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contactors

  1. Industrial Electrical Forum
    Had an interesting thing at work today. A 25 HP bucket had a contactor chattering. To me this has always been a pretty clear indicator that the contactor is done. Changed the bucket and had the exact same thing happen. I had my apprentice stand by the motor, it sounded awful and the gear box...
  2. General Electrical Discussion
    I have a NEMA 1 Size Cutler Hammer contactor with a control power transformer in the bucket. When placed in "hand", the contactor just buzzes but does not pull in to send voltage to the motor. Replaced the contactor and the control transformer, same symptoms. I have 125 on the transformer output...
  3. Electrician Swap
    Catalog number: CR353EGY4B New and unused, still sealed in General Electric packaging. These items are 208/240 volt, 75 amp, 3 pole contactors. Also called definite purpose contactors or motor starters. Please contact me with any questions. I have a few available - asking $80 each, I can email...
  4. General Electrical Discussion
    In our plant we r using 24V 5A AC1(Utilization category) relay to control main power contactor (coil voltage 110V, Pickup VA:105VA, sealedoff VA: 55VA). to check correct selection of the relay, i need to know how to determine the AC15 rating of the same. Is there any formula/method to determine...
  5. PLCs, VFDs, Motors and Controls
    I have been doing electrical work for some 20 years, I recently took a job with a large company and the have hundreds of motors and starters. I am lost needing help, i have checked you tube and such but only found bin 95.com. I was a residential/commercial electrician with very little motor...
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