Browse FAQs

Do Multi-9 breakers have a 480 Vac Delta rating?

Published date: 21 May 2020

Issue:
Multi 9 (M9) breaker and 480 Vac breakers

Product Line:
Circuit Breakers

Environment:
Applies to Multi 9 (M9) circuit breakers

Cause:
Need a 480V breaker in the miniature style.

Resolution:
No, the Multi 9 breakers are not rated 480 Vac delta.

The UL 1077 listed M9 is rated for 480Y/277 Vac, not 480 Vac delta.
The IEC version has a 440 Vac rating.
The UL 489 version has a 480Y/277 Vac rating (.5A-20 A), 240 Vac (.5 -35 A).

Was this helpful?

What can we do to improve the information ?

Can't find what you are looking for?

Reach out to our customer care team to receive information on technical support, assistance for complaints and more.