LEM DHR 200 C420, Hall Effect Current Sensor, 200Amp , True RMS 4-20mA output
Compact and versatile transducers for high AC and DC currents from 100 to 1000A True RMS with signal conditioning. Choice of output types: 4-20 mA, 0-5 V or 0-10 V, Bandwidth: DC 20..6000 Hz
Features
VFD and SCR waveforms current measurement
True RMS output
4-20mA current output
Panel mounting
Eliminates insertion loss
Isolated plastic case recognised according to UL94-V0
Advantages
Large aperture for cable up to ?32mm
High isolation between primary and secondary circuits
Easy installation
Applications
-VFD Controlled Loads
VFD output indicates how the motor and attached load are operating
-SCR Controlled Loads
Accurate measurement of phase angle fired or burst fired(time proportional) SCR's. Current measurement gives faster response than temperature measurement
-Application Domain
Energy and Automation
Specification
LEM Part Number
DHR 200 C420
Technology
Open Loop Hall Effect
ROHS
Yes
Supply Voltage
20 - 50V
Load Current (RMS + DC)
200 Amp
Output
4-20mA
Isolation
4kV (AC, 50Hz, 1 min)
Bandwidth
20-6000Hz
Mounting Style
Panel Mount
Operating Temperature Range
-40°C / 70°C
Accuracy
Level 3
Termination Style
SFKC 2.5/4-ST-5.08-RF(Phoenix Contact)
Unit Weight
260g
Factory Pack Qty
6
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Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
2026 LEM Application Guide
Risbabh EM94-Z-V3-H-M, Panel Mount DC kWh Meter, Class 0.5, 50-150mV Shunt input, 201-1000VDC, 2 Alarm/Pulse Outputs, RS485 & USB Comms, Single Line LCD Display, 60-300V AC/DC Aux Supply, Internal Logging
2 Pulse/Alarm Outputs
50-150mV Shunt Input, and nominal voltage 201-1000VDC
RS 485 communication up to 57,600 bit/s
USB Port
8MB Internal Storage
4 x DC Measurement Only
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The meter is intended for measuring, analysing and monitoring DC Power. The meter records TRMS value according to the principle of fast sampling of voltage and current signals. A built-in microprocessor calculates measurands (voltage, current,, energy, power.) from the measured signals.
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Features :
96 x 96mm Panel Mount
Accuracy class 0.5
Simple Menu
RS 485 communication up to 57,600 bit/s
USB Comms
8MB Internal Logger
60-300VAC/DCÂ power supply
Specification
Rishabh Part Number
EM94-Z-V3-H-M
Functions
kWh Meter, Energy Meter
Supply Voltage
60-300VAC/DC
Nominal Measurement Range
201-1000VDC
Maximum Measurement Range
201-1000VDC
Display
4Â Line LCD
Pulse/Relay Output
2
Accuracy
Class 0.5 (Energy)
USB
YES
Real Time Clock
1min/month (30ppm)
Isolation
3.5kV
RS485 Modbus RTU
YESÂ 57,600bps
Weight
450g
Certification
EN 61010-1 Installation Category III
Factory Pack Qty
1
Environment
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IP54
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Safety
Protection Class II
Enclosure Material
Mablex with fire protection to UL94-V-O. Self extinguishing
EnclosureSize
96 x 96mm x 83.5mm (72mm behind panel)
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Terminals
Rising Cage 4mm² (12 AWG) cable max
Humidity
< 75% Non Condensing
Operating Temperature
-20 →+70 °C
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Datasheet
Product Datasheet
Software
Software User Manual
Software Download Link
Application Notes
1)Reading Data from Registers -> Download file
2)Maximum Memory Size -> Read below
Max Available Memory Locations in 8MB Size = 273030
Actual parameter stored in Each log (Memory locations used) = Date +time+Number of parameter selected by user
Considering your example for 2 parameters:
Number of parameter selected by user = 2 (kwh & kVA)
Actual parameter stored in Each log = 1(Date) +1(time)+ 2 (Parameters) = 4 (memory locations used per log)
Maximum log that can be stored = Max Memory Location/Actual parameter stored in Each log =273030/4= 68257
Timelog Interval setting = 15 minutes
Log in one day = (60 /Timelog Interval setting) * 24 =(60/15)*24 = 96 Logs
Max Days = Maximum log that can be stored / log in one day = 68257 / 96 = 711 days = 1 Year & 11 Months = 23 Months.
