AC Current (RMS) Sensor S434


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  • Removable Yoke
  • 1.50” Diameter Thru-hole
  • Isolated Measurement
  • ±1.0% Accuracy
  • 5:1 Crest Factor Capability
  • Moisture and Humidity Resistant
  • Low Power (20mA Maximum)
  • Reverse Polarity & Short Circuit Protection
  • Output Transient Protection
  • 10 Standard Current Ranges

Product Description

Model S434 AC Current (RMS) Sensor provides an isolated 0 to +5Vdc output proportional to the AC RMS input current. The sensors have an input current range from 0Aac to 200Aac, and the sensors withstand, without performance degradation or damage, a continuous overload of twice full-scale, or ten-times full-scale for 10 seconds.

The S434 Series delivers performance accuracy over a temperature range from -40°C to +75°C and measures input current with a frequency range from 57 to 63Hz, with Crest Factors up to 5.  The sensors are powered with a supply voltage from +24Vdc to +32Vdc and operate within the specified input/ output requirements with ±100Adc on the AC Current Input.  The unit’s molded construction, with internal components encapsulated, creates a durable sensor, withstanding environments of moisture.

The S434 AC Current (RMS) Transducer comes standard with a 1.50” (3.81cm) removable yoke, allowing for uninterrupted operation installation, which makes this sensor excellent for existing or retro-fit applications, as well as moveable multi-point monitoring. The sensors are available with a connector interface, available with mating connector.

The S434 Series was developed for a Power Station Application: Geomagnetic Induced Current Monitoring (GIC), due to an increase in the solar flare activity cycle.


  • Power Stations – Geomagnetic Induced Current (GIC ) Monitoring
  • Traction Power Measuring
  • AC Load Current Monitoring
  • Charging System Monitoring
  • Motor Current Measuring
  • Fault and Overload Current Monitoring

Additional information

Weight 16 oz
Dimensions 3 × 3 × 2 in


Current Range


Supply Type

Housing Material

Input Diameter

Supply Voltage



Frequency Range

57 to 63Hz

Crest Factor


  • Attitude: Works in any mounting position.
  • Mate Connector: TYPE PT06A-10-6S or equivalent mating connector.