POWER MONITOR 51A
POWER MONITOR 51A

POWER MONITOR 51A

Power measurement/display for 1-, 3-phase mains

Item No. 1470260000
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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 Voltage quality measurement Insulation coordination Classifications Tender specification sheets

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  
Order No.
1470260000  
Type
POWER MONITOR 51A  
GTIN (EAN)
4050118276756  
Qty.
1  items
Delivery status
This article will no longer be available in the future.  
Available until
30.12.2026  
Alternative product
[2500880000](~/p/2500880000)  

Dimensions and weights

Depth
68  mm
Depth (inches)
2.677  inch
Height
96  mm
Height (inches)
3.78  inch
Width
96  mm
Width (inches)
3.78  inch
Net weight
386  g

Temperatures

Storage temperature
-25 °C...70 °C  
Operating temperature
-25 °C...55 °C  
Humidity
35 % to 85 % relative humidity level  

Environmental Product Compliance

RoHS Compliance Status
Compliant  
REACH SVHC
Lead 7439-92-1  

Measuring current input

Current-measuring channels
4  
Measuring accuracy for current
0.5  %
Rated current
1 / 5 A  
Residual current measuring
No  

Measuring voltage input

Four-wire system
Yes  
Measurement range, voltage L-L, AC
0…500 V  
Measurement range, voltage L-N, AC
0…250 V (1P3W)  
0…289 V (3P4W)  
Measuring accuracy for voltage
0.5  %
Three-wire system
Yes  

Communication

Interface
RS485: Autobaud, 9,6 – 115.2 kbps (pluggable screw terminals)  
USB  
Protocol
Modbus RTU  

Inputs/outputs

Number of digital inputs
2  
Number of digital outputs
2  

Measurement data recording

Memory; minimum and maximum values
No  
Software
Power Monitor Manager  
Integrated logic
No  

Technical data

Display value
Apparent power  
Effective power  
THD-I  
THD-U  
Voltage harmonic  
Current harmonic  
Reactive power  
Power factor  
Voltage  
Current  
Frequency  
Temperature  
Voltage unbalance  
Current unbalance  
Pollution severity
2  
Protection degree
Front panel: IP51  
Enclosure: IP20  
Rated current
1 / 5 A  
Version
Power measurement/display for 1-, 3-phase mains  
Standards
IEC 61010-1  
Measurement range, voltage L-N, AC
0…250 V (1P3W)  
0…289 V (3P4W)  
Measurement range, voltage L-L, AC
0…500 V  
Surge voltage category
II  
Voltage supply
85...264 VAC  
100...300 V DC  
Supply voltage
230 V  
Three-wire system
Yes  
Four-wire system
Yes  
Sampling frequency 50/60 Hz
1,024  kHz
Measurement result per second
100,000  ms
Residual current measuring
No  
Current-measuring channels
4  
Measuring accuracy for voltage
0.5  %
Measuring accuracy for current
0.5  %
Measurement accuracy for active energy (kWh, .../5 A)
1% for the calculated values  
Operating-hours counter
No  
Clock
Yes  

Voltage quality measurement

Unbalanced
Yes  
Positive, negative and zero system
Yes  
Brief interruptions
Yes  
Sequence-of-events recorder function
No  

Insulation coordination

Pollution severity
2  
Surge voltage category
II  

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  

Tender specification sheets

Long specification
Electrical parameters have to be measured and visualised to optimise your machines' and systems' energy requirements. Only this allows analysis and, subsequently, the achievement of savings and the establishment of an energy management system. An easy-to-install solution is now available from Weidmüller. When implementing an energy management system according to ISO 50001, the Power Monitor 51A is one of the modules necessary to meet the requirements of recording, displaying and analysing power flows.
Technical data:
Input data: measurement variable: active, reactive, apparent power
Recording of frequencies up to 99.99 Hz and temperatures up to 100°C
Measurement variable: AC sine (50/60 Hz) designation
Input: voltage measurement inputs V1, V2, V3
Input voltage range: 0 V AC ... 500 V AC (phase/phase)
Input voltage range: 0 V AC ... 300 V AC (phase/neutral conductor)
Accuracy: 0.5% input current range: via external converters, input current: 8,000 A (primary), input current: 5 A (secondary) ,
Response threshold of rated measurement range value: 1 mA
Power-measurement range: 0 kW ... 9999999.9 kW
Power-measurement range: 0 kvar ... 9999999.9 kvar
Power-measurement range: 0 kVA ... 9999999.9 kVA
Up to 31 harmonics.
Accuracy: 1%
Interface: RS-485
Type of connection: screw terminals
General data: width: 96 mm, height: 96 mm
Display: LCD with backlit display
Supply voltage range: 85 V AC ... 264 V AC
Rated power consumption: 6 VA, protection degree: IP51 (front), IP20 (rear):
Type of mains network: 3-phase (3- or 4-conductor), 2-phase (2-conductor) and 1-phase (1-conductor) also able to measure current in the neutral conductor
Colour: black; conformity: CE marking
Rated insulation voltage: 300 V AC (EN 61010-1)
Overvoltage category: II, ambient temperature (operational): -25°C ... 55°C, ambient temperature (storage/transport): -25°C ... 70°C
Max. perm. humidity (operation): 85%, height ASL <2000 m
Connection data: flexible conductor cross-section min.: 0.5 mm², flexible conductor cross-section max.: 2.5 mm², rigid conductor cross-section min.: 0.2 mm², rigid conductor cross-section max.: 4 mm², type of connection: screw connection
Ordering details: product: Weidmüller Interface, type: Power Monitor, item no.: 1470260000  
Short specification
Measuring device with memory function for optimising energy requirements