Reference Source

UL 497A

For UL 497A, laboratory is UL LLC; standard title is Secondary Protectors for Communication Circuits, verified against its source on 2026-08-10.

Laboratory
UL LLC verified
Standard number
UL 497A verified
Standard title
Secondary Protectors for Communication Circuits verified
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

What the source says

UL 497A | Secondary Protectors for Communication Circuits |

— osha.gov, retrieved 2026-08-10

Source

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.