Discontinued westinghouse breakers

mdbb12 · Mar 28, 2019

I am currently working on a project that has a 1200A magnetic trip HNB frame Westinghouse breaker that is discontinued. It has three adjustments I am assuming they are long time, short time and instantaneous. Can any one clarify this?

kwired · Mar 28, 2019

Same adjustment on each of the three poles? (probably magnetic trip setting)

mayanees · Mar 28, 2019

HNB

HNB

That breaker has magnetic-only adjustability, from 3.4 to 6.7X the trip rating. That's according to the SKM library file.

mdbb12 · Mar 29, 2019

HNB

HNB

For the three settings do you know the order of what they are?

jim dungar · Mar 29, 2019

They are all the same. One dial is for A-phase, one for B, and the third for C phase. They should all be set to the same value.

Discontinued westinghouse breakers

mdbb12

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