It carries a 32 A continuous rating that holds flat from 40 °C through 50 °C, then derates only 1 A per 5 °C step to 30 A at 70 °C — so it keeps its full nameplate current in a warm enclosure without oversizing the frame.
Breaking capacity — what the voltage columns mean
This breaker's interrupting rating changes sharply with system voltage: 187 kA at 240 V, 121 kA at 415 V, 76 kA at 440 V, and 17 kA at 500 V. At 415 V the 121 kA covers heavy industrial feeders with high fault current. The 510 A maximum frame rating means the breaker body itself is rated for that ultimate interrupting current; the 32 A trip unit limits the continuous load.
This part carries a current production lifecycle status — it is still an active catalog number within the SENTRON 3VM line, not a phase-out or last-time-buy item. That means it can be specified into a BOM without worrying about a short production window. No official successor exists because none is needed — this is the current design.
The 3VM1132-5MH32-0AA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a compact 3-pole footprint for standard panel-mount cutouts.
What the TM120M release means in practice
The TM120M designation tells you this is a thermal-magnetic release with a fixed magnetic trip threshold at 120 A (approximately 3.75x the 32 A continuous rating). That magnetic pickup is high enough to avoid nuisance tripping on motor inrush or transformer energization, but low enough to clear a bolted fault fast.