Recommendations for Protecting Access to the MicroLogic Trip Unit Through Test Port

Functions Accessible Through Test Port via USB Maintenance Interface

It is possible to access the functions of the MicroLogic trip unit by connecting a PC running EcoStruxure Power Commission software to the test port of the trip unit through the USB maintenance interface.

The USB maintenance interface allows you to connect a PC running EcoStruxure Power Commissionsoftware to the test port of the trip unit in order to carry out the complete range of checks, tests and adjustments on the MicroLogic trip unit.

The USB maintenance interface is compatible with the following devices:

• ComPacT NSX circuit breakers

• PowerPacT H, J, and L-Frame circuit breakers

Functions Accessible Through Test Port via Service Interface

It is possible to access the functions of the MicroLogic trip unit by connecting a PC running EcoStruxure Power Commission software to the test port of the trip unit through the Service interface.

The service interface allows you to connect a PC running EcoStruxure Power Commissionsoftware to the test port of the trip unit in order to carry out the complete range of checks, tests and adjustments on the MicroLogic trip unit.

The service interface is compatible with the following devices:

• MasterPacT NT/NW circuit breakers

• EasyPact™ MVS circuit breakers

• ComPacT NS circuit breakers

• PowerPacT P and R-frame circuit breakers

• ComPacT NSX circuit breakers

• PowerPacT H-, J-, and L-frame circuit breakers

General Recommendations for Protecting Access Through Test Port

To protect access to functions accessible through the test port on the MicroLogic trip unit, it is recommended to:

• Install the MasterPacT NT/NW, ComPacT or PowerPacT circuit breaker in a locked area so that only authorized personnel can access the MicroLogic trip unit.

• Keep that area locked at all times.

• Give the key or access code to authorized personnel only.

For further information, see the recommendations for restricting local access to the MasterPacT, ComPacT, and PowerPacT circuit breaker.

Recommendations for PCs Running EcoStruxure Power Commission Software

To protect access to the MicroLogic trip unit from PC connected locally to the test port on the front of the trip unit, it is recommended to:

• Keep PCs safely locked away when not in use.

• Make sure that PCs that run the EcoStruxure Power Commission software require a user login and password.

• Enforce the use of strong passwords.

• Make sure that user passwords are changed regularly.

• Forbid reuse of old passwords.

• Set a timer to lock the PC screen after a period of idle time.

• Harden PCs following the most recent vendor guidelines for the operating system running on your PC.

• Limit the number of users allowed to use EcoStruxure Power Commission software.

• Keep antivirus applications for PCs up to date.