CT303 Description
Overview
The CT303 is a LoRaWAN three-phase smart current transformer for wireless energy monitoring and usage analysis. With a 300 A range and a Φ24.2 mm wire hole, it is sized for device-level and branch-circuit monitoring of small to medium electrical loads.
Three-Phase, Self-Powered Monitoring
A one-to-three clamp design measures up to three phases at once, and the device harvests power directly from the measured circuit, eliminating batteries and external wiring while keeping continuous operation.
High-Accuracy Measurement
With ±1% accuracy, sampling up to 3.3 kHz and a 1 s sampling rate, the CT303 reports RMS current and accumulated ampere-hours in real time for detailed energy analysis.
Smart Alerts
Configurable threshold, over-current, wire-temperature and low-voltage alerts (with an LED indicator) enable swift action, with an optional external NTC sensor for cable temperature.
Non-Invasive Installation
The split-core clamp attaches around existing wires without de-energizing the circuit, so it deploys quickly in distribution boxes for retrofit projects without downtime.
Integration
Compliant with standard LoRaWAN gateways and the Milesight Development Platform, the CT303 forwards data to BMS or energy-management systems for centralized monitoring.
