CT303 – 300A RMS LoRaWAN Current Sensor with NTC Probe and Inductive Power Supply – Milesight | DistrIoT
CT303 – 300A RMS LoRaWAN Current Sensor with NTC Probe and Inductive Power Supply – Milesight

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CT303 – 300A RMS LoRaWAN Current Sensor with NTC Probe and Inductive Power Supply – Milesight

Capteur CT303 Milesight LoRaWAN, mesure 300 A RMS, sonde température NTC, alimentation inductive, IP30, montage sur câble.

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Description détaillée

CT303 – 300A RMS LoRaWAN Current Sensor with NTC Probe and Inductive Power Supply – Milesight

General Description

Milesight 's CT303 is a smart sensor designed for measuring AC currents up to 300 A RMS in industrial environments. Featuring an NTC temperature sensor, LoRaWAN® connectivity, and inductive power, it provides accurate current and temperature data. Its modular design allows for quick cable mounting, with an SMA connector and USB-C port for configuration and secondary power supply.

Targeted Applications

  • Energy monitoring in industrial or tertiary systems
  • Predictive maintenance of high-power equipment
  • Combined temperature and current measurements
  • Monitoring critical installations in LoRaWAN network

Highlights

  • RMS current measurement up to 300 A with an accuracy of ±1%
  • Built-in NTC sensor (-20°C to 100°C)
  • Induction power supply without battery or external connection
  • LoRaWAN® Class A connectivity
  • LED indicator, restart button, USB-C port
  • Compact IP30 design for direct cable installation

Technical Specifications

Electrical Measurements
Measured parameter RMS current
Sampling frequency 3.3 kHz
Working frequency 50~60 Hz
Nominal current 300 Arms (primary) / 150 mArms (secondary)
Minimum current detected 25 Arms (1 min) / 15 Arms (10 min)
Precision ±1%
Resolution 1 mA
Temperature Sensor
Kind NTC
Beach -20°C to 100°C
Precision ±1%
Wireless Transmission
Technology LoRaWAN®
Antenna connector 1 × SMA female (50 Ω)
Frequencies CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1/2/3/4
Transmit power 16 dBm (868 MHz), 22 dBm (915 MHz), 19 dBm (470 MHz)
Sensitivity -137 dBm
Fashion OTAA / ABP – Class A
Interfaces and Configuration
USB 1 × Type-C (power, console, sensor)
Button 1 × reboot
Indicator 1 × Status/Alarm LED
Configuration Via USB Type-C or Downlink
Physical Characteristics
Food By induction
Insulation voltage 3 kVac (1 mA / 1 min)
Operating temperature Transmitter: -20°C to 70°C / Clamp: -40°C to 55°C
Storage temperature Transmitter: -25°C to 80°C / Clamp: -40°C to 55°C
Relative humidity ≤ 95% (non-condensing)
Protection index IP30
Dimensions Transmitter: 38 × 39.7 × 16 mm / Clamp: 56.5 × 36.5 × 68.5 mm
Weight Transmitter: 13.05 g / CT clamp: 250 g
Cable passage F 24 mm
Facility Hanging clamp, transmitter in cable clamp mounting
Compliance
Certifications CE, FCC, UL508

Interfaces and Connectors

The CT303 features a USB Type-C port, an SMA antenna connector, a reboot button, an LED indicator, as well as a dedicated CT clamp and 1 meter cable for NTC probe.

Pack Contents

  • 1 × CT303 Current Sensor
  • 1 × User Guide
  • 1 × Mounting Kit