It carries a continuous current of 1000 A at 40 °C, derating to 900 A at 70 °C, so the thermal curve governs real-world loading in a warm enclosure — the 1000 A headline holds only up to 50 °C ambient. The TM240 thermal-magnetic release provides fixed overload and short-circuit protection.
Dimensions are 320 mm high × 210 mm wide × 120 mm deep. The 210 mm width is the critical panel cutout dimension — verify the mounting base or rear-connection kit accepts this footprint before committing the gland plate. Maximum power loss is 332.5 W at rated current. That heat must be vented; plan for forced convection or derating if the breaker shares a compartment with other high-draw devices.