MCCB with ETU550 — 63 A, 187 kA at 240 V
The Siemens 3VA2163-5JP32-0HL0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, 3-pole, with a continuous current Iu of 63 A at 40 °C through 50 °C, derating to 53.55 A at 70 °C. Breaking capacity hits 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V — the 240 V figure covers most North American line-to-neutral faults; the 415 V rating handles European 400 V distribution without coordination headaches. The ETU550 electronic trip unit provides adjustable overload and short-circuit protection with communication capability (Communication Function Yes), plus a shunt trip (STL) for remote opening and an auxiliary contact set: 2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ.
Integration and panel fit
Dimensions: 181 mm height, 105 mm width, 86 mm depth — fits standard SENTRON 3VA panel cutouts and busbar systems. Rated insulation voltage Ui is 800 V; power loss is 4 W maximum. Operating temperature range -25 °C to 70 °C; storage -40 °C to 80 °C. Trip indicator and voltage trigger are present; undervoltage release and phase failure detection are not. Mechanical endurance is 20 000 cycles — suitable for frequent switching in industrial panel applications.