Milesight CT3xx Wireless Smart Current Transformer

Description

Empowering Efficient Energy Management

The Milesight CT3xx series are industrial-grade wireless smart current transformers designed for non-intrusive AC current monitoring via LoRaWAN®. Available in three models — CT303 (300 A), CT305 (500 A), and CT310 (1000 A) — they eliminate the need for external power with a self-powered design and deploy wirelessly, making energy management retrofits simple and cost-effective.

Key Features

Self-Powered Operation — Harvests energy directly from the monitored conductor; no batteries or external wiring required.
Superior Accuracy Up to 3.3 kHz — High-frequency sampling captures distorted waveforms from non-linear loads with precision.
Real-time & Accumulated Ampere-Hour Calculation — Provides both instantaneous RMS current and cumulative ampere-hour data for energy accounting.
Non-invasive Installation — Split-core clamp design clamps around existing conductors without interrupting the circuit.
Innovative One-to-Three Design — A single transceiver unit monitors up to three separate conductors simultaneously, reducing deployment costs.
Irregular Current / Temperature Status Alert — Configurable threshold alerts for overcurrent and abnormal temperature conditions.
LoRaWAN® Wireless Deployment — Long-range, low-power wireless connectivity; integrates with Milesight and third-party LoRaWAN networks and IoT platforms.

Technical Specifications

Protocol: LoRaWAN® Class A, OTAA / ABP
Current Range: CT303: 0–300 A | CT305: 0–500 A | CT310: 0–1000 A
Sampling Frequency: Up to 3.3 kHz
Power Supply: Self-powered (energy harvested from conductor)
Protection Rating: IP30
Operating Temperature: Transceiver −20 °C to +70 °C; CT Clamp −40 °C to +55 °C
Certifications: CE, FCC, UL508