The Siemens SENTRON 3VA2063-6KP42-0AA0 is a 4-pole molded case circuit breaker rated for 63 A continuous current, built around the ETU850 electronic trip unit. It's designed for line protection in industrial distribution panels where you need adjustable trip curves and communication capability. Breaking capacity is the headline here: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V. That 242 kA at 240 V means it can handle high-fault scenarios typical in large industrial switchboards without needing upstream fuses to assist — it clears the fault itself. The ETU850 trip unit gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves. Communication function is built in, so it can talk to a higher-level control system for monitoring and remote trip — useful for coordinated power management in a plant. Rated insulation voltage is 800 V, and the front face carries IP40 protection — enough for a clean indoor panel, but not for washdown areas. Operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C. Power loss at full load is 5.4 W maximum.
Panel fit and dimensions
Physical footprint: 181 mm tall, 140 mm wide, 86 mm deep. That's a 4-pole MCCB in a standard SENTRON 3VA frame size — it mounts on a DIN rail or can be screw-mounted in a panel. The 86 mm depth is the body depth; account for handle throw and wiring space when laying out the enclosure. Termination is for copper or aluminum conductors up to the rated ampacity. No undervoltage release or shunt trip is included as standard — those are optional accessories if you need remote tripping beyond the communication function.