1. Overview
2. Normative references
3. Definitions
4. Preferred trip device current ratings or settings
(amperes)
5. Types and response of direct-acting overcurrent
trip functions
6. Calibration of direct-acting overcurrent trip
functions
7. Delay times of direct-acting overcurrent trip
functions
8. Reverse-current trip devices for general purpose
dc circuit breakers
9. Undervoltage trip devices
10. Tests
11. Software process verification
Annex A (informative) - Illustrative time overcurrent
characteristics
Annex B (informative) - Bibliography