What this MCCB carries and where it fits
The Siemens 3VA1132-5EE32-0AA0-ZD00 is a 3-pole IEC frame 160 molded-case circuit breaker with breaking capacity class M — meaning it interrupts 55 kA at 415 V without external fuses upstream. That 55 kA SCCR at 415 V is the headline: it tells you this breaker can clear a bolted fault up to that level in a 415 V three-phase system, which is the typical distribution voltage in European and Asian industrial plants. The thermal-magnetic TM220 trip unit gives adjustable overload protection from 22 A to 32 A and a fixed short-circuit pickup at 10 x In (320 A). The nut keeper kit and the "DC Power OEM in China" note in the description suggest this variant was configured for an OEM panel builder — the nut keeper prevents hardware loss during transport; the OEM tag means the part may carry a special label or packaging for a specific equipment manufacturer.
Trip unit and coordination
The TM220 thermal-magnetic trip provides adjustable overload (Ir = 22 A to 32 A) via a rotary dial on the front, and a fixed magnetic short-circuit pickup at Ii = 10 x In (320 A). That fixed magnetic pickup is the key selectivity constraint: downstream breakers with instantaneous trips below 320 A will coordinate, but a fault above 320 A trips this breaker instantly, so verify the let-through curve of the downstream device if you need full selectivity. The 55 kA Icu at 415 V means the breaker can interrupt a fault at that level once and still be functional afterward (Ics is typically 50% or 75% of Icu for this class — check the specific datasheet for the service rating).
Panel and enclosure fit
The 3VA1 frame 160 is a standard IEC molded-case breaker sized for DIN-rail or screw-mount installation inside a distribution panel. The nut keeper kit is a small plastic retainer that holds the mounting nuts captive — it saves time during panel assembly and prevents dropped hardware inside live enclosures. The breaker occupies three pole widths on the rail; plan for adequate finger-duct clearance at the line and load sides for the 55 kA fault current.