SENTRON 3VA2 MCCB with ETU860 — 63 A, 4-Pole, 330 kA IC
The Siemens 3VA2063-7KQ46-0AA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C through 70 °C, with no derating across that range — a flat thermal curve that simplifies panel schedules in warm enclosures. Four-pole construction with line-protection firmware (ETU860 electronic trip unit), carrying a 330 kA interrupting capacity at 240 V and 242 kA at 415 V — figures that place it in the high-fault tier for main or feeder breakers in industrial distribution. The ETU860 release supports adjustable N-conductor protection (OFF, 40 % to 160 % of the phase setting) and ground-fault monitoring via summation current formation on L + N — a combination that covers both overload and earth-leakage in a single device, eliminating a separate GFCI module. Communication function is onboard, enabling remote trip indication, load monitoring, and selective coordination from a PLC or BMS.
Integration — Panel Fit and Mounting
Dimensions are 181 mm height, 140 mm width, 86 mm depth — a standard 3VA2 frame size that bolts directly into the SENTRON mounting plate or a DIN-rail adapter kit. The IP40 front protection means it is suitable for enclosed panel mounting; no additional front cover sealing required for dry indoor environments. Power loss is 5.4 W maximum at rated current — low enough that ventilation in a typical IP54 enclosure is adequate; no forced-air cooling needed for a single unit. Operating temperature range is -40 °C to 70 °C; storage range extends to 80 °C maximum. The 20 000 latching endurance cycles cover frequent switching applications like capacitor-bank or motor-feeder duty.