[Low-voltage AC Power-switching Devices] Trip Devices Certified for Use in Low-voltage AC Power Circuit Breakers, PAYK

See General Information for Low-voltage AC Power-switching Devices



This category covers trip devices suitable for use in place of the original trip device of a low-voltage ac power circuit breaker. Certification covers only the trip device in its ability to sense and respond to overcurrent and fault-current conditions.

This category does not cover the circuit breaker on which the trip device is mounted.


The following product identity appears on the product:

    Trip Device


For additional information, see Low-voltage AC Power-switching Devices (PAPU) and Electrical Equipment for Use in Ordinary Locations (AALZ).


The basic standard used to investigate products in this category is ANSI/IEEE C37.59, "IEEE Standard Requirements for Conversion of Power Switchgear Equipment," which references ANSI/IEEE C37.13, "Low-Voltage AC Power Circuit Breakers Used in Enclosures," ANSI/IEEE C37.17, "Trip Devices for AC and General Purpose DC Low Voltage Power Circuit Breakers," ANSI/NEMA C37.50, "Switchgear Low Voltage AC Power Circuit Breakers Used in Enclosures," and ANSI/UL 1066, "Low-Voltage AC and DC Power Circuit Breakers Used in Enclosures."


The Certification Mark of UL on the product is the only method provided by UL to identify products manufactured under its Certification and Follow-Up Service. The Certification Mark for these products includes the UL symbol, the words "CERTIFIED" and "SAFETY," the geographic identifier(s), and a file number.

Additional Certification Markings

Products covered under this category are additionally marked with the following information:


Alternate UL Mark

The Classification Mark of UL on the product is the only method provided by UL to identify products manufactured under its Classification and Follow-Up Service. The Classification Mark for these products includes the UL symbol, the word "CLASSIFIED" above the UL symbol (as illustrated in the Introduction of this Directory), and the following additional information:

Control No.

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Last Updated on 2013-05-16
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