Master Controllers/Cam Controllers Are Of Cam Type Wherein Contacts Are Actuated By Individual Cams Mounted On Operating Shaft. These Controllers Are Used For Remote Operation Of Contractor Equipment Controlling Heavy Duty E.o.t. Cranes & Rolling Mills Drives, On Power & Control Circuit Up to 500 Volts A.c., 50 Cycles At 40 Amps Continuous Current And 2.5 Amps At 220 Volts D.c. When Handling Inductive Loads. The Maximum Frequency Of Operation Is 1000 Switching Per Hour For Master Controllers And 720 Switching Per Hour When Used As Cam Controllers.
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