4.812" overall length elec ratings, ac, 115v max rated voltage, 4 amp res curr rating at max rated voltage, dc, 28v max rated voltage, 4 amp res curr rating at max rated voltage; motor 115v, 400 hz; 2 terminals for motor/3 for contacts; rated actuation time, 9 sec operating time, 0.5 sec release time; hermetically sealed; three 9/16 in. lg studs on an acute triangle w/1.875 in. base