Its TM210 thermal-magnetic release provides LI protection — thermal overload (L) and instantaneous short-circuit (I) — with a fixed short-circuit pickup of 630 A. The interrupting capacity hits 121 kA at 240 VAC, dropping to 9 kA at 415 VAC; that 121 kA figure means it can safely clear a fault on a high-capacity transformer secondary without upstream fuses needing to coordinate. Thermal derating is published: 63 A continuous through 50 °C, then steps down to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. Mechanical footprint: 25.4 mm wide (1 inch), 130 mm tall, 70 mm deep. That single-pole width matches standard DIN-rail spacing, so it slots into a panel without needing extra rail real estate.
Maximum power loss is 5.77 W at rated load — negligible for panel thermal budgeting, but worth noting if the breaker is tightly ganged in a sealed enclosure.
DC rating and application notes
Maximum rated operational voltage for DC circuits is 125 V. If the breaker is used in a DC bus or battery string, that sets the ceiling — no series-strapping for higher voltage is implied by the single-pole construction.