The Siemens SENTRON 3VA1163-5EE32-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated 63 A at 40 °C, with a TM220 thermal-magnetic overcurrent release and an integrated shunt trip (STL) for remote tripping. It carries a 187 kA interrupting rating at 240 V — that's the short-circuit current it can safely clear without welding contacts or rupturing the case, sized for high-fault panelboards and main feeders.
Breaking capacity and thermal derating
The interrupting performance scales with system voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. That 187 kA figure at 240 V is the one to check for high-fault service-entrance applications; the 17 kA at 690 V still covers most industrial motor branch circuits. Rated insulation voltage is 800 V. Thermal current holds at 63 A from 40 °C through 50 °C, then derates to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. If the panel ambient runs above 50 °C, apply that derating curve to the load — the breaker won't nuisance-trip on a warm day, but it also won't carry full nameplate current at 70 °C.
Shunt trip and release design
The auxiliary release is a shunt trip (STL) — a voltage-triggered coil that mechanically unlatches the breaker on command from an emergency-stop button, safety relay, or remote control system. It is not an undervoltage release (this unit has none), so it requires an active signal to trip; loss of control power leaves the breaker closed. The overcurrent release is the TM220 thermal-magnetic type, designed for line protection — fixed thermal and magnetic settings, no electronic adjustment.
Physical footprint
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep. The 76.2 mm width (3 inches) is standard for a 3-pole MCCB in this frame size — it occupies three 25 mm module positions on a DIN rail or panel-mount baseplate. No trip indicator is fitted on this variant.