LEM HO 250-S/SP33-1106, O/L Hall Effect Current Sensor, 250 Amp, 15 x 8mm Aperture, Vref = 1.65V, Panel Mount Open Loop AC/DC Hall Effect Sensor
Features
Open loop current transducer
Voltage output
Single power supply +3.3 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
Repositionabel 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 250-S/SP33-1106
Technology
Open Loop Hall Effect
Aperture
15 x 8mm
ROHS
Yes
Supply Voltage
3.3 VDC
Load Current (RMS + DC)
250 Amp
Measurement Range
+/-625 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
LEM HO 50-S-0100 Series Open Loop AC/DC Hall Effect Sensor
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
Repositionabel 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 50-S-0100
Technology
Open Loop Hall Effect
Aperture
15 x 8mm
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-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
LEM HTFS 600-P, Open Loop Hall Effect Current Sensor, 600 Amp, 5VDC Supply, PCB Mount, X = 1%
Features
Bandwidth DC to 240kHz
Open loop transducer using Hall effect
Compact and versatile
Uinique PCB Mounting
Insulated plastic case recognized according to UL 94-V0
Advantages
Fixed offset
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
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
HTFS 600-P
Technology
Open Loop Hall Effect
Aperture
ø 22mm
ROHS
Yes
Supply Voltage
5 VDC Bipolar, Isolated
Load Current (RMS + DC)
600 Amp
Measurement Range
+/-900 Amp
Output
1.65Vref
Isolation
2.5 kV
Bandwidth
DC-240 kHz
Mounting Style
PCB Mount (fixation with 4 pins 1mm)
Operating Temperature Range
-40°C / 105°C
Accuracy
1%
Termination Style
PCB
Unit Weight
60g
Factory Pack Quantity
10
Datasheet
Product Datasheet
LEM HO 200-S-0100, O/L Hall Effect AC/DC Current Sensor, 200 Amp, 15 x 8mm Aperture, Vref = 2.5V, 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
Repositionabel 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 200-S-0100
Technology
Open Loop Hall Effect
Aperture
15 x 8mm
ROHS
Yes
Supply Voltage
5 VDC
Load Current (RMS + DC)
200 Amp
Measurement Range
+/-500 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
LEM AHR 2000 B420, Hall Effect Current Transducer, 2000A, 4-20mA True RMS output, 20-50VDC supply
Compact and versatile transducers for high AC and DC currents from 500 to 2000A 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
Split Core
VFD and SCR waveforms current measurement
True RMS output
4-20mA current output
Busbar mounting
Eliminates insertion loss
Isolated plastic case recognised according to UL94-V0
Advantages
Large aperture for cable or busbar up to 104 x 40mm
High isolation between primary and secondary circuits
Easy installation
Applications
-AC Power Supplies or Motors
True RMS sensing - the most accurate way to monitor power supply or input power
-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 and switch mode rectifiers. Current measurement gives faster response than temperature measurement.
-Renewable Energy Installations or Backup Batteries
Continuous condition monitoring allowing automatic failure detection and prediction
-Application Domain
Energy and Automation
Specification
LEM Part Number
AHR 2000 B420
Technology
Open Loop Hall Effect
ROHS
Yes
Supply Voltage
20 - 50V
Nominal Current (RMS + DC)
2000 Amp
Maximum Measurement Current (Peak)
3000 Amp
Output
4-20mA
Isolation
5.8kV (AC, 50Hz, 1 min)
Bandwidth
20-6000Hz
Mounting Style
Panel Mount
Operating Temperature Range
-40°C / 85°C
Accuracy
1%
Termination Style
SFKC 2.5/4-ST-5.08-RF(Phoenix Contact)
Unit Weight
650g
Factory Pack Qty
6
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
2026 LEM Application Guide
LEM DHR 300 C420, Hall Effect Current Sensor, 300Amp , 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 300 C420
Technology
Open Loop Hall Effect
ROHS
Yes
Supply Voltage
20 - 50V
Load Current (RMS + DC)
300 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
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
2026 LEM Application Guide
LEM DHR 1000 C10, Hall Effect Current Sensor, 1000Amp RMS ,10V output, 32mm aperture
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 1000 C10
Technology
Open Loop Hall Effect
ROHS
Yes
Supply Voltage
20 - 50V
Load Current (RMS + DC)
1000 Amp
Output
0-10V
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
