At 55 mm wide and 149 mm deep, it fits standard motor-starter footprints alongside contactors and overload relays in a panel.
The 3RV2032-4BA15 delivers 100 kA breaking capacity at 240 V, 50 kA at 400 V, and 5 kA at 690 V. Those numbers tell you it handles high available fault currents at common low-voltage distribution levels — no need for upstream current-limiting fuses in most 400 V panels. At 690 V the 5 kA rating is adequate for most IEC motor starters, but check coordination if the panel sits behind a transformer with higher through-fault capability.