A chopper resistor (200, 200, 200, 200) having at least one load resistor (100, 110, 200, 100) is provided, wherein the load resistor (100, 110, 210, 100) is a resistance element (111, 111, 211) that is at least partially in one The heat sink (150,1150, 2150) is arranged made of metal, wherein the cooling body (150,1150,21) of metal, a resistance chamber (151,151,2151) and further at least one cooling channel (155) which is connected to a wall portion of Resistor chamber (151) adjacent and substantially parallel to the resistance chamber (151) extends, and / or cooling fins (1152, 2155) which extend substantially parallel to the resistance chamber (1151,2151), wherein the load resistances (100,1100,2100 ) are oriented such that, when the chopper resistor (200, 200, 200, 200) is disposed in its regular operating position, cooling channels (155) and / or cooling fins (1152, 215) are approximately vertical relative to the ground.
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