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 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. 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.
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 integrated shunt trip order code is 3VA9688-0BL30, which ships pre-installed.