LKSR Series Closed-Loop Hall Effect Current Sensors

LEM LKSR series sensors are an optimal choice for industrial applications requiring high accuracy, reliability, and cost-effectiveness

Image of LEM USA LKSR Series Closed-Loop Hall Effect Current SensorsLEM LKSR series high-precision current sensors are designed to accurately measure DC, AC, and pulse small currents ranging from 1.5 ARMS to 50 ARMS, nominal, all with galvanic isolation. These sensors ensure reliability with key features such as low offset drift for stable, high-accuracy measurements, integrated primary conductors for simplified design and enhanced performance, and a wide operating temperature range from -40°C to +105°C.

The LKSR series is engineered with a unique 4-pin primary footprint, extending creepage and clearance distances to 9.9 mm for superior insulation and safety. It also features reference access on an additional pin for improved usability and seamless compatibility with CKSR sensors, ensuring broad applicability in industrial environments.

Built on closed-loop Hall effect technology, LKSR sensors deliver precision comparable to Fluxgate technology but with significant cost advantages. This makes the LKSR series an optimal choice for industrial applications requiring high accuracy, reliability, and cost-effectiveness.

Features
  • Voltage output
  • Unipolar supply voltage
  • Compact design for PCB mounting in various footprints
  • With aperture and/or integrated primary conductors
  • Compact design
  • High overall accuracy at +105°C up to 2%
  • Very low offset drift
  • Very good dv/dt immunity
  • Fast response time <0.4 µs
  • CKSR footprint compatible
  • Extended measuring range for unipolar measurement
  • Reference pin with two modes: Ref IN and Ref OUT
Applications
  • AC variable speed and servo motor drives
  • Static converters for DC motor drives
  • Battery supplied applications
  • Uninterruptible power supplies
  • Switched-mode power supplies
  • Power supplies for welding applications
  • Solar inverters

LKSR Series Closed-Loop Hall Effect Current Sensors

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
CURRENT SENSOR HE/CL 50ALKSR 50-NPCURRENT SENSOR HE/CL 50A294 - Immediate$25.57View Details
CURRENT SENSOR HE/CL 15ALKSR 15-NPCURRENT SENSOR HE/CL 15A78 - Immediate$21.53View Details
CURRENT SENSOR HE/CL 25ALKSR 25-NPCURRENT SENSOR HE/CL 25A251 - Immediate$23.05View Details
CURRENT SENSOR HE/CL 6ALKSR 6-NPCURRENT SENSOR HE/CL 6A62 - Immediate$24.18View Details
Published: 2025-04-08