It carries a 52.5 kA interrupting capacity at 240 V AC, dropping to 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 690 V — so it handles serious fault energy across common industrial voltages without cascading upstream.
The 25 A rating holds steady from 40 °C up to 50 °C, then derates gently to 22.5 A at 70 °C. That means you get full ampacity in most ventilated enclosures without over-speccing the frame size. The TM210 overcurrent release combines a thermal bimetal for overload protection and a magnetic coil for short-circuit trip — no electronics to fail, no auxiliary power needed. The interrupting ratings at different line voltages tell you exactly where it coordinates: 52.5 kA at 240 V for secondary distribution, 32 kA at 415 V for common European industrial supplies, and 7.5 kA at 690 V where fault currents are lower but available energy is still a concern.
The 76.2 mm width (three 25.4 mm pole pitches) and 70 mm depth fit standard SENTRON mounting feet and busbar systems.