It carries a continuous current rating of 100 A, which it can sustain up to 50 °C without derating; above that, the allowable current steps down to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C, so the ambient temperature inside the enclosure directly governs the load it can protect.
Breaking capacity — what the voltage-specific ratings mean for fault coordination
The interrupting capacity varies sharply with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. For a 480 V panel (common in North American industrial distribution), the 32 kA at 440 V is the nearest published point — expect the actual SCCR at 480 V to fall between the 440 V and 500 V figures.
Dimensions are 130 mm high, 101.6 mm wide, and 70 mm deep — a 4-inch wide footprint that occupies one standard MCCB slot in a SENTRON panelboard or distribution block.
Thermal-magnetic release characteristics
The TM240 designation means the thermal-magnetic trip unit is fixed at 100 A — not adjustable.