Current Monitor Relay H548

Features

  • Remote mounted current status sensor and command relay with HOA switch
  • Combines status sensor, command relay and HOA switch in a single series circuit one line connection for three devices
  • Gang box mounting – mounts directly onto gang box, flush to existing enclosures and standalone
  • HOA provides true relay control ideal for troubleshooting control wiring
  • SPST relay is field-selectable for NO or NC operation
  • All models rated up to 1 hp at 120 VAC one product for all fractional HP motor control and status applications
  • Induced from monitored conductor sensor power
  • Relay power LED
  • Status LED indicator
Enquiry
Category:
Love0

Dpstar current monitor relay integrates a current status switch, relay, and HOA (hand-off-auto) switch into a single, industrial-grade solution. Housed in a remote-mounted enclosure, it is ideal for fractional horsepower motor control, monitoring, and fault isolation.

This unit is designed to be wired in series between the motor and power source, allowing all three components to function as an integrated system. The enclosure ensures physical separation between control and high-voltage circuits, with multiple exit paths for wiring flexibility. Installation is supported in 2- or 4-gang junction boxes, field enclosures, or as a standalone unit—ensuring compatibility across diverse industrial setups.

Dimensional Drawing

Wiring Diagram

Applications

  • Monitoring status and controlling small motor loads that are not driven by a motor starter or contactor
  • Exhaust fans
  • Unit ventilators
  • Fan terminal units
  • Fan coil units
  • Recirculating pumps

Specification

Model H548
Application Building Automation Systems
Current Measurement Range  0.25 – 15 A
Current Sensor type Current Transducer, AC, with Relay
Electrical Wiring Size  24 – 14 AWG (0.2 – 2.1 mm²)
Hand-Off-Auto  Yes
Measurement Type  AC Current
Monitored Wire Size 50 – 60 Hz
Mounting 4 x 4 Box
Operating Humidity 10 – 90% RH, non-condensing
Operating Temperature 5 – 122 °F (-15 – 50 °C)
Output Specifications N.O. 1 A @ 30 VAC/DC
Outputs Switch output | Relay
Product Certification UL
Product Type Sensor
Range Motor Control Series
Relay Coil Voltage 24 VAC/DC
Mechanical
Relay Contact Ratings Resistive: 15 A @ 277 VAC | Motor: 1 H.P. @ 120 VAC
Relay Poles/Throw SPST
Setpoint Fixed
Warranty 5 years

Ordering Information

Related products