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). 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. 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
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. Maximum power loss is 10.6 W, manageable for heat dissipation in a standard DIN-rail enclosure.