IEEE Draft Standard for Trip Systems for Low-Voltage (Up to 635 V) AC and General Purpose Low- Voltage (Up to 600 V) DC Power Circuit Breakers

This standard pertains to the requirements for current and voltage protective functions of:

1) direct-acting overcurrent electromechanical trip devices
2) direct-acting overcurrent electronic trip systems
3) reverse-current trip systems
4) undervoltage trip devices

that are integral with low-voltage ac (635V and below) and general purpose low-voltage dc (600V and below) power circuit breakers covered by IEEE Std C37.13, IEEE Std C37.14, and IEEE Std C37.16.

Additional information, communication and/or additional internal or external protective functions or devices are not covered by this standard. This standard should not be interpreted to restrict the inclusion of such functionality in the device.