Reference Source

UL 1558

For UL 1558, standard title is Metal Enclosed Low-Voltage Power Circuit Breaker Switchgear; 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 1558 verified
Standard title
Metal Enclosed Low-Voltage Power Circuit Breaker Switchgear verified
NRTL
CSA verified
Laboratory
CSA Group Testing and Certification Inc. verified
Status
currently recognized our reading
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA-recognized labs (NRTLs) can certify to a given test standard

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 1558 | Metal Enclosed Low-Voltage Power Circuit Breaker Switchgear |

osha.gov, retrieved 2026-08-10

Source

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