LESR Current Transducers

LEM LESR Current Transducers are designed for high-precision electronic measurement of DC, AC, and small pulse currents, with galvanic isolation for enhanced safety and reliability. These transducers feature low offset drift and integrated primary conductors to ensure consistent performance. The LESR current transducers provide greater flexibility for system integration and seamlessly integrate with CASR sensors, ensuring compatibility across a broad range of industrial applications. These transducers deliver performance at a lower cost by leveraging closed-loop Hall effect technology. Typical applications include AC variable speed and servo motor drives, static converters for DC motor drives, battery-supplied devices, and Uninterruptible Power Supplies (UPS).

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Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Current Rating
Sensor Type
Response Time
Accuracy
Frequency Range
Operating Supply Voltage
Output Type
LEM Board Mount Current Sensors Current Transducer LESR series. For the electronic measurement of current: DC, AC, pulsed..., with galvanic separation betweenthe primary and the secondary circuit.
Datasheet
237In Stock
Min.: 1
Mult.: 1

50 A Closed Loop 400 ns 0.7 % 300 kHz 5 V Digital, Analog
LEM Board Mount Current Sensors Current Transducer LESR series. For the electronic measurement of current: DC, AC, pulsed..., with galvanic separation betweenthe primary and the secondary circuit.
Datasheet
118In Stock
200Expected 30/09/2026
Min.: 1
Mult.: 1

15 A Closed Loop 400 ns 0.75 % 300 kHz 5 V Digital, Analog
LEM Board Mount Current Sensors Current Transducer LESR series. For the electronic measurement of current: DC, AC, pulsed..., with galvanic separation betweenthe primary and the secondary circuit.
Datasheet
65In Stock
200Expected 20/08/2026
Min.: 1
Mult.: 1

25 A Closed Loop 400 ns 0.85 % 300 kHz 5 V Digital, Analog
LEM Board Mount Current Sensors Current Transducer LESR series. For the electronic measurement of current: DC, AC, pulsed..., with galvanic separation betweenthe primary and the secondary circuit.
Datasheet
81In Stock
200Expected 22/07/2026
Min.: 1
Mult.: 1

6 A Closed Loop 400 ns 0.75 % 300 kHz 5 V Digital, Analog
LEM Board Mount Current Sensors
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 200
Mult.: 200
15 A Closed Loop 400 ns 1.8 % 300 kHz 5 V Digital, Analog
LEM Board Mount Current Sensors
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 200
Mult.: 200
25 A Closed Loop 400 ns 1.15 % 300 kHz 5 V Digital, Analog
LEM Board Mount Current Sensors
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 200
Mult.: 200
50 A Closed Loop 400 ns 1.05 % 300 kHz 5 V Digital, Analog
LEM Board Mount Current Sensors
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 200
Mult.: 200
6 A Closed Loop 400 ns 1.8 % 300 kHz 5 V Digital, Analog