Technical FAQs

Ask a Question

What was the AIR rating of an older QOB breaker with a green toggle?

In the early 1970`s a green toggle indicated a higher AIR rating of 10 kA. The standard at the time was 5 kA. After 1975 we changed to the now standard black toggle.

CTA-ID : 2021439
Was this helpful?
What can we do to improve the information ?