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Magnetic properties and the magnetocaloric effect (MCE) of the RSi (R =Ce,Pr,Nd) compounds made of Misch metal (MM) are investigated.Two transitions are found at 12 K and 38 K.Field variation generated large MCE and two peaks are found in the magnetic entropy change (△S) curves,which correspond to the two transition temperatures.The maximum values of the magnetic entropy changes (△S) are found to be-5.1 J/(kg.K) and -9.3 J/(kg.K) for the field ranges of 0-2 T and 0-5 T,respectively.The large △S as well as ultra-low price of MM make (MM)Si a competitive magnetic refrigerant candidate for low temperature in Eriksson cycle.