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Entelar Energy Smart Power Sensor, Three Phase, 0-250 A
Entelar Energy Smart Power Sensor, Three Phase, 0-250 A

Entelar Energy Smart Power Sensor, Three Phase, 0-250 A

SKU DTSU666-H 250A
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  • Description
  • Key Features
  • Technical Specifications

The DTSU666-H 250A Smart Power Sensor is a three-phase metering device designed for high-current energy monitoring in solar, commercial, or industrial installations. With built-in current transformers (CTs), DIN-rail mounting, and RS-485 communication, it enables accurate real-time measurement of energy parameters for power control, export limitation, or energy management systems.

  • Measures up to 250 A three-phase current (250 A/50 mA CTs included). 

  • Supports both 3P4W and 3P3W wiring configurations. 

  • Accurate measurement of voltage, current, active & reactive power, frequency, forward/reverse energy, etc.

  • DIN35 rail mounting; form factor designed for easy installation.

  • RS-485 interface using Modbus-RTU protocol.

  • Wide environmental tolerance: operating temp from -25 °C to +60 °C

Specification Value 
Nominal / Rated Current 250 A (via included CTs) 
Voltage Rating 3 × 230/400 V (or ~400 V 3-phase) 
Wiring Types Supported 3P4W and 3P3W configurations 
Accuracy Class Class 1 for active energy; typical voltage ±0.5 %, current/power ±1.0 % 
Dimensions (H × W × D) 72 mm × 100 mm × 65.5 mm (±0.5 mm) 
Weight ≈ 0.8 kg 
Power Consumption ≤ ~1.5 W (voltage circuits + current circuits) 
Communication Interface RS-485 Modbus-RTU 
Operating Temperature Range –25 °C to +60 °C 
Storage / Extended Temperature Range –40 °C to +70 °C 
Relative Humidity Operating (non-condensing) 5% - 95% RH