The Siemens SENTRON 3VA1063-3ED42-0HC0 is a 4-pole molded case circuit breaker rated for 63 A continuous current at 40 °C, with a TM210 thermal-magnetic release providing both overload and short-circuit protection. The interrupting capacity is voltage-dependent: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V — the full range covers most low-voltage distribution and motor branch circuits. The 800 V rated insulation voltage gives headroom for 690 V line-to-line systems common in industrial and renewable-energy installations. This MCCB includes a shunt trip (STL) auxiliary release with integrated auxiliary switch (2 HQ contacts), allowing remote tripping from a PLC safety output or emergency-stop circuit. The shunt trip order code is 3VA9688-0BL30 — verify compatibility with your control voltage before panel integration. No undervoltage release, no ground-fault monitoring, and no communication module are fitted; this is a line-protection breaker for straightforward feeder or main-switch duty.
Thermal derating and panel integration
The 63 A rating holds up to 50 °C ambient; above that, derate linearly to 56.7 A at 70 °C. In a sealed enclosure with multiple breakers, the 60 °C figure (59.22 A) is the realistic planning number. The 70 mm depth, 101.6 mm width, and 130 mm height fit standard SENTRON mounting footprints — verify busbar and terminal access against existing panel layout. IP40 front protection is typical for indoor switchgear; no washdown rating.
Selectivity and coordination note
For selective coordination with downstream breakers, the TM210 release provides fixed thermal and magnetic trip thresholds. The interrupting capacity at 415 V (52.5 kA) covers most industrial service-entrance fault levels. In a 690 V wind-turbine or solar-string combiner application, the 7.5 kA interrupting rating must be verified against the available fault current — this breaker is not a universal 690 V solution.