The type 8540 display unit is used as an addition to the type 8358 potential monitoring unit. The current potential diff erence applied to the measuring inputs terminals 12 and 14 are shown with the aid of the display unit.

Technical data
Dimensions	WxHxD 100/70/115 mm ABS / polycarbonate 2 holes to be drilled as per the drilling template, top hat rail in accordance with DIN EN 50022 Housing: IP 40; terminals IP: 10 -20°C to +60°C 2 X 2.5 mm2 solid as per DIN 46288 or 2 x 1.5 mm2 with sleeve AC/DC <200 V, terminal 12, terminal 14 230 V AC / 24 V DC, terminal 20 (L,+), terminal 19 (N,-) power required: max. 3 VA/W digital LCD display, 31/ -place 2 4 kV e?. between terminals 18/19/20 and terminals 12/14
Housing
Attachment
Type of protection
Ambienttemperature
Connections
Measuring input
Auxiliary power
Displays
Test voltage
Ordering information
Type	Part No.
Display unit	220150
Auxiliary power AC
230 V
8540
Display unit	220151
Auxiliary power
DC 18 - 80 V
8540