CT3xx LoRaWAN® Smart Current Transformer

Milesight CT3xx series is a wireless LoRaWAN® smart current transformer for non-invasive current measurement. The split-core clamp design connects to existing electrical circuits without interruption, supporting 300A, 500A, and 1000A measurement ranges from device-level circuits to main power systems. Designed for smart buildings, industrial facilities, and commercial properties to monitor energy trends, perform phase-level sub-metering, and detect equipment status. IoTMarketi is Turkey's leading multi-brand IoT catalog, featuring Milesight and other manufacturers' solutions; all products are procured through a project-based quote system.

Key features

• High Accuracy: ±1% measurement accuracy with sampling frequency up to 3.3 kHz
• Low Startup Current: Stable measurement from 2.5A onwards
• Battery-Free: Derives power directly from the measured circuit; no maintenance or replacement costs
• Non-Invasive Installation: Clamp design enables quick and safe mounting without circuit interruption
• Multi-Target Measurement: Single device can measure electricity consumption of up to three different objects
• Real-Time Alerts: Automatic notifications for abnormal consumption conditions
• Cumulative Ampere-Hour Calculation: Detailed energy consumption data analysis

Benefits

• No circuit interruption required during installation in electrical distribution panels
• Multiple clamp sizes accommodate various wire thicknesses (Φ24 mm, Φ36.6 mm, Φ51 mm)
• Industrial-grade design ensures long-term reliable operation
• Cost savings in energy and water management applications
• Ideal for three-phase energy monitoring in factories and commercial buildings
• Simple cable-free deployment eliminates complex wiring

Use cases

• Device Level: Pumps, fans, air handling units, rooftop HVAC systems, compressors, elevators, small distribution panels
• Area Level: Floor-level distribution panels, cooling tower systems, production lines, UPS circuits, grouped HVAC equipment
• Main Power Systems: Building main incoming lines, factory main distribution cabinets, large chillers, data center power circuits, EV charging stations, transformer low-voltage sides

Technical notes

• Measurement Range: 2.5A – 300A/500A/1000A (model-dependent)
• Accuracy: ±1%
• Sampling Frequency: Up to 3.3 kHz
• Protocol: LoRaWAN®
• Power Source: Self-powered (battery-free)
• Installation Type: Non-invasive split-core clamp
• Wire Hole Sizes: Φ24 mm (CT303), Φ36.6 mm (CT305), Φ51 mm (CT310)

Version differences

• CT303: 300A capacity, Φ24 mm wire hole, suitable for device-level and small-to-medium load applications
• CT305: 500A capacity, Φ36.6 mm wire hole, suitable for area-level and medium-to-large equipment groups
• CT310: 1000A capacity, Φ51 mm wire hole, suitable for main power circuits and high-capacity systems

Video

This record is the CT310 (1000A) version. Other options are selected via version buttons on the product page.

This version: 1000A kapasite, Φ51 mm tel deliği, ana güç devreleri ve yüksek kapasiteli sistemler için.