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LEM HAT 800-S O/L Hall Effect Current Transducer, 800 Amp, +/-15V Supply, 40.5 x 30.5 Square Aperture, +/-4V Output
Features
Bandwidth DC to 5kHz
Open loop transducer using Hall effect
Compact and versatile
Panel mounting-Horizontal or Vertical
Insulated plastic case recognized according to UL 94-V0
Advantages
Very good linearity
Very good accuracy
Low temperature drift
Wide frequency bandwidth
Very low insertion losses
High immunity to external interference
Current overload capability
Low power consumption
Wide dynamic range, nominal 100 to 1500 A in one package.
Up to 2500 A measurement range
Applications
AC variable speed drives and servo motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications.
Specification
LEM Part Number
HAT 800-S
Technology
Open Loop Hall Effect
Aperture
40.5 x 30.5mm Square
ROHS
Yes
Supply Voltage
+/-15 VDC Bipolar, Isolated
Load Current (RMS + DC)
800 Amp
Measurement Range
+/-2400 Amp
Output
+/-4 V
Isolation
4.9 kV
Bandwidth
DC-25 kHz
Mounting Style
Panel Mount
Operating Temperature Range
-10°C / 80°C
Accuracy
1%
Termination Style
Molex 5045-04A
Unit Weight
300g
Factory Pack Quantity
10
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
2026 LEM Application Guide
Typical Bipolar Power Supply Wiring
LEM FRS 2000-SUI, O/L Coreless Current Transducer, 2000 Amp, +12V...24VDC Supply, 111.4 x 18.7 Square Aperture, 4-20mA Unipolar Output
Features
Bandwidth DC to 1000kHz
Open loop transducer using Coreless Hall effect Technology
Compact and versatile
Panel mounting-Horizontal or Vertical
Insulated plastic case recognized according to UL 94-V0
Advantages
Very good linearity
Very good accuracy
Low temperature drift
Wide frequency bandwidth
Very low insertion losses
Low power consumption
Applications
Wind Turbines
Electrolyser
AC variable speed drives and servo motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications.
Specification
LEM Part Number
FRS 2000-SU
Technology
Open Loop Coreless Hall Effect
Aperture
111.4 x 18.7mm Square
ROHS
Yes
Supply Voltage
+12...24VDC, Isolated
Load Current (RMS + DC)
2000 Amp
Measurement Range
+/-6000 Amp
Overload Rating
N/A
Output
4-20mA Unipolar
Isolation
5.3 kV
Bandwidth
DC-1000 kHz
Mounting Style
Panel Mount/Busbar Mount
Operating Temperature Range
-25°C / 85°C
Accuracy
1%
Termination Style
Molex 5045-04A
Unit Weight
1500g
Factory Pack Quantity
4
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Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
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LEM FRS 2000-SBI, O/L Coreless Current Transducer, 2000 Amp, +12V...24VDC Supply, 111.4 x 18.7 Square Aperture, 4-20mA Bipolar Output
Features
Bandwidth DC to 1000kHz
Open loop transducer using Coreless Hall effect Technology
Compact and versatile
Panel mounting-Horizontal or Vertical
Insulated plastic case recognized according to UL 94-V0
Advantages
Very good linearity
Very good accuracy
Low temperature drift
Wide frequency bandwidth
Very low insertion losses
Low power consumption
Applications
Wind Turbines
Electrolyser
AC variable speed drives and servo motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications.
