What this MCCB carries and where it fits
The Siemens SENTRON 3VA1132-4ED32-0AA0 is a 3-pole molded case circuit breaker rated for line protection, carrying 32 A continuously at 40 °C ambient (derated to 30 A at 70 °C). The TM210 thermal-magnetic trip unit handles overload and short-circuit response without external power — no undervoltage release, no communication module, no ground-fault monitoring on this variant. Breaking capacity is the headline: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 121 kA figure at 240 V means it can interrupt a massive fault on a low-voltage distribution bus without rupturing — critical for high-fault-capacity panels common in industrial switchgear downstream of large transformers. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm tall — a compact footprint for a 32 A MCCB with this interrupting rating. The IP40 front protection means it's suitable for dry indoor panel mounting; not rated for washdown environments.
Thermal performance and panel integration
The 32 A rating holds flat from 40 °C through 50 °C — no derating needed in a typical 40 °C panel. At 55 °C it drops to 31 A, and at 70 °C to 30 A. If your enclosure runs hot near the upper limit, factor in that 2 A reduction; the breaker won't nuisance-trip but the connected load must stay under the derated value. Rated insulation voltage is 800 V, so the breaker is electrically rated for 690 V systems with margin. Storage temperature range is -40 °C to 80 °C — handles warehouse extremes without issue. Maximum power loss is 10.6 W, manageable for heat dissipation in a standard DIN-rail enclosure.