What the ratings mean for fit
The Siemens 3VA1132-6GD42-0AA0 is a 4-pole SENTRON molded case circuit breaker (MCCB) rated 32 A continuous at 40 °C, with a TM210 thermal-magnetic release — the 210 designator means the thermal pickup is fixed at 1.0× In and the magnetic short-circuit pickup is at 10× In (320 A). Breaking capacity is the headline: 220 kA at 240 V AC means it clears worst-case faults on high-available-current service entrances (typical of 480Y/277 V distribution transformers) without needing a current-limiting fuse upstream. At 415 V the rating drops to 154 kA, still well above most industrial panel SCCR requirements. The 4-pole construction (three phases plus neutral switched) makes this the unit for TN-S or TN-C-S systems where the neutral must be disconnected for isolation, common in data-center power distribution and multi-source transfer schemes.
Thermal derating and panel integration
Full 32 A rating holds up to 50 °C ambient; at 55 °C it derates to 31 A, at 65 °C to 30 A, and at the maximum 70 °C operating ambient it carries 30 A. That means in a tightly packed enclosure with elevated internal temperature you lose only 2 A — negligible for most 32 A feeders. The 70 mm depth × 101.6 mm width × 130 mm height footprint fits standard 4-pole MCCB cutouts; IP40 on the front face is sufficient for enclosed panel mounting (no washdown rating — keep it behind a gasketed door in wet environments). Maximum power loss is 10.6 W, so ventilation requirements are modest.
Lifecycle and sourcing posture
The lifecycle stage is marked current — this is an active-production Siemens SENTRON 3VA frame. No end-of-life notice or successor code is on record.