Should I Use Fuses Or A Breaker On Variable Frequency Drives (VFDs)?

About This Video

This video answers a commonly asked question from callers. Many people wonder if they should use fuses or breakers on their variable frequency drive (VFD). There are some important factors to take into consideration, but overall we really only give one ideal recommendation.

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Lenze AC Tech SMVector NEMA 1 VFD Face Angled
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Warning: All electrical equipment should be handled by qualified electricians. Make sure to adhere to all local, national, and international safety laws when handling your equipment. Failure to do so could result in severe injury or even death.

The recommended fuses we usually recommend are fast blow fuses. That’s going to be your ideal protection. Obviously, a breaker is going to be a lot slower in reacting to an over-current situation. Standard fuses also can be a lot slower in reacting. The more time it takes for it to react, the more potential damage can be caused to the drive as a result of whatever the overcurrent is.

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Experience & Honesty Mean Everything...

When It Comes To AC Drive Repair Quotes,

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When It Comes To Equipment Repair Quotes, Experience & Honesty Mean Everything…

For over 35 years Precision Electric has specialized in the repair of Industrial Variable Frequency Drives, PLCs, Servo Motors, Servo Drives, Encoders, AC Motors, DC Motors, Eddy Current Clutches, Pumps, Fans and more.

We are an authorized repair facility for many name brand vendors and have repaired equipment across a wide array of industrial electronics vendors including Allen Bradley, Rockwell, ABB, Lenze, AC Tech, Eaton, Hitachi, Marathon, Baldor, Leeson and Yaskawa.

The above list of vendors really only names a few, and does not include many nameless and brandless products shipped from over seas.

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Just A Few Of The Vendors We Service, Integrate Or Repair

 
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Customer Testimonials

“We received the drive on Wednesday, and we installed it on Thursday morning. Started it and it has been running perfectly since. No issues. Thank You Again for Great Customer Service!”

“Extremely impressed with how quickly Precision Electric repaired one of our drives that went down. Saved us thousands in downtime.”

“We had an OEM tell us a new servo motor would cost us $10,000, Precision was able to repair it for less than $2,500. Thank you!”

“We had a bunch of equipment that had been damaged or blown up just lying around. We sent these items to Precision and they were able to make us some working spares out of the bad units!”

“We had our machine go down and it was costing us thousands of dollars every day. Precision Electric professionally, and quickly, got us back up and running – and we’re on the other side of the country!”

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Frequently Asked Questions

Why Can’t You Just Give Me A Dollar Amount Quote?

Many companies provide “formula quotes” like above that far exceed actual repair costs. Our experienced team of bench technicians, who are certified across many industrial vendors, will evaluate your equipment at the component level, source parts, and provide you with a real estimate on your repair.

If you need a preliminary dollar amount repair quote, feel free to estimate using the following averages:

  • Minor repairs: As low as 20% of the price of a replacement unit.
  • Major repairs: As much as 70% of the price of a replacement unit.

What Do I Do Next?

Just fill out the form above and you will receive an e-mail that doubles as your packing slip. Once you’ve received the e-mail, just print it out and put it in the box with the item when you ship it.

Is There A Warranty On Repairs?

All of our repairs include a 12-month in-service warranty. This means your warranty doesn’t kick in until you install the equipment you had repaired.

Questions or Concerns?

You can contact our repair manager Mike Sandsmark by phone at 877-625-2402 or E-mail at [email protected]

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