The TM210 thermal-magnetic release gives you fixed short-circuit pickup at 1000 A (10× In) and a thermal curve that holds full 100 A up to 50 °C, then derates to 91 A at 70 °C — useful when the breaker sits in a warm enclosure near other heat sources. Breaking capacity hits 121 kA at 240 V and 75.6 kA at 415 V, so it handles high-fault utility feeds without cascading upstream.
The breaker measures 70 mm deep, 50.8 mm wide (2 inches), and 130 mm tall. Two inches per pole means a 2-pole unit occupies roughly 4 inches of DIN-rail width — standard for the SENTRON 3VA family. Maximum power loss is 16.66 W, which contributes to the enclosure thermal budget.