Kb Electronics 28139 Speed Control DC Drive, KBWM Series, SCR, Variable TYPE, Input: 115 VAC, 50/60 HZ, Output: Armature Voltage: 0 - 90 VDC, Load Current: 5 AMP AC, 3.5 AMP DC, Enclosure: NEMA-1 Metal, Ambient Temperature: 0 - 50 DEG C, Size: 1/3 HP, Dimensions: 3.7 IN Length X 3 IN Width X 6.8 IN Height, Speed Range (Ratio): 50:1, C/US UL Listed, CE Certified Standard, For Permanent Magnet (PM), Shunt Wound Motors And Magnetic Particle Clutches Application