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Electrical contact material selection

Electrical contacts for motor controls are usually made from copper. When contacts are in the closed position for a long period of time, accompanied by a healthy flow of amperage, they tend to ’stick’ or weld.

Selecting Allen Bradley Electrical Contact replacements for Motor Starters

When it comes to buying Allen Bradley contactors and starters, or any OEM brand for that matter, do you choose NEMA or IEC style products? First, what is the difference between NEMA and IEC?

Where can electrical distributors source hard-to-find or discontinued electrical contacts for their customers?

When OEMs discontinue an electrical contact series or the company merges or shuts down, customers are often left scrambling to find replacement components. Motor control systems and manufacturing equipment can be in service for years or decades.

How do you know when it’s time to replace electrical contacts?

The obvious sign is when your machinery stops working and you narrow it down to a failed electrical contact. But this is past the point when routine maintenance would have discovered an electrical contact was wearing down, so it’s unusual.

Cutler-Hammer Freedom Series Contactors – FAQ

Cutler-Hammer Freedom Electical Contact Series frequently asked questions.


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