Hall Effect HOYS-S Series by LEM

Open loop Hall effect, 100 – 560A

Product Description

The HOYS-S by LEM is an open loop Hall effect device designed for the electronic measurement of DC, AC and pulsed currents with galvanic separation between the primary and secondary circuits.

The HOYS-S has primary ratings of 100 – 560A and can measure up to 1400A DC or AC.  A single +5Vdc power supply is required to provide power.  The HOYS-S Hall effect current transducer is 1 – 1.25% accurate (depends on the nominal rating).  It outputs 2.5V at 0A.  It outputs 3.3 V at the rated current (positive) and 1.7V at the rated current (negative).

The HOYS-S can measure DC current and pulsed currents, as well AC frequencies up to 180 kHz (-3 dB).  It has a fast response (~3 µS) and low offset drift.  These devices have been evaluated for over voltage category III and pollution degree 2 environments.

Note that the HOYS-S (when ordered from Aim Dynamics) ships with the mating connector!  There is no need to try and specially order the connector, only to get the wrong one, delay your project, etc. If you are looking for this product with a higher amperage rating see the HOYL-S models.


  • Open loop multi-range current transducer
  • 0.8 V output
  • DC ~ 180 kHz frequency range (-3 dB)
  • 1 – 1.25% Accuracy
  • 0.5 – 0.75 % Linearity
  • Single power supply +5 V
  • Overcurrent detect 2.93 × IPN (peak value)
  • Galvanic separation between primary and secondary circuit
  • Low power consumption
  • For busbar mounting
  • Aperture: 21.5 × 13 mm
  • Factory calibrated
  • Connection mating with JST:
    • housing PAP-05V-S
    • contact SPHD-00xT-P0.5
  • Low offset drift
  • Over-drivable Vref
  • Creepage /clearance > 10.5 mm
  • Fast response
  • Low profile 2 mm pitch connector for 22 to 28 AWG wire
  • UL Recognized

Technical Specs

HOYS-S Series Technical Specs


  • 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)


  • IEC 61800-2: 2015
  • IEC 61800-3: 2004
  • IEC 61800-5-1: 2007
  • IEC 62109-1: 2010
  • UL 508: 2013



ISO 9001

rohs compliant

Additional information

Weight.1 lbs
Dimensions3 x 2 x 1 in
Amp Rating

100, 200, 500