Specification
LEM Part Number
FRS 2000-SU
Technology
Open Loop Coreless Hall Effect
Aperture
111.4 x 18.7mm Square
ROHS
Yes
Supply Voltage
+12...24VDC, Isolated
Load Current (RMS + DC)
2000 Amp
Measurement Range
+/-6000 Amp
Overload Rating
N/A
Output
4-20mA Bipolar
Isolation
5.3 kV
Bandwidth
DC-1000 kHz
Mounting Style
Panel Mount/Busbar Mount
Operating Temperature Range
-25°C / 85°C
Accuracy
1%
Termination Style
Molex 5045-04A
Unit Weight
1500g
Factory Pack Quantity
4
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Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
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SI01-5555H00000000(SI-101-1-2-H), Signal Isolator/Conditioner, 4-20mA input, 85-300VAC/DC aux, 4-20mA output, Fixed zero and span
Fixed Zero and Span Setting
150mS Response Time
PC 94 UL V0
Input signals can be converted to insulated 4 to 20 mA DC output (for direct current output type)
Each unit needs just 22.5 x 114 mm depth DIN Rail cabinet space
Specification
Fastron Electronics Part Number
SI01-5555H00000000
Control Output
4-20mA
Input
4-20mA
Over Range
x 1.5
Operating Temperature
0 - 60°C
Load Voltage
85-300VAC/DC
Span Adjustment Range
Fixed
Zero Adjustment Range
Fixed
Termination Style
Screw
Mounting Style
DIN Rail Mount
Case Material
PC - UL 94 V0
Weight
170g
Factory Pack Qty
1
Â
Datasheet
Product Datasheet
LEM LA 125-P Series Closed Loop AC/DC Hall Effect Sensor
Features
Bandwidth DC to 100kHz
Closed loop transducer using Hall effect
Compact and versatile
PCB Mounted with Strain Relief
Insulated plastic case recognized according to UL 94-V0
Advantages
Very good linearity
High accuracy
Low temperature drift
Wide frequency bandwidth
Very low insertion losses
High immunity to external interference
Current overload capability
Low power consumption
Applications
AC variable speed drives and servo motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications
Water Treatment Electronics
Specification
LEM Part Number
LA125-P
Technology
Closed Loop Hall Effect
Aperture
13 x 11mm
ROHS
Yes
Supply Voltage
+/-12..15 VDC Bipolar, Isolated
Load Current (RMS + DC)
125 Amp
Measurement Range
+/-200 Amp
Output
125 mA
Isolation
3 kV
Bandwidth
DC-100 kHz
Mounting Style
PCB Mount
Operating Temperature Range
-10°C / 80°C
Accuracy
0.6%
Termination Style
Through Hole PCB
Unit Weight
35g
Factory Pack Quantity
25
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
LEM ART-B22-D175-SP3, AC Measurement Rogowski Coil (coil only). 17.5cm Diameter, Class 0.5, 3M Shielded Cable Connection
Flexible clip-around Rogowski coil for the electronic measurement of AC current with galvanic separation between the primary circuit (power) and the secondary circuit (measurement). The patented Perfect Loop Technology dramatically reduces both the error due to the position of the measured conductor within the aperture, and the error due to the proximity of external conductors.
The ART series single phase flexible rope CT from LEM. In conjunction with AI-PMUL combined integrator & signal conditioner LEM offer True RMS 0-5V, 0-10V, 0-20mA, 4-20mA outputs, or direct linear outputs 0.333V or 0.166V
Included is a 17.5cm diameter rope CT, and 1.5M of twisted pair (1000V) output leads for connection to an integrator, or meter/logger with integration function.
LEM coils come with 5 year warranty
Features
Rated insulation voltage 1000 V Cat III PD2
Accuracy Class 0.5 (IEC 61869-2)
Protection degree IP67
? 70, ? 125, ? 175, ? 300 mm sensing aperture
3 m output cable (other lengths available see page 8)
Ambient temperature ?40 °C … +80 °C
Very flexible and thin coil: 6.1 mm
Slot for attaching the loop on the primary with a cable tie
? 2 mm hole to pass a security seal tampering
An innovative patented clasp drastically reduces the positioning error near the closing
Internal shield for enhanced measurement accuracy at low primary currents.
