HO 150-SW-0000 , HO150-SW-0000

LEM HO 150-SW-0000 HO-SW Series Open Loop Hall Effect Current Transducer

LEM HO 150-SW-0000 Product Overview

The HO 150-SW-0000 is an open-loop Hall effect current transducer from LEM's HO-SW Series, designed for the electronic measurement of DC, AC, and pulsed currents with galvanic isolation between the primary and secondary circuits. This panel-mount transducer outputs a 1-bit digital Pulse Density Modulation (PDM) bitstream via an integrated sigma-delta modulator, enabling direct interface with digital control systems . Please note: This product has been declared Obsolete by the manufacturer .

Rated for 150 A nominal with a measuring range of ±375 A (2.5 × IPN) , the device provides up to 12-bit resolution and a bandwidth of 20 kHz . Supply voltage range is 4.5 V to 5.5 V with a maximum current consumption of 31 mA . The total accuracy (sum of sensitivity and linearity) is ±1.7% at 25°C and ±5.2% at 105°C, with linearity of ±0.5% . Operating temperature ranges from -40°C to +105°C . Insulation features reinforced insulation with >8 mm creepage and clearance distances, 4.3 kV RMS insulation test voltage, and 8 kV impulse withstand voltage .

LEM HO 150-SW-0000 Key Specifications

LEM HO 150-SW-0000 Key Advantages

The HO 150-SW-0000 employs open-loop Hall effect technology with ASIC signal conditioning, delivering ±1.7% total accuracy and ±0.5% linearity while providing reinforced galvanic isolation with >8 mm creepage and clearance . The digital PDM bitstream output with integrated sigma-delta modulator provides up to 12-bit resolution for direct interface with digital control systems, eliminating the need for external ADC conversion .

A key feature is the dedicated overcurrent detection (OCD) output on a separate open-drain pin, with a detection threshold of 2.97 × IPN (peak value, ±10%), enabling fast system-level protection without additional circuitry . The single +5 V supply simplifies integration into low-voltage digital systems. The panel-mount design with 15 x 8 mm aperture offers low power consumption (31 mA maximum), high immunity to external interference, and no insertion losses. The device is factory calibrated and features 8 mm creepage/clearance with reinforced insulation for up to 600 V CAT III applications .

LEM HO 150-SW-0000 Typical 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
Combiner box and MPPT systems
Renewable energy systems

Why Choose the LEM HO 150-SW-0000?

The HO 150-SW-0000 combines a 150 A rated current and ±375 A measuring range with digital PDM bitstream output in a compact panel-mount package with a single +5 V supply. Manufactured by LEM, it delivers stable, accurate, and safe current measurement for industrial applications requiring digital interfaces. The open-loop Hall effect design offers a cost-effective solution with overcurrent detection, excellent interference immunity, and panel mounting flexibility. The wide -40°C to +105°C operating temperature range and reinforced insulation ensure reliable performance in demanding environments. Please note that this product is obsolete (end of life) and not recommended for new designs .