Detailed Product Description Power Feed-Special electrical relay protects against damage caused by power failure -Electrical and mechanical are made for easy maintenance-Manual reset switchMODELR.P.MMAX.R.P.MMAX.TORQUEVOLTAGEAL-510S(X,Y,Z)4-160160650in-lb110V 50/60Hz AL-410S(X,Y,Z)0-200200550in-lb110V 50/60Hz AL-310S(X,Y,Z)0-180180450in-lb110V 50/60Hz