Summary of Topics m0489_12_20140724_sum.htmlSubject 489 (489A, 1066, 1077)
Bulletin Dated: July 24, 2014
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:
UL 489
1. Addition of Requirements for the Use of 90°C (194°F) Wire with Molded-Case Switches
2. Revision to Requirements for the Calibration Testing for DC Circuit Breakers
3. Revision of Requirements to Reference Supplement SE
4. Clarification of Requirements for Interchangeable Trip Units
5. Addition of Three-Pole Tests to Table 7.5.4
6A. Revision of Requirements for the Temperature Measurement in Clause 7.1.4.1.11
6B. Revision of Requirements for the Temperature Measurement in Clause 7.1.4.1.11
7. Clarification to 7.10.3
8. Addition to Temperature Test Requirements
9. Clarification of Requirements for Series-Connected Circuit Breakers
10. Revisions to Address DC Rated Circuit Breakers
11. Revision of HACR Marking to be Optional
12. Addition of Calibration for Circuit Breakers employing AFCI, GFCI, and EGFP
13. Additional Slash Ratings For Handle Tied Breakers
14. Electronic Trip Circuit Breakers and 100 Percent Calibration at 40°C
15. Revision to Table 7.5.4 Regarding the GFPE Interrupting Operations
16A. UL 1699C, Proposed Standard for System Combination Arc-Fault Circuit Protection
16B. Addition of Unwanted Tripping Tests
17A. Motor Protection Circuit Breakers
17B. Motor Protection Circuit Breakers
18. Clarification on the Use of 3-Pole Breakers for Use in Single-Phase Circuits and Wye Systems
19. Circuit Breaker with Dependent Manual Operation
20. Verbiage to Test the 15A Rating
21. "Degree Sign" Marking Requirement for Wire Type
22. DC Shunt Resistance
23. Clarification of Solid/Stranded Requirement Only Required for 14 - 10 AWG
24. Reliability of Solid State Components in Electronic Trip Units
25. Expanding the Scope of UL 489 to 1000 Vac/1500 Vdc
26. Addition of Requirements for Thermal Memory Retention
27. Addition of Requirements for Self -Protect Function for Electronic Trip Units
UL 1077
28. Field Wiring Terminals for Supplementary Protectors
29. Other Protective Type Devices
30. Overvoltage Testing
31. Correction to Figures 21.1 and 25.1
32. Test Conductor Length
33. DC Rated Protectors with Poles Wired in Series
34. UL 489 and Strain Relief Requirements
35. New Requirements for Arc Energy Reduction
36. New Proposed Standard for Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures for Use with Photovoltaic (PV) Systems, UL 489B