold where the breaker's continuous capacity falls below the nominal 63 A — plan the thermal budget accordingly if the ambient inside the panel exceeds 50 °C.
Undervoltage release and auxiliary options
This variant includes an undervoltage release (UVR) as the auxiliary release, designed per the 3VA9608-0BB11 integrated auxiliary trip. There is no auxiliary contact version, no communication function, no phase failure detection, and no ground fault monitoring. The trip indicator is absent. For an MRO planner or panel builder, the UVR means the breaker will trip if control voltage drops below the release threshold — useful for emergency stop circuits or undervoltage protection on motor feeders, but it adds a wiring point that must be verified during commissioning.