Advantages
Thin, flexible, and light weight solution
Very low positioning error
Quick, non-intrusive and easy setup
A single sensor for a large current range without overload
Less influenced by external fields
Adaptable for a large range of cable diameters
Applications
MV/LV substations on LV side: Transformer Condition Monitoring
Power metering: current measurement for active power calculation
Building sub-metering: energy efficiency monitoring, consumption analysis and cost allocation
Power quality monitoring: electrical loads and distribution system equipment
Fault Detection, Isolation and Repair (FDIR): isolate the site of the fault
Remote Terminal Units (RTU)
Phasor Measurement Units (PMU)
Standards
IEC 61010-1: 2010; IEC 61010-2-32 ed.3: 2012
1) IEC 61869-1 ed1.0: 2007; IEC 61869-2: ed1.0: 2012
1) IEC 61869-6: draft 2016; IEC 61869-10: draft 2016
UL
Specification
LEM Part Number
ART-B22-D175-SP3
Function
AC Current Measurement
Measuring Range
0 - 5,000 Amp RMS (Contact Us for Possible Replacement for wider range)
Secondary Voltage (Sensitivity)
22.5mV
Frequency Measuring Range
50-300kHz
Operating Voltage
Self Powered
Accuracy
0.5% from 25 to 5000 Amp
Phase Angle
< 0.004
Coil Diameter (?)
17.5cm
Coil Circumference
55cm
Integrator to Coil Cable
3M Twisted Pair
Maximum Voltage
1000V Reinforced insulation according to EN 61010-1
Operating Temperature
-15°C to 65°C
Storage Temperature
-45°C to 80°C
Isolation (50Hz, 1 min)
7.4kV
Overload
350,000 Amp
Termination Style
2 Stripped Wires
Weight
138g
Factory Pack Qty
1
Certifications
UL, ROHS
Datasheet
Product Datasheet
Application Notes
1) The Rogowski coil can measure any primary current as there is no saturation effect.
2) Not tested given that in the worst case (load = 0 Ohm i.e. short circuit on the output) the peak dissipated power remains low (< 2 Watts)
3) Frequency bandwidth and phase shift modeling schematic can be provided on request.
4) Referring to the main phase offset of 90 ° (a Rogowski coil is a derivative current transducer)
5) Considering a primary conductor of at least ? 15 mm, perpendicular and in contact with the Rogowski coil.
6) Considering an external conductor of at least ? 15 mm the same current level than internal conductor, perpendicular and in contact with the Rogowski coil.
Rishabh Rish Con M-22122, Class 0.5 Power Transducer 4 wire, 20-480V L-L, 5Amp measurement, 85-253VAC/90-320VDC Supply, 2 x Analogue -20-20mA/4-20mA/-10-10V output, 2 Relay Outputs, USB Programming Port, Modbus RTU Comms, 750 OHM Load Resistance, without display
Measures Active Power/Phase Angle/Power Factor
Measures Apparent/Reactive/Active Power
Analogue output setting -20-20mA/4-20mA/-10-10V
2 x Relay Outputs 0.5 Amp @ 250VAC
300mS response time
PC 94 UL V0
Input signals can be converted to insulated 4 to 20 mA DC output (for direct current output type)
Each unit needs just 122.5 x 66 x 106.5mm depth DIN Rail cabinet space
Specification
Rishabh Part Number
Rish Con M-22121
Functions
Active Power/Phase Angle/Power Factor Transducer 4 wire
Measurement Output
2Â x 4-20mA/0-20mA/0-10V User Selectable
Minimum Load Resistance
750 Ohm
Relay Output
2Â x 0.5 Amp @ 250VAC NO Voltage Free Contacts
Relay Type
Voltage Free Contact, 0.5 Amp @ 250VAC
Input
20Â - 480VAC L-L 50/60Hz
Overload (Continuous)
120%
Overload (1 second)
150%
Operating Temperature
-10 - 55°C
Supply Voltage
85-253VAC/90-320VDC
Accuracy
0.2%
Response Time
300mS
Termination Style
Screw
Mounting Style
DIN Rail Mount
Mounting SizeÂ
122.5 x 66 x 106.5mm
Safety
IP40/IP20 EN60529 Protection Class II EN61010
Weight
400g
Factory Pack Qty
1
Â
Datasheet
Product Datasheet
Product User Manual
Technical Support
Rish Con P setup procedure blog
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Eastron Europe DCM230 1-2-1-1 V2, DIN Rail Mount DC kWh Meter, 1000VDC, 85-265VAC aux, Class 1, 45/60/75mV Shunt Connect, w/ 1 x pulse outputs and RS485 Modbus RTU Comms, Single Tariff, MID Approved
45/60/75mV Shunt Connect
RS 485 communication up to 38,400 bit/s as standard
1 x Pulse Outputs (1 Configurable)
Bidirectional Measurement
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The meter is intended for measuring, and monitoring single-phase or electrical power network. The meter records DC Current and Voltage (DC Power) value according to the principle of fast sampling of voltage and current signals. A built-in microprocessor calculates measurands (voltage, current, energy, power) from the measured signals.
