Review on Siemens 5SJ41307HG42 Miniature Tripping Characteristic by Jesse Spoja

Seems to work acceptably well. It has heated up to 30 amps for 2 hours in an ambient temperature of around 30C. I didn't measure accurately, but the lack of bubbles suggests the temperature must have been less than 70°C. The wires and connectors on either side only felt warm, but the center of the switch was quite hot.