What this 3VA2063-5JQ32-0DA0 is
Siemens SENTRON 3VA2063-5JQ32-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current. It's the line protection version — meaning it's set up for feeder or main breaker duty, not motor circuit protection. Breaking capacity hits 187 kA at 240 V AC and 121 kA at 415 V, so it can handle high-fault industrial panels where the available short-circuit current is serious. The ETU560 electronic trip unit gives adjustable overload and short-circuit protection curves, plus a communication function for remote monitoring or integration into a plant control system.
Ratings and what they mean for fit
63 A continuous at 40 °C is the baseline — but this breaker doesn't derate much until above 55 °C, where it steps down to 60.6 A at 55 °C and 53.6 A at 70 °C. That thermal stability matters in a sealed enclosure or a panel near a heat source. The 187 kA at 240 V and 121 kA at 415 V tell you the SCCR on the feeder side needs to be at least that high; this breaker won't be the weak link in a high-fault installation. At 690 V it still holds 3.4 kA, which covers most 690 V distribution.
Panel fit and integration
Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. That's a standard MCCB footprint — it'll drop into most 3VA-series panel cutouts or DIN-rail mounting adapters. The 105 mm width means it takes up three pole spaces in a typical distribution panel. Spring-cage terminals accept 0.2–2.5 mm² conductors. The undervoltage release (UVR) is built in, so no separate add-on module to wire. Communication function is on board — check the ETU560 manual for the protocol (likely PROFIBUS or PROFINET via a communication module).