National Manufacturing & Distribution (NMD) manufactures and supplies electrical contacts, contact assemblies, and copper bus bar to North American customers. Since 1981, we’ve delivered thousands of components without warranty issues or failures, earning customer relationships spanning over 30 years. Our electrical contact assemblies serve substation oil transformers, oil circuit breakers, and heavy industrial motor starters. With three decades of experience, National provides reliable components for critical applications. Our commitment to quality and service is proven by our loyal customer base who have relied on National for decades. We’ll be there when you need us.
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National Manufacturing Electrical Part Replacements by OEM
What Our Client Say
“Reliable product, consistently delivers.”
The quality is outstanding. These aren't cheap knockoffs. Every part meets OEM specifications and fits perfectly. We've had zero failures with their components, which is critical when you're dealing with equipment that can't afford downtime.
“Excellent product, A+ customer service.”
When our McGraw 550B tap changer needed emergency repairs, their maintenance kit had every component we needed. Our go to source for all of our maintenance needs. Timely service and shipping.
“Impressive quality, durable and reliable.”
What really sets them apart is their customer service. When we needed a custom kit for an older transformer model that the original manufacturer no longer supports, they reverse-engineered the parts. They had a complete solution ready within two weeks.