range Acti 9
range of product Acti 9 iEM3000
device short name IEM3255
product or component type Energy meter


poles description 3P + N
1P + N
type of measurement Active and reactive energy
Active and reactive power
metering type Active, reactive, apparent energy (signed, four quadrant)
device application Multi-tariff
Partial meter
Sub billing
accuracy class Class 0.5S active energy conforming to IEC 62053-22
Class 0.5S active energy conforming to IEC 61557-12
Class C active energy conforming to EN 50470-3
input type External CT 1 A or 5 A
[In] rated current 5 A
1 A
rated voltage 100…277 V
173…480 V
network frequency 60 Hz
50 Hz
technology type Electronic
display type LCD display
sampling rate 32 samples/cycle
measurement current 1…32767000 mA
maximum value measured 99999999 MWh
tariff input Tariff (4)
communication port protocol Modbus RTU at 9.6, 19.2 and 38.4 kbauds even/odd or none, insulation 4000 V
communication port support Screw terminal block: RS485
local signalling Green indicator light: power ON
Yellow flashing LED: accuracy checking
alarm: overload
Yellow indicator light: communications are active on the Modbus port (Modbus)
number of inputs 1 digital 0…5 V/11…40 V 24 V DC
number of outputs 1 digital (static)
output voltage 5…40 V DC@50 mA
mounting mode Clip-on
mounting support DIN rail
connections – terminals Current circuit: screw terminals 6 mm² cable(s)
Voltage circuit: screw terminals 2.5 mm² cable(s)
overvoltage category III
standards IEC 61036
IEC 62053-23
UL 61010-1
IEC 61010
IEC 62053-22
IEC 61557-12
product certifications CE conforming to IEC 61010 (safety)
CE conforming to EN 61557-12 (power monitor)
CE conforming to IEC 61326-1 (EMC)
CULus conforming to UL 61010 (safety)
CULus conforming to ANSI C12.20 (sub-meter)
EAC (sub-meter)
RCM conforming to NMI M 6-1 (sub-meter)
MID conforming to EN 50470-3 (sub-meter)
MID conforming to EN 62052 (sub-meter)


IP degree of protection IP40 front panel: conforming to IEC 60529
IP20 body: conforming to IEC 60529
pollution degree 2
relative humidity 5…95 % at 50 °C
ambient air temperature for operation -25…55 °C – IEC
ambient air temperature for storage -40…85 °C
operating altitude < 2000 m
colour White
9 mm pitches 10
width 90 mm
height 95 mm
depth 69 mm

Packing Units

Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Weight 365.0 g
Package 1 Height 8 cm
Package 1 width 9.5 cm
Package 1 Length 10.5 cm
Unit Type of Package 2 S03
Number of Units in Package 2 30
Package 2 Weight 11.426 kg
Package 2 Height 30 cm
Package 2 width 30 cm
Package 2 Length 40 cm
Unit Type of Package 3 P12
Number of Units in Package 3 720
Package 3 Weight 283.224 kg
Package 3 Height 80 cm
Package 3 width 120 cm
Package 3 Length 110 cm

Contractual warranty

Warranty 18 months