Siemens SENTRON 3VA1063-2ED36-0HC0 — 63 A MCCB with shunt trip
The Siemens SENTRON 3VA1063-2ED36-0HC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 63 A up to 50 °C and derating to 56.7 A at 70 °C. Breaking capacity runs 52.5 kA at 240 V, 32 kA at 415 V, and 7.5 kA at 690 V — figures that govern the available fault current the breaker can safely interrupt at the service voltage. The TM210 thermal-magnetic release handles overload and short-circuit protection; a factory-fitted shunt trip (STL) allows remote tripping via a control signal.
What the ratings mean for panel fit
The 63 A frame holds its full rating through 50 °C ambient — above that the thermal derating curve drops to 60.48 A at 55 °C and 56.7 A at 70 °C. If the breaker lives in a crowded enclosure that runs hot, the effective ampacity is the derated figure, not the nameplate. The 52.5 kA at 240 V and 32 kA at 415 V are the SCCR the breaker contributes to the panel label; a downstream fault exceeding those values risks the breaker failing to clear. The shunt trip (STL) is wired separately from the main circuit — it needs a control voltage to fire, and the breaker has no undervoltage release or ground-fault module on this variant.
Mounting and integration
The 3VA1063-2ED36-0HC0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a 3-pole frame that fits standard SENTRON mounting plates and busbar systems. The IP40 front protection means it is suited for enclosed panel mounting where no water jets or dust ingress are expected. Two auxiliary switches (HQ) are built in, providing status feedback to a PLC or indication circuit without an add-on module. The integrated shunt trip order code is 3VA9688-0BL30, which ships pre-installed.