Subject 489 (489A, 1066, 1077)

Bulletin Dated: December 7, 2009

SUMMARY OF TOPICS

The following topics were discussed at the meeting of the Standards Technical Panel for molded-case circuit breakers, molded-case switches, and supplementary protectors, STP 489:

1. Update on UL 489 Proposals Currently in Process

2. Update on Activities for the Standard for Arc-Fault Circuit-Interrupters, UL 1699

3. Circuit Breakers for Use in Photovoltaic Applications

4. Circuit Breakers for Use with Wind Turbines

5. EMC Requirements

6. Software Requirements

7. Update to UL 489 Appendix C (Circuit Calibration) with Digital Instrumentation Systems

8. UL 489 Cyclic Overload Protection Requirements

9. International Harmonization

10. Revision to UL 489 Spacing Requirements for Clamped Joints

11. Addition of UL 489 Marking Symbols and Abbreviations

12. Revision to UL 489 Marking Requirements for a 3-Pole Slash Rated Circuit Breaker

13. Revision to UL 489 Voltage Ratings

14. Revision to UL 489 135% Calibration Test Requirements

15. Revision to UL 489 Handle Tie Requirements in Response to 2008 Revisions to the NEC Section 210.4 (B)

16. UL 1066 - Revisions to C37.13

17. UL 1066 - Revision to extend DC voltage rating