The 3VM1132-4EE36-0AA2 is a Siemens SENTRON IEC molded case circuit breaker, 3-pole, rated 32 A continuous at 40 °C through 50 °C. The headline numbers are the interrupting ratings: 121 kA at 240 V AC, 76 kA at 415 V AC, 53 kA at 440 V AC, and 11.9 kA at 500 V AC. The 76 kA at 415 V is the figure most European industrial panels will care about; the 121 kA at 240 V matters for North American 240/120 V services or large UPS output breakers.
TM220 release — what LI means in practice
The overcurrent release is a TM220, thermal-magnetic type, with LI protective function — that's long-time (thermal) and instantaneous (magnetic) protection. No electronic trip unit, no ground-fault module, no communication. The thermal element is adjustable: overload protection Ir from 22 A to 32 A, matching the 32 A frame rating. The instantaneous pickup Ii is fixed at 10 x In, so 320 A magnetic trip. That's a standard motor-start or distribution feeder curve — the thermal handles overloads, the magnetic clears hard shorts. The switching capacity class is S, meaning the frame is rated for the higher interrupting levels listed above, not the economy class.
Front-connected box terminals on the main circuit — standard for panelboard or distribution board mounting. The frame size is rated up to 160 A max, so this 32 A unit has plenty of mechanical clearance inside the case for heat dissipation.
