LEM HTB 200-P Series Closed Loop AC/DC Hall Effect Sensor
Features
Open loop hall effect current transducer
Voltage output
Single supply +/- 12..15VDC
Galvanic separation between primary and secondary circuit
Low power consumption
For PCB mounting
Aperture: Ø16mm
Factory calibrated
Advantages
Low offset drift
Large Aperture
Fast response
Applications
AC variable speed 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
Combiner box
Solar inverter on DC side of the inverter (MPPT).
Standards
IEC 61800-3: 2004
Application Domain
Industrial.
Specification
LEM Part Number
HTB 200-P
Technology
Open Loop Hall Effect
Aperture
Ø 16mm
ROHS
Yes
Supply Voltage
+/-12..15V VDC
Load Current (RMS + DC)
200 Amp
Measurement Range
+/-500 Amp
Output
+/- 4V
Isolation
5.4 kV
Bandwidth
DC-50 kHz
Mounting Style
PCB Mount
Operating Temperature Range
-20°C / 80°C
Accuracy
1%
Termination Style
PCB
Unit Weight
36g
Factory Pack Quantity
10
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Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
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LEM HAT 1200-S O/L Hall Effect Current Transducer, 1200 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 1200-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)
1200 Amp
Measurement Range
+/-2500 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 HLSR 50-P Series Open Loop AC/DC Hall Effect Sensor
Features
Open loop current transducer
Voltage output
4.3kV Isolation
Frequency bandwidth 400kHz
Single supply + 5 V
Galvanic isolation between primary and secondary
Low power consumption
Compact design for THT PCB mounting
Factory calibrated.
Advantages
Extremely low profile: h = 12mm
Low foot-print
Low offset drift
Over-drivable VREF
Applications
AC variable speed 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
Combiner box
MPPT
Standards
EN 50178: 1997
UL 508: 2004 - UR marking pending
IEC 61326-1: 2012
IEC 61010-1: 2010 (safety)
Application Domain
Industrial
Specification
LEM Part Number
HLSR 50-P
Technology
Open Loop Hall Effect
Aperture
None
ROHS
Yes
Supply Voltage
5 VDC
Load Current (RMS + DC)
50 Amp
Measurement Range
+/-125 Amp
Output
2.5 Vref
Isolation
4.3 kV
Bandwidth
DC-400 kHz
Mounting Style
PCB Mount
Operating Temperature Range
-40°C / 105°C
Accuracy
1%
Termination Style
PCB
Unit Weight
5g
Factory Pack Quantity
25
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
LEM HOP 1500-SB O/L Split Core Hall Effect Current Sensor, 1500 Amp, +/-4V Output, 40 x 104mm Aperture, +/-12..15V Supply, Panel Mount, X = 2% Open Loop AC/DC Hall Effect Sensor
Features
Bandwidth DC to 10kHz
Open loop transducer using Hall effect
Compact and versatile
Panel mounting-Horizontal or Vertical or Busbar Mounting
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 500 to 2000 A in one package.
Up to 3000 A measurement range
Applications
Power supplies for TELECOM (monitoring and measurement)
Electrical chemistry
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications.
Chopper
Battery supplied applications
Specification
LEM Part Number
HOP 1500-SB
Technology
Open Loop Hall Effect
Aperture
104 x 40mm Square
ROHS
Yes
Supply Voltage
+/-12..15 VDC Bipolar, Isolated
Load Current (RMS + DC)
1500 Amp
Measurement Range
+/-3000 Amp
Overload Rating
Contact Us for Possible Replacement
Output
+/-4 V
Isolation
3 kV
Bandwidth
DC-10 kHz
Mounting Style
Panel Mount/Busbar Mount
Operating Temperature Range
-25°C / 70°C
Accuracy
2%
Termination Style
Molex 5045-04A
Unit Weight
590g
Factory Pack Quantity
4
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
LEM ART-B22-D300-SP4 + AI-PMUL, Single Phase Rogowski Coil Set, Class 1, User Selectable 0.333v, 0.166v, True RMS 4-20mA, 0-20mA, 0-10V, 0-5V Outputs, Sensitivity, and Measurement Range, 30cm Diameter
The universal Rogowski coil integrator AI-PMUL complements LEM’s flexible clip-around coil ART and ARU range. The design is based on digital processing to give combined dynamic range, accuracy and versatility of use. It offers a wide range of output signals both RMS and instantaneous. AI-PMUL is DIN rail mounted and can be stacked for multiphase application without spacing thanks to its low power dissipation.
Input signal
Accuracy Class 1 (IEC 61869-2) [1].
Linearity error ≤ 0.10 %. Protection degree IP2X.
35 mm DIN rail mounted.
Push-in terminals.
4 selectable true RMS output signals: 0…20 mA, 4…20 mA, 0…5 V, 0…10 V.
2 selectable instantaneous output signals: 225 mV, 333 mV.
6 selectable sensitivities depending on Rogowski coil: 22.5, 70, 80, 85, 100, 120 mV/kA at 50 Hz.
