What the interrupting ratings mean for panel coordination
Its TM240 thermal-magnetic release provides fixed overload and short-circuit protection up to 32 A continuous at 40 °C, with the thermal curve holding flat to 50 °C before a gentle derate — at 55 °C it carries 30.72 A, at 70 °C it carries 28.8 A. The interrupting ratings span 75.6 kA at 240 V down to 10.5 kA at 690 V, which means this breaker can be applied on the secondary of a 240 V transformer where fault current is high, or on a 690 V motor feeder provided the available fault stays under 10.5 kA.
Thermal derating — the real continuous current at your panel ambient
Above that, the TM240 release begins to pull back: 30.72 A at 55 °C, 30.08 A at 60 °C, 29.44 A at 65 °C, and 28.8 A at 70 °C. If your panel internal ambient runs at 60 °C — common in a tightly packed enclosure with drives — you have 30 A of headroom, not 32 A.
Auxiliary switching and alarm indication
The auxiliary signals the open/closed state of the breaker; the trip alarm switch changes state only when the breaker trips on fault. Both are wired to the panel terminal block for remote indication.
Physical fit — panel cutout and footprint
The 76.2 mm width (three 25.4 mm pole pitches) is the standard 3-pole MCCB footprint for this class — it fits the same DIN-rail or rear-mount panel cutout as other SENTRON 3VA frame sizes.