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
2026 LEM Application Guide
LEM DHR 100 C420, Hall Effect Current Sensor, 100Amp RMS, 4-20mA output
Compact and versatile transducer, 100Amp AC and DC, True RMS with signal conditioning. 4-20 mA output, 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 100 C420
Technology
Open Loop Hall Effect
ROHS
Yes
Supply Voltage
20 - 50V
Load Current (RMS + DC)
100 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
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
2026 LEM Application Guide
LEM DHR 400 C420, Hall Effect Current Sensor, 400Amp , 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 400 C420
Technology
Open Loop Hall Effect
ROHS
Yes
Supply Voltage
20 - 50V
Load Current (RMS + DC)
400 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
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
2026 LEM Application Guide
RTR Energia EA0525250500000 Power Factor Correction Capacitor, Single Phase, Dry Type 2.5 KVAR, 28.87uF, 525V, 50HZ, 60 x 150mm
Characteristics and utility
2.5 kVar @ 525V @ 50 Hz, 28.87uF.0kvar 10kvar
Discharge resistors Incorporated
Reactive power factor correction
Dry type
Connector type - single sided terminal
Indoor mounting
Safety
Overpressure disconnection system
Protection by internal fuses
Construction and materials
Low losses metallized self-healing polypropylene film, high density, high temperature and greater dielectric resistance Volt/µ
Polyurethane self-extinguishing resin V0, developed under standard UL 94 by RTR Energía
Aluminium case with bottom fixing M12x16
Standards
IEC 60831-1/2
EN 60831-1/2
Specification
RTR Energia Part Number
EA0525250500000
Technology
Dry Type, Low Loss, Self Healing
Dimensions
60 x 150mm
Standards
IEC 60831-1/2, EN 60831-1/2
Voltage
525V @ 50Hz
Kvar
2.5 Kvar
Capacitance
28.87uF
Tolerance On Capacitance
-5% + 10%
Current (In)
4.76 Amp
Overpressure Disconnection System
YES
Self Extinguishing Resin
YES
Internal Fuses
YES
DWCAP system (Patented) internal windings Displacement
YES
Mounting
M12 x 16mm (Indoor)
Operating Temperature Range
50°C Max, 30°C Mean(1 year), 40°C Mean(24 hrs)
Lifetime
120,000 Hours
Termination Style
Filter Type Terminal
Unit Weight
0.5kg
Factory Pack Quantity
25
Datasheet
Product Datasheet
CV 3-200/SP5 Voltage Transducer Flux Gate, Vpn = 140V RMS, 10V output, +/- 15/24VDC supply, 2.5kV Isolation
Features
Bandwidth DC to 700kHz
Closed loop transducer using Flux Gate
Compact and versatile
Panel 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
Voltage overload capability
Low power consumption
Applications
Railway substation or locomotive
High Frequency Drives
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
CV 3-200/SP5
Technology
Closed Loop Hall Effect
Aperture
No Aperture
ROHS
Yes
Supply Voltage
+/-15 VDC Bipolar, Isolated
Primary Nominal Voltage (RMS + DC)
+/- 140V
Measurement Range
+/- 200V
Output
10V @Vp(max)
Isolation
2.5 kV
Bandwidth
DC-700 kHz
Mounting Style
Panel Mount
Operating Temperature Range
-25°C / 75°C
Accuracy
1%
Termination Style
M5 Screw
Unit Weight
650g
Factory Pack Quantity
4
Datasheet
Product Datasheet
Application Notes
LEM Applications Manual 3rd Edition
Iskra Doo MST-25-2.5, 3 Phase Motor Protection Switch
Motor Protection Circuit Breakers are a special type of circuit breaker designed for protection of a wide range of single and 3 phase AC motors against overload and short circuit. Used in industry, small machines, agricultural machines, compressors etc.
Features :
Thermal release
< 50mS Trip Delay Time
3 Pole Disconnect
Short Circuit Breaking Capacity up to 4kA
Voltage resettable version available
Customised versions available
Standards :
IEC/EN 60898,60947-3
IP20 (IP40 Installed) IEC 61008
AS/NZ 61009-1
Specification
Iskra Doo Part Number
MST-25-2.5
Functions
3 Phase Motor Protection Switch
Nominal Voltage
230/400VAC @ 50/60Hz
Nominal Current Range
1.6 - 2.5 Amp RMS
Trip Delay Time
< 50ms
Rated Frequency
50/60 Hz
Operating Temperature
-25 to 60 Deg C
Rated Operations
100,000 Ops
Insulation Voltage
690V
Overload Protection
Thermal Release Only
Breaking Capacity
230V(6kA) 415V(4kA) 500V(2.5kA) 690V(2kA)
Approvals
CSA, EAC
Standards
IEC/EN 60947-2/4-1/5-1, IP20 (IP40 Installed) IEC 61008 ; AS/NZ 61009-1
Weight
230g
Enclosure Material
UL94
Factory Pack Qty
1
Datasheet
Product Datasheet
Alternatives
Trent FGV2 Series