Four poles, 25 A continuous, with a TM220 thermal-magnetic release that handles both overload (thermal) and instantaneous fault (magnetic) trips. The 187 kA breaking capacity at 240 V is the headline number, but what matters for panel coordination is the full voltage curve: 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V.
At 55 °C it drops to 24 A, at 65 °C to 23 A, and holds 23 A through 70 °C. If your panel runs hot (stacked breakers, poor airflow), factor that 2 A loss above 50 °C. The TM220 release is fixed-trip, not adjustable, so the thermal curve is set at the factory.
Dimensions: 101.6 mm wide (4 in), 130 mm tall (5.12 in), 70 mm deep (2.76 in). IP40 on the front face. The 4-pole format switches three phases and neutral.
Power loss and auxiliary considerations
Maximum power dissipation is 8.5 W at rated load. Insulation voltage rated 800 V.