12 selectable ranges: 100, 200, 300, 400, 500, 600, 800, 1000, 1500, 2000, 4000, 5000 A.
Ambient operating temperature −25...+70 °C.
Advantages
Compact design for DIN rail assembly
High accuracy Class 1 (IEC 61869-2)
Setup by user via Select / Edit buttons
Clear status indication via bi-color led
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
UL
EMC: IEC 61326-1:2012
Options
Cross Power Plug-in: side contacts to stack up to 3 Integrator modules and use only one power supply.
Specification
LEM Part Number
ART-B22-D300-SP4 + AI-PMUL
Function
Single Phase AC Current Measurement
Measuring Range
Selectable 5000,4000,2000,1500,1000,800,600,500,400,300,200,100Amp
Sensitivity
Selectable 22.5,70,80,85,100,120mV/kA @ 50 Hz
Output
Selectable; Signal Conditioned True RMS 0-20mA, True RMS 4-20mA, True RMS 5V, True RMS 10V or 225mV, 333mV Direct Output (1 Amp output coming soon)
Frequency Measuring Range
50-1500Hz (15th Harmonic)
Operating Voltage
10-32VDC
Accuracy
1% from 25 to 5000 Amp
Current Consumption
100mA (max)
Dimensions
100mm x 78mm x 15mm (Integrator), 30cm Diameter (Coils)
Mounting
Din Rail Mount
Integrator to Coil cable
4.5M Twisted and Screened
Integrator to Meter cable
User Supplied Shielded cable 1.5mm sqr, up to 6m long
Operating Temperature
-25°C - 70°C
Storage Temperature
-45°C to 80°C
Isolation (50Hz, 1 min)
1.5kV
True RMS Response Time
160-190ms
Termination Style
Push-in for 1.5mm sqr wire
Weight
58g
Factory Pack Qty
1
Certifications
Â
UL, ROHS
Datasheet
AI-PMUL Datasheet
ART Series Datasheet
Application Notes
User Notice
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 modelling 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.
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LEM ART-B22-D70-SP3, AC Measurement Rogowski Coils (coil only). 7cm 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 12.5cm 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-D70-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 (?)
7cm
Coil Circumference
22cm
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
300,000 Amp
Termination Style
2 Stripped Wires
Weight
130g
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.
LEM HO 150-S-0100, O/L Hall Effect Current Sensor, 150 Amp, 15 x 8mm Aperture, Panel Mount
Features
Open loop current transducer
Voltage output
Single power supply +5 V
Overcurrent detect 2.93 × IP N (peak value)
Galvanic separation between primary and secondary circuit
Low power consumption
Factory calibrated
Compact design for panel mounting
Aperture: 15 × 8 mm
Factory calibrated
Repositionable mounting foot
Dedicated parameter settings available on request
Advantages
Low offset drift
Over-drivable Vref
Creepage / clearance > 8 mm
Fast response
Applications
AC variable speed 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
Combiner box
Solar inverter on DC side of the inverter (MPPT).
Standards
IEC 61800-1: 1997
IEC 61800-2: 2015
IEC 61800-3: 2004
IEC 61800-5-1: 2007
IEC 62109-1: 2010
UL 508: 2013.
Application Domain
Industrial.
Specification
LEM Part Number
HO 150-S-0100
Technology
Open Loop Hall Effect
Aperture
15 x 8mm
ROHS
Yes
Supply Voltage
5 VDC
Load Current (RMS + DC)
150 Amp
Measurement Range
+/-325 Amp
Output
2.5 Vref
Isolation
4.3 kV
Bandwidth
DC-100 kHz
Mounting Style
Panel Mount
Operating Temperature Range
-40°C / 105°C
Accuracy
1%
Termination Style
JST B5B-PH type
Unit Weight
32g
Factory Pack Quantity
25
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
Eastron Europe ESCT-RJ335-200A/100mA, 3 Phase Current Transformer, Class 1, 0.5VA 200 Amp, 100mA Output, Panel Mount
Features
RJ12 EasyClick CT Connections to suit EasyClick SDM630MCT-ML Series
1M RJ12 Cable Supplied
Mounting Feet Supplied
Self Powered
Rated System Voltage 0.72/3kV
IEC185, BS 7626, BSEN 60044-1 and IEC 60044-1
Applications
Metering Equipment
Energy Monitoring
AC Power Control Systems
Power Factor Correction
Power Quality Measurements
Specification
Eastron Part Number
ESCT-RJ335-200A/100mA
Technology
3 Phase AC Current Transformer
Ratio
200/100mA
Aperture Size
21 x 25mm
VA Rating
0.5VA
Accuracy Class
Class 1
Output
100mAmp AC (+20%)
Isolation
3kV (AC, 50Hz, 1 min)
Bandwidth
50-60Hz
Mounting Style
Panel Mount
Operating Temperature Range
-30°C / 85°C
Continuous Current (max)
200Amp x 1.2
Termination Style
RJ12
Unit Weight
650g
Factory Pack Qty
9
Datasheet
Product Datasheet
LEM AT 5 B10, AC Current Transformer, Self Powered, 5 Amp Average RMS 0-10V output
