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Standard 489, Edition 13

Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures

UL CSDS Proposal
Standard 489, Edition 13 Edition Date: May 11, 2018
Summary of Topics b0489_13_20180511_sum.html

Subject 489

Bulletin Dated: May 11, 2018


The following changes in requirements to the Standard for Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures, UL 489, are being proposed:

1. Proposed Exception for 6" Minimum Length of Field Wiring Conductor (Lead)

2. Revision to the Requirements for Draw-out Circuit Breakers

3. Revisions to the Calibration Requirements for Supplement SB

4. Revision to Table - Available current in test circuits

5. Revised Requirements for Accessory Terminal Leads Wire Size

6. Revision of Table to Include Calibration Testing at -35 °C and 66 °C

7. Addition of Requirements from UL 489G into UL 489

Back to Standard 489, Edition 13

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