Milesight CT303 | Self-Powered LoRaWAN® Smart Current Transformer (300A)
The CT303 is a self-powered LoRaWAN current sensor for maintenance-free, non-invasive energy monitoring.
- No batteries needed: self-powered from Phase A induced current, USB-C backup
- Precise monitoring: up to 300 A RMS at ±1% accuracy, 3.3 kHz sampling
- Full three-phase view: all three phases plus cable-temperature support
Milesight CT303 | Self-Powered LoRaWAN® Smart Current Transformer (300A) - EU868 is backordered and will ship as soon as it is back in stock.
VAT Free Transaction Option
VAT Free Transaction Option
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Secure Payment & Warranty
Secure Payment & Warranty
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Delivery and Shipping
Delivery and Shipping
Reliable, tracked, and fast global shipping via FedEx Express. Your professional IoT hardware is dispatched from our EU-based warehouse within 2 business days.
Milesight CT303 | Self-Powered LoRaWAN® Smart Current Transformer (...
Description
Description
The Milesight CT303 is a specialized LoRaWAN® Smart Current Transformer designed for industrial and commercial energy management. Engineered for the 300A range, this model eliminates the most common barrier to IoT energy deployments: power supply. By utilizing induced current power technology, the CT303 operates entirely without batteries or external wiring when connected to an active Phase A conductor. Its non-invasive split-core design allows for rapid installation without de-energizing facilities, making it the ideal tool for retrofitting energy intelligence into existing electrical infrastructure.
Core Capabilities
Energy Management Use Cases
Technical Integration
The CT303 is fully compliant with LoRaWAN® Class A and supports global frequency bands (EU868, US915, etc.). It features Over-the-Air Firmware Updates (FUOTA) and threshold alarm capabilities for instant notification of electrical anomalies. When powered by the testing conductor, it requires a minimum primary current (starting from 15A $A_{rms}$ depending on reporting interval) to report data; for lower current measurement, the unit can be powered via its USB Type-C port. For large-scale facility retrofits, contact the ShopIoT engineering team for system architecture support.
Specifications
Specifications
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Primary Communication ProtocolLoRaWAN
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Frequency/RegionEU868
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Antenna TypeExternal (SMA)
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Configuration MethodNFC, USB
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Activation MethodOTAA, ABP
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Environment RatingIndoor
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IP RatingIP30
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Operating Temperature-20°C to 60°C
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Enclosure MaterialPC (Polycarbonate)
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Power ConsumptionPowered by Testing Conductor (Phase A)
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Measurement Technology
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Measurement Range
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Measurement Accuracy
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Measurement Resolution
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Monitoring ParametersCurrent (A), Accumulated Current, Cable Temperature
Document Library
Document Library
Payment & Security
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