The 3VA1132-4ED42-0AA0-ZD00 is a 4-pole MCCB on the IEC 160 A frame, but with a fixed 32 A thermal-magnetic trip — meaning the frame is oversized for the trip rating, which gives you headroom for higher short-circuit withstand without upsizing the enclosure. For selectivity studies, that number governs the upstream device coordination — you need a feeder breaker or fuse with a higher let-through to clear before this one trips on a downstream fault. The TM210 overload curve and fixed short-circuit pickup at 10 x In (320 A magnetic) make this a line-protection breaker, not a motor-protection device. It's sized for cable and busbar protection in a distribution panel, not for starting duty on a motor branch circuit.
The 4-pole footprint on a 160 A frame is wider than a 3-pole equivalent — plan for roughly 140 mm of DIN rail width per breaker. The nut keeper kit adds a captive nut for the line-side busbar connection, which saves time during panel build if you're landing copper busbars on the line terminals.