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Obsolete Drum Switches

The drum controller was an integral part of industrial manufacturing in the past. Motor starting and control has evolved tremendously over the years in the industrial environment and the drum controller, in most cases, has become a thing of the past. The drum controller was an inefficient means of motor strating and control. It suffered from continual mechanical wear and arcing of the contacts.

However, obsolete drum switches open up a new page in the book of down-time. Since failure of these units usually amounts to an upgrade, being able to replace wearable contact parts on the fly can at the very least, reduce down-toime as an upgrade is planned and budgeted.

Drum Switch Troubleshooting Tips | Search eBay for Used Drum Switch | Drum Switch in our Forum


Drum Switch Troubleshooting

For the most parts, human discretion and the human touch was responasible for the speed at which the motor was to be accelerated. When they operate properly, they provided us with a controlled motor starting. When they failed, they could leave us helpless in a costly situation on the shop floor. Some factories still use the drum controller on machinery that is old but still functional, in production but not worthy of upgrading.

Fortunately, drum controller problems can be fairly simple to diagnose, sometimes the bigger issue is finding replacement parts for drum controllers in an environment where ever-changing technology and design can phase out, or completely eliminate this type of technology from the available parts catalog annually. Drum controller contacts, the copper or silver alloy coated conductors, seem to be the most commonly failed parts due to arcing and mechanical wear.

For ease of use, accessibility, and available industrial Drum Switches, we've been referring individuals to eBay. It almost seems too easy but we've found many parts available that we thought we'd never find. Even after checking with larger parts houses, we still come back and check here regularly. It is not unusual to find obsolete Allen Bradly Drum Switches, Westinghouse Drum Switches, Square D Drum Switches, or obsolete GE Drum Switches listed daily.

These parts are those that were posted as a result of hard times at other companies and in many cases are NOS (new old stock).


obsolete Drum SwitchesMachine downtime due to an obsolete drum switch is a reality for many. There are options, however, nothing is ever easy. Here is a systematic approach, a simple yet effective method in dealing with a failed component that has likely been phased out by the manufacturer and no longer readily available.

1. Identify your problem... Making a positive identification of the failed component is the crucial first step. Troubleshooting is not a synonym for guess-work. It is a scientific method of determining a problem. There should be no doubt as to the source of the problem. This is determined through testing and not guessing.

2. Check the shelf... That's right, all too many times has a spare component or unit been passed over and found a day late. It sounds simple, but it is always the next step. Don't go looking for something that doesn't need to be found.

3. Check with the manufacturer... A website visit, email, or quick phone call to inquire about a a drop-in replacement is common sense. This step will deliver the bad news if obsolescence is indeed the case.

4. Check eBay... Believe it or not, this has become somewhat of a flea market for old industrial parts. By many, it is still considered to be a website for collectibles and the like, but a quick search can actually reveal a different side to the 'bay. Many private sellers post industrial components as a buy it now type listing, therefore bypassing the auction format all together.

Take a moment and browse the eBay listings since they are always changing...

5. No positive results? explore other options... If your particular drum switch is ultimately deemed obsolete and unavailable, you'll need to take the next path of least resistance. This may be upgrade or update your equipment with newer components. The good news is that your machinery or industrial equipment will most likely not need complete re-engineering or a top-to-bottom overhaul to accomodate new components. Adjustments to your system are possible when there is no other choice.


Search for Used Drum Switch

search for used drum switches


Styles and Brands

  • Obsolete 3 Pole Drum Switches
  • Obsolete 480V Drum Switches
  • Obsolete ABB Drum Switches
  • Obsolete Allen Bradley Drum Switches
  • Obsolete DC Drum Switches
  • Obsolete Fuji Drum Switches
  • Obsolete GE Drum Switches
  • Obsolete PCB Drum Switches
  • Obsolete Power Drum Switches
  • Obsolete Seimens Drum Switches
  • Obsolete Solid State Drum Switches
  • Obsolete Square D Drum Switches
  • Obsolete Telemeqanique Drum Switches
  • Obsolete Westinghouse Drum Switches

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Search the Classifieds

We also offer free industrial classified ad system complete with a category designed for want ads. We strongly encourage those with individual parts for sale, specifically new or vintage drum switches, to list them at OI. Ad creation takes only a few minutes and is free of charge.

Those requiring an odd part or obsolete industrial component can place a want ad just as easily, again, with no charge or fee. The OI ad system is at your disposal. Place want ads here, list your individual parts here, or post a listing for your company here.


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