Display Function

FDM121 Display Unit (One to One)

The FDM121 switchboard display unit can be connected to a communication (COM) option (Breaker Communication Module [BCM ULP]) using a circuit breaker ULP cord to display all measurements on a screen. The LCD screen is 3.78 x 3.78 in. (96 x 96 mm). The FMD121 display unit requires a 24 Vdc power supply. The COM option (BCM ULP) unit is supplied by the same power supply via the circuit breaker ULP cord connecting it to the FDM121. See page FDM121 Display for more information.


FDM121 Display Navigation	FDM121 Display Current	FDM121 Display: Voltage	FDM121 Display: Power	FDM121 Display: Consumption

FDM128 Display Unit (One to Eight)

The FDM128 display unit uses an IFE Ethernet interface for low-voltage circuit breakers.


FDM128 Display Navigation	FDM128 Display Current	FDM128 Display: Voltage	FDM128 Display: Power	FDM128 Display: Consumption

For all FDM, in addition to the information displayed on the MicroLogic trip unit LCD, the FDM screen shows demand, power quality, and maximum/minimum ammeter values along with histories and maintenance indicators.