Brake resistor for inverters ATV930U07N4 - U40N4, ATV950U07N4 - U40N4, ATV950U07N4E - U40N4E. Reference values for a heavy braking cycle (lifting applications). Power 1.7 kW, protection class IP20, resistance 100 Ω at 20 °C. Supply voltage 200-240 V or 380-480 V, 50/60 Hz. Load factor for resistors: The value of the average power that can be dissipated from the resistor into the housing at 50 °C. Determined for a load factor during braking that corresponds to the majority of common applications. High overload: 54 s of braking at a braking torque of 1 Tn and 6 s of braking at a braking torque of 1.65 Tn for a cycle of 120 s. Required quantity per inverter: 1.