PR300 Series

3-Display Multi-function Power Monitors


  • Analog output function
  • Demand measurement
  • Compatible with ANSI 4-inch round form size and DIN 96-square instrument size
  • Standard equipped with an RS-485 communication function and capable of Ethernet communication
  • UL/CE certified multi-function Power and Energy Meter
  • Universal mounting is a standard feature
  • ANSI 4” switchboard mounting
  • DIN96 panel mounting


Panel-mounted power and energy meter with a large, three-row LED display integrates all the measuring functions required for power management in substations, factories, process plants and office buildings. PR300 users are interested in allocation of energy costs, conservation of energy and overall electrical system reliability.

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Other benefits of using the PR300 are reduction of panel space and wiring due to multi-functional capability, and access to LANs for centralized monitoring of power usage and demand.

  • Literature
  • Specifications
Literature and Technical Information
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Panel Instrumentation

++ PR300 Series | Specifications
Display: 3x – 7-segment LED as its display.
Digit height: 0.56” high digits
Color: Red
Range: -99999 to +99999
Number of Digits: 5 digits
Measuring Function: Accuracy:
Active energy/optional active energy (Wh): 0.5% (EN60687 accuracy: Class 0.5 or equivalent)
Active power : ±0.5% of F.S.
Voltage (V) : ±0.25% of F.S. (voltage rms)
Current (A) : ±0.25% of F.S. (current rms)
Frequency : ±0.5Hz
Demand : ±0.5%
Insulation resistance: 100 MΩ minimum (at 500 V DC)
Withstand voltage: 2500 V AC for 1 minute
output -1000 V AC for 1 minute
Impulse withstand voltage: 6 kV (1.2/50 ms), 10 times for positive and negative
Analog Output
Allowable load resistance : 0 to 600 Ω
Output Signal : 4 to 20 mA DC
Output Accuracy: Measurement accuracy of measurement item for output +(!0.5% of F.S.)
Response speed: Within 2 seconds (!1% of final value)
Pulse Output:
Measurement item for output: One of active energy, regenerative energy, LEAD reactive energy, LAG reactive energy, and apparent energy
No. of outputs: 1
Output signal: Open collector
Contact capacity: 30 V DC, 200 mA
Pulse unit: 0.1 to 5000.0 kWh/pulse (changeable in increments of 100 Wh)
Demand Alarms :
Output signal: Open collector
Contact capacity: 30 V DC, 200 mA
Set alarm range; 1 to 1000 kW (during demand power measurement); 1 to 1000 A (during demand current measurement)
Ethernet:-Serial gateway function: 10BASE-T/100BASE-TX
Serial Bus: RS-485 communication
Protocol: Modbus/TCP function
IP address: The IP address can be set using the operation keys on the front side of the PR300.
Safety standards: Compliant with IEC/EN61010-1 Under application for UL611010 approvale
Power source: 100 to 240 V AC/DC !10%
Operating Power 0 to 50°C (reference temperature: 23!2°C)
Storage Temp. : -20 to 70°C
Ambient humidity: 20 to 90% RH (no condensation)
Case: Polycarbonate resin (PC), UL94 V-0 Dustproofness and dripproof IP5X
Terminal block: Polybutylene terephthalate (PBT), UL94 V-0
Terminal cover: Polyamide resin (PA6), UL94 V-2
Dimensions: 110 x 110 x 128 mm (H x W x D) 96 x 96 x 126 mm (H x W x D)
Weight: Approx. 600 g