Features
Split Core
0-10V Average RMS Current Output
Cable Mounting
Self Powered
Isolated plastic case recognised according to UL94-V0
Advantages
Large aperture for cable up to ? 16mm
High isolation between primary and secondary circuits
Easy installation
Applications
Current Measurement
Energy Management
Motor Control
Actuators
Lamp Failure
Specification
LEM Part Number
AT 5 B420L
Technology
AC Current Transformer
Protection Class
IP50
Supply Voltage
Self Powered
Load Current (RMS)
5 Amp
Maximum Measurement Current (RMS)
6 Amp
Output
0-10V (Average RMS)
Isolation
3.5kV (AC, 50Hz, 1 min)
Bandwidth
45 - 65Hz
Mounting Style
Din Rail Mount
Operating Temperature Range
-10°C / 65°C
Accuracy
1.5%
Aperture
? 16mm
Termination Style
Screw
Approvals
CE,UL,ROHS
Unit Weight
90g
Factory Pack Qty
6
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Datasheet
Product Datasheet
LEM HOP 800-SB O/L Split Core Hall Effect Current Sensor, 800 Amp, +/-4V Output, 40 x 104mm Aperture, +/-12..15V Supply, Panel Mount, X = 2% Open Loop AC/DC Hall Effect Sensor
Features
Bandwidth DC to 10kHz
Open loop transducer using Hall effect
Compact and versatile
Panel mounting-Horizontal or Vertical or Busbar Mounting
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 500 to 2500 A in one package.
Up to 3000 A measurement range
Applications
Power supplies for TELECOM (monitoring and measurement)
Electrical chemistry
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications.
Chopper
Battery supplied applications
Specification
LEM Part Number
HOP 800-SB
Technology
Open Loop Hall Effect
Aperture
104 x 40mm Square
ROHS
Yes
Supply Voltage
+/-12..15 VDC Bipolar, Isolated
Load Current (RMS + DC)
800 Amp
Measurement Range
+/-1600 Amp
Overload Rating
Contact Us for Possible Replacement
Output
+/-4 V
Isolation
3 kV
Bandwidth
DC-10 kHz
Mounting Style
Panel Mount/Busbar Mount
Operating Temperature Range
-25°C / 70°C
Accuracy
2%
Termination Style
Molex 5045-04A
Unit Weight
590g
Factory Pack Quantity
4
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Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
2026 LEM Application Guide
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LEM HOP 500-SB O/L Split Core Hall Effect Current Sensor, 500 Amp, +/-4V Output, 12.5 x 41mm Aperture, +/-12..15V Supply, Panel Mount, X = 2% AC/DC Hall Effect Sensor
Features
Bandwidth DC to 8kHz
Open loop transducer using Hall effect
Compact and versatile
Panel mounting-Horizontal or Vertical or Busbar Mounting
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 200 to 600 A in one package.
Up to 900 A measurement range
Applications
Power supplies for TELECOM (monitoring and measurement)
Electrical chemistry
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications.
Chopper
Battery supplied applications
Specification
LEM Part Number
HOP 500-SB
Technology
Open Loop Hall Effect
Aperture
12.5 x 41mm Square
ROHS
Yes
Supply Voltage
+/-12..15 VDC Bipolar, Isolated
Load Current (RMS + DC)
500 Amp
Measurement Range
+/-1000 Amp
Overload Rating
Contact Us for Possible Replacement
Output
+/-4 V
Isolation
3 kV
Bandwidth
DC-10 kHz
Mounting Style
Panel Mount/Busbar Mount
Operating Temperature Range
-25°C / 70°C
Accuracy
2%
Termination Style
Molex 5045-04A
Unit Weight
590g
Factory Pack Quantity
4
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Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
2026 LEM Application Guide
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LEM AT 10 B5, Split Core AC Current Transformer, Self Powered, 10 Amp Average RMS 0-5V output
Features
Split Core
0-5V Average RMS Output
Cable Mounting
Self Powered
Isolated plastic case recognised according to UL94-V0
Advantages
Large aperture for cable up to ? 16mm
High isolation between primary and secondary circuits
Easy installation
Applications
Current Measurement
Energy Management
Motor Control
Actuators
Lamp Failure
Specification
LEM Part Number
AT 10 B5
Technology
AC Current Transformer
Protection Class
IP50
Supply Voltage
Self Powered
Load Current (RMS)
10 Amp
Maximum Measurement Current (RMS)
Output
0-5V (Average RMS)
Isolation
3.5kV (AC, 50Hz, 1 min)
Bandwidth
55 - 65Hz
Mounting Style
Din Rail Mount
Operating Temperature Range
-10°C / 65°C
Accuracy
1.5%
Aperture
? 16mm
Termination Style
Screw
Approvals
CE,UL,ROHS
Unit Weight
90g
Factory Pack Qty
6
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Datasheet
Product Datasheet