What this MCCB carries and where it fits
The Siemens 3VA2063-5JQ32-0DC0 is a 3-pole SENTRON molded case circuit breaker rated for 63 A continuous current (Iu) with an ETU560 electronic trip unit. It is configured for line protection — meaning it sits at the feeder or main distribution point in a panel, not downstream on a motor branch. The interrupting ratings are the headline: 187 kA at 240 V, 121 kA at 415 V and at 440 V, 79 kA at 500 V, and 3.4 kA at 690 V. That 187 kA at 240 V tells you this breaker is sized for high-fault locations — think transformer secondaries or large bus risers where available fault current is well above 100 kA. The 63 A frame holds that rating steady from 40 °C up to 50 °C; above that it derates to 60.6375 A at 55 °C and down to 53.55 A at 70 °C. If your panel ambient runs hot, the continuous current you can actually pull is lower than the nameplate.
Trip unit and auxiliary hardware
The ETU560 overcurrent release is an electronic trip unit with adjustable long-time, short-time, instantaneous, and ground-fault protection. Ground fault monitoring uses summation current formation on the L-conductor — it sums the phase currents to detect imbalance. The breaker ships with an undervoltage release (UVR) fitted, part number 3VA9608-0BB25 for the auxiliary trip. Two HQ auxiliary switches are integrated for status feedback to a PLC or SCADA. There is no phase failure detection and no voltage trigger on this variant. Communication function is present — the ETU560 supports optional communication modules for remote monitoring, though the base breaker does not include a module in the order code. Power loss at rated load is 7.9 W maximum.
Physical fit and environment
Dimensions are 105 mm wide, 181 mm high, 86 mm deep. That 105 mm width is the standard 3-pole MCCB footprint for the SENTRON 3VA2 frame — it fits the same mounting base and busbar system as other 3VA2 breakers. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The breaker is designed for panel mounting, typically on a mounting plate with busbar connections. No trip indicator is fitted on this variant — you will need to check the ETU560 display or auxiliary contacts for status.