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Features :
Accuracy class 1
Measurement of Active and Reactive Power
Modbus RTU communication up to 38,400 bit/s communication
Pulse output as standard
Graphic LCD with illumination
Specification
Eastron Europe Part Number
DCM230 1-2-1-1 V2
Functions
DC Energy Meter
Supply Voltage
9-60VDC
Nominal Measurement Range
5-300VDC,5-600VDC,5-1000VDC (See version 1
Maximum Measurement Range
5-1000VDC
Nominal Current Input
Shunt up to 2000Amp See our DC Current Shunt Section for Suitable Shunt
Pulse Output
1 x Configurable 60/100/200ms
Tariff Input
N/A
Accuracy
Class 1 (I,U,kW,kWh)
Mounting
Din Rail
Real Time Clock
1min/month (30ppm)
Internal Memory
N/A
Dimensions
36mm x 100mm x 66mm (2 modules wide)
Isolation
4kV
RS485
2400-38400 b/s
Weight
250g
Certification
EN 61010-1 Installation Category III
Factory Pack Qty
1
Safety
IP51(Indoor)
Enclosure Material
Noryl with fire protection to UL94-V-O. Self extinguishing
Enclosure Size
DIN 42880 4 Modules
Operating Temperature
-20 →+70 °C
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Documents
Product Datasheet
User Manual
Modbus Utility
EEM Meter Setting Software Utility
LEM LF 210-S Series Open Loop AC/DC Hall Effect Sensor
Features
Bipolar and insulated current measurement up tp 420 Amp
Current output
Bandwidth DC to 100kHz
Closed loop (compensated) current transducer
Panel mounting
Insulated plastic case recognized according to UL 94-V0
Advantages
Very good linearity
High accuracy
Low offset drift over temperature
Wide frequency bandwidth
Very low insertion losses
High immunity to external interference
Current overload capability
Low power consumption
Wide dynamic range, 100 to 1000 A in one package.
Applications
Windmill Inverters
Test and Measurement
Substations
AC variable speed drives and servo motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications
Application Domain
Industrial
Standards
EN 50178:1997
IEC61010-1:2010
UL 508:2010
Specification
LEM Part Number
LF 210-S
Technology
Closed Loop Hall Effect
Aperture
ø15.59mm
ROHS
Yes
Supply Voltage
+/- 12 VDC to +/- 15 VDC Bipolar, Isolated
Load Current (RMS + DC)
200 Amp
Measurement Range
+/- 420 Amp
Output
100 mA
Isolation
3.5 kV
Bandwidth
DC-100 kHz
Mounting Style
Panel Mount
Operating Temperature Range
-10°C / 85°C
Accuracy
0.2%
Termination Style
Molex 6410
Unit Weight
75g
Factory Pack Quantity
60
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
LEM LA 55-P Series Closed Loop AC/DC Hall Effect Sensor
Features
Bandwidth DC to 200kHz
Closed loop transducer using Hall effect
Compact and versatile
PCB Mount
Insulated plastic case recognized according to UL 94-V0
Advantages
Very good linearity
High accuracy
Low temperature drift
Wide frequency bandwidth
Very low insertion losses
High immunity to external interference
Current overload capability
Low power consumption
Applications
AC variable speed drives and servo motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications
Water Treatment Electronics
Specification
LEM Part Number
LA55-P
Technology
Closed Loop Hall Effect
Aperture
13.5 x 10mm
ROHS
Yes
Supply Voltage
+/-12..15 VDC Bipolar, Isolated
Load Current (RMS + DC)
50 Amp
Measurement Range
+/-70 Amp
Output
50 mA
Isolation
2.5 kV
Bandwidth
DC-200 kHz
Mounting Style
PCB Mount
Operating Temperature Range
-10°C / 85°C
Accuracy
0.65%
Termination Style
Through Hole PCB
Unit Weight
18g
Factory Pack Quantity
25
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition