EM120-RTU-2P
EM120-RTU-2P
Wiring example
EM120-RTU-2P
Wiring example
EM120-RTU-2P
Layout

EM120-RTU-2P

Power measurement/display for 1-, 3-phase mains, use of CT, pulse output,, Modbus RTU

Item No. 7760051004
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Approvals General ordering data Dimensions and weights Temperatures Environmental Product Compliance Measuring current input Measuring voltage input Communication Inputs/outputs Measurement data recording Technical data Insulation coordination Connection data Classifications

Approvals

Approvals
![](https://mdcop.weidmueller.com.cn/mediadelivery/rendition/900_319222/-S800/-T1z1mm-S80) 
ROHS
Conform 

General ordering data

Version
Power measurement/display for 1-, 3-phase mains, use of CT, pulse output,, Modbus RTU 
Order No.
7760051004 
Type
EM120-RTU-2P 
GTIN (EAN)
6944169818202 
Qty.
1 items

Dimensions and weights

Depth
65 mm
Depth (inches)
2.559 inch
Height
94.5 mm
Height (inches)
3.72 inch
Width
72 mm
Width (inches)
2.835 inch
Net weight
240 g

Temperatures

Storage temperature
40 °C...70 °C 
Operating temperature
-25 °C...55 °C 
Humidity
0...95 % (no condensation) 

Environmental Product Compliance

RoHS Compliance Status
Compliant 
REACH SVHC
No SVHC above 0.1 wt% 

Measuring current input

Current-measuring channels
3 
Housing main material
Plastic 
Max. current
5000 A 
Measuring accuracy for current
0.5 %
Rated current
via current transformer 1 A/5 A 

Measuring voltage input

Four-wire system
Yes 
Frequency range, max.
60 Hz
Frequency range, min.
50 Hz
Low voltage network
1 phase 2 wire (L + N) 
3 phase 3 wire (L1 + L2 + L3) 
3 phase 4 wire (L1 + L2 + L3 + N) 
Measurement range, voltage L-L, AC
240…480 V 
Measurement range, voltage L-N, AC
138…276 V 
Measuring accuracy for voltage
0.5 %
Quadrants
4 
Three-wire system
Yes 
Voltage type
AC 

Communication

Addressing
1 - 247 
Baud rate
9600/19200/38400 bit/s 
Communication
Bi-directional 
Parity
none 
even 
odd 
Stop bits
1 
2 
Interface
RS485 
Protocol
Modbus RTU 

Inputs/outputs

Digital output configurable
Yes 
Input type
3 phase AC (3P, 3P +N) 
Secondary side of a current transformer 0-1 A or 0-5 A 
Number of digital inputs
0 
Number of digital outputs
0 
Number of pulse outputs
2 
Temperature input
No 

Measurement data recording

Update interval register
100 ms
Software
EM configuration tools 

Technical data

Display
LCD 
Display monitoring (monitor)
LCD 
Display value
Voltage 
current measured value 
Apparent power 
Reactive power 
Power factor 
Frequency 
Import / export active power demand 
Total import / export active energy 
Total import / export reactive energy 
Total system power demand 
Max. current
5000 A 
Pollution severity
2 
Power factor input
1 % 
Protection degree
IP51 
Rated current
via current transformer 1 A/5 A 
Type of mounting
DIN rail 
Version
Power measurement/display for 1-, 3-phase mains 
use of CT 
pulse output, 
Modbus RTU 
Measurement range, voltage L-N, AC
138…276 V 
Measurement range, voltage L-L, AC
240…480 V 
Surge voltage category
III 
Supply voltage
85…275 V AC 
Three-wire system
Yes 
Four-wire system
Yes 
Quadrants
4 
Sampling frequency 50/60 Hz
14.4 kHz
Measurement result per second
100 ms
Current-measuring channels
3 
Measuring accuracy for voltage
0.5 %
Measuring accuracy for current
0.5 %
Measurement accuracy for active energy (kWh, .../5 A)
Class 0.5 

Insulation coordination

Pollution severity
2 
Surge voltage category
III 

Connection data

Stripping length
8 mm
Type of connection
Screw connection 
Wire cross-section, solid, min.
0.5 mm²
Wire cross-section, solid, max.
1.5 mm²
Wire connection cross section, finely stranded, min.
0.5 mm²
Wire connection cross section, finely stranded, max.
1.5 mm²
Wire connection cross section, finely stranded, two clampable wires, min.
0.5 mm²
Wire cross-section, finely stranded, two clampable wires, max.
1.5 mm²

Classifications

ETIM 6.0
EC002301 
ETIM 7.0
EC002301 
ETIM 8.0
EC002301 
ETIM 9.0
EC002301 
ETIM 10.0
EC002301 
ECLASS 9.0
27-14-23-30 
ECLASS 9.1
27-21-03-01 
ECLASS 10.0
27-14-23-30 
ECLASS 11.0
27-14-23-30 
ECLASS 12.0
27-14-23-30 
ECLASS 13.0
27-14-23-30 
ECLASS 14.0
27-14-23-30 
ECLASS 15.0
27-14-23-30