MILESIGHT - 250A Non-invasive Smart Current Transformer

The Smart Current Transformer is a LoRaWAN®-enabled device with an innovative, non-intrusive quick installation. It accurately estimates energy consumption with a sampling rate up to 3.3kHz and calculates cumulative ampere-hours every second, helping identify energy usage patterns for effective savings.

Detachable Design

It can be easily disassembled to adapt to a variety of installation environments, particularly those constrained by limited space.

Self-Powered: No Batteries, No Limits

The CT103 is designed to derive power directly from the measured circuit, eliminating the constraints of batteries while ensuring seamless operation.

Superior Accuracy

Outperform other competitors on the market, CT103 boasts an impressive high sampling frequency of up to 3.3kHz, guaranteeing unparalleled accuracy and detail.

Efficient Energy Tracking At One-Second Interval

Calculate accumulated ampere hour in real-time at a one-second interval. This enables precise current consumption monitoring and analysis, achieving goals such as energy conservation and reduced operational

Non-Invasive Installation

Split core product design for non-invasive and quick installation, eliminating the risk of circuit damage or power interruptions.

Features of Milesight CT103 Smart Current Transformer:

• Self-Powered Operation
• Superior Accuracy with Up to 3.3kHz Frequency
• Real-time Accumulated Ampere Hour Calculation
• Non-invasive Installation
• Irregular Current Status Alert
• External Wire Temperature Sensor
• Detachable and Cable-Free Design
• LoRaWAN® Wireless Technology

Technical Specifications of Milesight CT103 Smart Current Transformer:

• Electrical
• Detection Parameter: RMS Current
• Sampling Frequency: 3.3 kHz
• Working Frequency: 50~60 Hz
• Rated Primary Current: 250 A
• Transformer Ratio: 2000:1
• Start Current: 2 A
• Accuracy: ±1 % (>5Arms), ±3 % (≤ 5Arms)
• Resolution: 1 mA
• Temperature Sensor: Sensor type: NTC Measuring range: -20°C ~ 100°C Measuring accuracy: ±1 %
• Wireless Transmission
• Protocol: LoRaWAN®
• Antenna Connector: 1 × 50 Ω SMA Connector (Center PIN: SMA Female)
• Frequency: EU868
• Tx Power: 16 dBm (868 MHz)/22 dBm (915 MHz)/19 dBm (470 MHz)
• Sensitivity: -137dBm
• Mode: OTAA/ABP Class A
• Others
• Button: 1 × Reboot Button
• LED Indicator: 1 × Status/Alarm Indicator
• Port: 1 × USB Type-C for Power Supply, Console or Cable Temperature Sensor Connection
• Configuration: USB Type-C or Downlink
• Physical Characteristics
• Power Supply: Induced current power supply
• Insulation Voltage: 2.5kVac(r.m.s)(1mA/1min)
• Color/ Material: Blue, PBT+PC (UL94 V0)
• Operating Temperature: -20°C~70°C 
• Storage Temperature: -25°C~80°C
• Relative Humidity: ≤ 95% (Non-condensing)
• Ingress Protection: IP30
• Dimensions: 86.5 × 31 × 37.4 mm
• Wire Hole: Ф 16 mm (Ф 0.63 in)
• Weight: 85.65g
• Installation: CT Clamp: Suspended on the Testing Conductor Transceiver: Cable-tie Mounting (under integrated mode)