LES, LESR, LKSR, LPSR, LXS, LXSR Family

Closed Loop Hall effect current sensors performing at the level of Fluxgate technology without the added cost.

LES, LESR, LKSR, LPSR, LXS, LXSR - Current Sensors

The LES, LESR, LKSR, LPSR, LXS, and LXSR series consist of current sensors meticulously crafted for the electronic measurement of DC, AC, and pulse small currents, ranging from 1.5 to 50 Arms nominal (including models at 6A, 15A, 25A, and 50A), with galvanic isolation.

These product lines boast features such as low offset drift and primary integrated conductors, ensuring reliable performance across a wide temperature range from -40°C to +105°C.

In addition, the LESR, LKSR, LPSR, and LXSR components offer reference access on an additional pin. Furthermore, both LPSR and LKSR parts feature a distinct primary footprint with 4 pins, enhancing creepage and clearance distances to 9.9 mm for superior insulation. The LPSR model includes an exclusive feature with overcurrent detection output.

It is worth noting that this product series seamlessly integrates with CAS, CASR, and CKSR sensors, as well as LTS and LTSR Series, ensuring compatibility and flexibility in various applications.

Primarily designed for industrial use, the LES, LESR, LKSR, LPSR, LXS, and LXSR series leverage closed loop hall effect technology, delivering performance akin to Fluxgate technology but without the associated added cost.

LES, LESR, LKSR, LPSR, LXS, LXSR – Features and benefits

LES, LESR, LKSR, LPSR, LXS, LXSR current sensors

Main characteristics

Closed loop multi-range current sensor
Voltage output
Unipolar supply voltage
Compact design for PCB mounting
Cost attractive
PCB mounting in various footprints (3 or 4 primary pins with various layouts)
With aperture and/or integrated primary conductors
Compact design
High overall accuracy at +105°C up to 2%

Benefits

Very low offset drift
Very good dv/dt immunity
Fast response time <0.4 µs
CAS footprint compatible (LES)
CASR footprint compatible (LESR)
CKSR footprint compatible (LKSR)
LTS footprint compatible (LXS)
LTSR footprint compatible (LXSR)

All product families except LES offer an extended measuring range for unipolar measurement. Specifically, LESR, LKSR, LPSR, and LXSR feature a reference pin with two modes: Ref IN and Ref OUT.

Typical applications

LES, LESR, LKSR, LPSR, LXS, and LXSR products are specifically crafted for industrial applications, serving diverse purposes such as:

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
Solar inverters

LEM LES, LESR, LKSR, LPSR, LXS, LXSR – Download & Technical Characteristic

LES Series

Product	Document	Primary nominal RMS voltage	Secondary Nominal Signal Value	Op. Temperature
LES 6-NP	Datasheet 3D	6 A	2.5 +/- 0.625 V	-40 to 105°C
LES 15-NP	Datasheet 3D	15 A	2.5 +/- 0.625 V	-40 to 105°C
LES 25-NP	Datasheet 3D	25 A	2.5 +/- 0.625 V	-40 to 105°C
LES 50-NP	Datasheet 3D	50 A	2.5 +/- 0.625 V	-40 to 105°C

LESR Series

Product	Document	Primary nominal RMS voltage	Secondary Nominal Signal Value	Op. Temperature
LESR 6-NP	Datasheet 3D	6 A	2.5 +/- 0.625 V	-40 to 105 °C
LESR 6-NP/SP1	Datasheet 3D	6 A	2.5 +/- 0.625 V	-40 to 105 °C
LESR 15-NP	Datasheet 3D	15 A	2.5 +/- 0.625 V	-40 to 105 °C
LESR 15-NP/SP1	Datasheet 3D	15 A	2.5 +/- 0.625 V	-40 to 105 °C
LESR 25-NP	Datasheet 3D	25 A	2.5 +/- 0.625 V	-40 to 105 °C
LESR 25-NP/SP1	Datasheet 3D	25 A	2.5 +/- 0.625 V	-40 to 105 °C
LESR 50-NP	Datasheet 3D	50 A	2.5 +/- 0.625 V	-40 to 85°C
LESR 50-NP/SP1	Datasheet 3D	50 A	2.5 +/- 0.625 V	-40 to 85°C

LKSR Series

Product	Document	Primary nominal RMS voltage	Secondary Nominal Signal Value	Op. Temperature
LKSR 6-NP	Datasheet 3D	6 A	2.5 +/- 0.625 V	-40 to 105 °C
LKSR 15-NP	Datasheet 3D	15 A	2.5 +/- 0.625 V	-40 to 105 °C
LKSR 25-NP	Datasheet	25 A	2.5 +/- 0.625 V	-40 to 105 °C
LKSR 50-NP	Datasheet	50 A	2.5 +/- 0.625 V	-40 to 105 °C

LPSR Series

Product	Document	Primary nominal RMS voltage	Secondary Nominal Signal Value	Op. Temperature
LPSR 6-NP	Datasheet 3D	6 A	2.5 +/- 0.625 V	-40 to 105 °C
LPSR 15-NP	Datasheet	15 A	2.5 +/- 0.625 V	-40 to 105 °C
LPSR 25-NP	Datasheet	25 A	2.5 +/- 0.625 V	-40 to 105 °C
LPSR 50-NP	Datasheet	50 A	2.5 +/- 0.625 V	-40 to 105 °C

LXS Series

Product	Document	Primary nominal RMS voltage	Secondary Nominal Signal Value	Op. Temperature
LXS 6-NPS	Datasheet 3D	6 A	2.5 +/- 0.625 V	-40 to 105 °C
LXS 15-NPS	Datasheet	15 A	2.5 +/- 0.625 V	-40 to 105 °C
LXS 25-NPS	Datasheet	25 A	2.5 +/- 0.625 V	-40 to 105 °C

LXSR Series

Product	Document	Primary nominal RMS voltage	Secondary Nominal Signal Value	Op. Temperature
LXSR 6-NPS	Datasheet 3D	6 A	2.5 +/- 0.625 V	-40 to 105 °C
LXSR 15-NPS	Datasheet	15 A	2.5 +/- 0.625 V	-40 to 105 °C
LXSR 25-NPS	Datasheet	25 A	2.5 +/- 0.625 V	-40 to 105 °C

LES, LESR, LKSR, LPSR, LXS, LXSR Sensors – ASK FOR SAMPLES / QUOTATIONS

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