UL 497
For UL 497, standard title is Protectors for Communication Circuits; nrtl is CSA; laboratory is CSA Group Testing and Certification Inc; status is currently recognized, recorded from its source on 2026-08-10.
- Test standard
- UL 497 verified
- Standard title
- Protectors for Communication Circuits verified
- NRTL
- CSA verified
- Laboratory
- CSA Group Testing and Certification Inc. verified
- Status
- currently recognized our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
UL 497 | Protectors for Communication Circuits |
— osha.gov, retrieved 2026-08-10
Source
- osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/csa