That flat thermal curve simplifies panel design: you size the bus and lugs for 63 A and don't recalculate for elevated enclosure temperatures. The 3-pole unit carries an ETU560 electronic trip unit, which gives you adjustable long-time (tr 0.5–25 s) and short-time delay settings, plus a communication function for integration into a monitored distribution system. At 240 V it interrupts 187 kA — a figure that covers virtually any low-voltage fault on a typical 480Y/277 V secondary. At 415 V and 440 V it still holds 121 kA, dropping to 76 kA at 500 V and 3 kA at 690 V.
Panel integration — dimensions and mounting
The 3VA2063-5JQ36-0AA0 measures 105 mm wide, 181 mm high, and 86 mm deep — a 3-pole frame that fits standard MCCB mounting patterns in distribution panels and motor control centers. Front-face protection is IP40, meaning tools or fingers won't contact live parts from the front, but the enclosure itself must provide the overall panel IP rating.
Trip unit and adjustability
The ETU560 electronic trip unit provides adjustable long-time delay (tr 0.5–25 s) and a communication function.