Current Transducer H921

Features

  • Power the sensor, and receive the signal with only 2-wires, lower cabling and commissioning costs than with traditional 3-wire sensors
  • Self-gripping, split-core design for fast retrofit installation, no need to remove conductor
  • Factory calibrated switch-selectable ranges for high resolution and installation ease
  • Three field-selectable ranges per unit, fewer versions to choose from, stock, and install
  • Removable mounting bracket for installation flexibility
  • Added flexibility – bracket on H921 can be installed in three different configurations
  • 100% solid-state no moving parts to fail
  • 30 mA at 12 to 30 VDC sensor power
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Dpstar high voltage output current switches are ideal for automation installers seeking compact and efficient control solutions. These units combine a current switch and relay into a single package, saving space and simplifying control of fans, pumps, and other equipment. The integrated components operate independently, and all relay connections are externally accessible for maximum flexibility. This allows a single unit to handle both start/stop control and status monitoring.

The H921 current transducer provides accurate load trending information with a proportional 4 to 20 mA output signal. Preset slide switches enable quick, jumper-free setup of the sensed amperage range.

Dimensional Drawing


Wiring Diagram

Applications

  • Load trending
  • Motor control
  • Fan/pump status

Specification

Model H921
Application Building Automation Systems
Current Measurement Accuracy  ±2% of F.S. above 10% of F.S.
Current Measurement Range 0 – 30 A | 0 – 60 A | 0 – 120 A
Current Sensor type Current Transducer, AC
Electrical Wiring Size  24 – 14 AWG (0.2 – 2.1 mm²)
Measurement Type  AC Current
Monitored Frequency Range 50 – 60 Hz
Monitored Wire Size 0.8″ (21 mm)
Mounting Split Core
Operating Humidity 10 – 90% RH, non-condensing
Operating Temperature 5 – 140 °F (-15 – 60 °C
Output Specifications 4 – 20 mA
Outputs Analog output
Product Certification UL | CE
Product Type Sensor
Range HX21 Series
Relay Coil Voltage None
Relay Contact Ratings None
Relay Poles/Throw None
Warranty 5 years

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