UL 497B · CSA
For UL 497B, nrtl is CSA; standard title is Protectors for Data Communication and Fire Alarm Circuits; laboratory is CSA Group Testing and Certification Inc; osha docket is OSHA-2006-0042; status is currently recognized, recorded from its source on 2026-10-01; source re-checked 2026-11-10.
- Test standard
- UL 497B verified
- Standard title
- Protectors for Data Communication and Fire Alarm Circuits verified
- NRTL
- CSA
- Laboratory
- CSA Group Testing and Certification Inc.
- OSHA docket
- OSHA-2006-0042 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 497B | Protectors for Data Communication and Fire Alarm Circuits |
— osha.gov, retrieved 2026-10-01
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
OSHA docket
Docket Number: OSHA-2006-0042
— all from osha.gov, retrieved 2026-10-01
Source
- osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/csa