Breaking capacity drops to 121 kA at 500 V and 3.7 kA at 690 V — the steep fall at 690 V means this breaker is not the right choice for a 690 V feeder unless the fault current is tightly limited. At 415 V, 187 kA gives you headroom for most industrial service-entrance or sub-distribution boards.
That's enough auxiliary contacts to signal the PLC and a remote alarm without adding a separate interface relay. The basic switch core is order code 3VA21166HN320AA0.
Footprint is 105 mm wide by 181 mm tall by 86 mm deep — that's 4.13 in by 7.13 in by 3.39 in. Standard 3-pole MCCB form factor for a 160 A frame; it'll drop into a panel cutout sized for the SENTRON 3VA2 family without re-drilling the gland plate.
Environmental limits
Maximum power loss is 25.5 W — negligible for panel thermal budgeting at this frame size.