SKU: 3445862912

Milesight CT303 Self-Powered 3-Phase 300A LoRaWAN Current Transformer

Sale price$1587.90 Regular price$1764.33
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Description

Milesight CT303 Self-Powered 3-Phase 300A LoRaWAN Current TransformerRevolutionize Your Energy Management Introducing the Milesight CT303, a state of the art LoRaWAN Smart Current Transformer designed for precise, real time monitoring of electrical consumption. Engineered for efficiency and accuracy, the CT303 is the ideal solution for smart building energy management, equipment performance monitoring, and predictive maintenance. Its innovative one to three design allows you to measure the electricity of up to three

Revolutionize Your Energy Management

Introducing the Milesight CT303, a state-of-the-art LoRaWAN® Smart Current Transformer designed for precise, real-time monitoring of electrical consumption. Engineered for efficiency and accuracy, the CT303 is the ideal solution for smart building energy management, equipment performance monitoring, and predictive maintenance. Its innovative one-to-three design allows you to measure the electricity of up to three different objects simultaneously, providing comprehensive insights into your energy usage patterns to foster conservation and reduce operational costs.

Effortless Installation & Unmatched Performance

The CT303 features a user-friendly, non-invasive clamp-on design that ensures safe and rapid installation without the need to interrupt power or risk circuit damage. This cable-free deployment simplifies the process, reduces labor costs, and offers flexible placement. A standout feature is its self-powered technology; the device derives energy directly from the measured circuit, completely eliminating the need for batteries and ensuring continuous, seamless operation. With a high sampling frequency of up to 3.3kHz, the CT303 delivers superior accuracy (±1%), outperforming competitors and guaranteeing unparalleled detail in your energy data.

Smart Monitoring with Instant Alerts

Stay ahead of potential issues with intelligent threshold alerts. You can set minimum and maximum current thresholds and receive instant alarms when these are triggered. The over-current alert provides immediate notification when the current exceeds the rated limit, accompanied by a flashing LED indicator for quick visual confirmation. For enhanced safety, an optional external wire temperature sensor can be added to trigger alerts when a set temperature is reached. Leveraging the power of LoRaWAN® technology, the CT303 ensures stable, long-range wireless data transmission, making it perfect for multi-story commercial and industrial buildings.

Key Features:

  • Multi-Target Measurement: Unique one-to-three design monitors up to three circuits at once.
  • Self-Powered Operation: No batteries required; powered by the measured circuit for uninterrupted service.
  • Non-Invasive Installation: Clamp-on probe allows for quick and safe setup without power interruption.
  • Superior Accuracy: High sampling frequency up to 3.3kHz provides highly detailed and precise energy tracking.
  • Real-Time Alerts: Configurable thresholds for current and temperature provide instant notifications of irregularities.
  • LoRaWAN® Connectivity: Ensures reliable long-range, low-power wireless communication for seamless IoT integration.
  • Efficient Energy Tracking: Calculates accumulated ampere-hours in real-time at one-second intervals for precise consumption analysis.

Technical Specifications

Wireless Transmission
Technology LoRaWAN®
Frequency EU868
Tx Power 16 dBm
Mode OTAA/ABP Class A
Sensor Measurement
Rated Primary Current 300A
Accuracy ±1%
Sampling Frequency Up to 3.3 kHz
Resolution 1 mA
Minimum Reporting Current 0.25A (1 min interval), 1.5A (10 min interval)
Working Frequency 50-60 Hz
Physical Characteristics
Power Supply Self-powered via induced current
Operating Temperature Transmitter: -20°C to +70°C; CT Clamp: -40°C to +55°C
Ingress Protection IP30
Wire Hole Size 24 mm
Installation Non-invasive clamp-on
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3445862912

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Hardy
Cuba, US
★★★★★ 5
Love it
I’m honestly impressed with this mouse. The Wireless Optical Mouse works exactly as it should—simple, reliable, and smooth. Setup was instant, just plug in the USB receiver and it’s ready to go. No lag or connectivity issues at all. The tracking is precise, and it feels comfortable even after long use. The battery life is solid, and I like that it goes into sleep mode to save power. It’s lightweight but still feels well-built, not cheap. For the price, this is a great value. If you need a dependable wireless mouse without overpaying for unnecessary features, this is a perfect choice.
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Reviewed in the United States on April 24, 2026
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Gutale
Lexington, US
★★★★★ 5
Amazon basics mouse
Good mouse with hight quality. Works like a charm. I recommend for anyone looking for a cheap high quality Amazon basics mouse. You wont regret it.
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Reviewed in the United States on June 6, 2026
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Mustangjim1
Lexington, US
★★★★★ 5
Awesome quality mouse
Fantastic value. First it feels like a quality mouse and works like a mouse 3-4x the price. It is solid and has nice weight to it, not like some of the flimsy competitors. I am buying another just to have.
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Reviewed in the United States on May 26, 2026
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Verified Purchase
M. S. Walker
Pawtucket, US
★★★★★ 5
Great Mouse
I normally use the Logitech M325c. I've gone through dozens over the years. It works very well, but they seem to wear out fast; the wheel scroll is what fails. I decided to give the Amazon Basics a try. So far, it looks, feels, and functions the same as the Ltech; it doesn't have the fun colors, but if it holds up longer than a year, it's a fair tradeoff. I will revise this review if things change in the future, but as of now, I would recommend the Amazon Basics and will replace the other Ltech's when the time comes.
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Reviewed in the United States on May 7, 2026
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VetPilot
Port Orchard, US
★★★★★ 5
High Quality and Operability - Great!
Great mouse! Not only good, but feels and operates as well as, or better than a Microsoft mouse, and a lot more reasonable! Comes with AAA batteries, the USB transceiver is stored inside the battery compartment (good when packing and traveling), and a white support strap lays down below the installed batteries so that it is easier to remove them when its time to change the battery. Be sure to go into Control Panel/Mouse and make any click-speed or mouse movement adjustments to your liking. I plan on buying another one of these for my second HP laptop. The USB transceiver is immediately responsive and you will see a red laser at the bottom of the mouse.
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Reviewed in the United States on April 29, 2026

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