MS-CT303
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MS-CT303

On Request

This product is currently not in stock, but can be ordered upon request.

We will be happy to handle the request directly with the manufacturer. Please contact us for more information.

  • Self-sustaining operation
  • High precision 3,3Khz
  • Real-time cumulative A/h calculation
  • Non-invasive installation
  • Consumption/temperature alert
  • LoRaWAN Communication
  • Description
  • Specifications
  • Contents
  • Downloads

CT3xx is a LoRaWAN® smart current transformer for remotely monitoring and analyzing energy consumption. CT3xx offers multiple current options for energy monitoring and supports the sending of threshold alarms. Its compact size allows for quick and safe installation in any indoor space without the need to disconnect existing systems, which simplifies installation and saves costs. Compatible with the Milesight LoRaWAN® gateway and the Milesight development platform, CT3xx can be conveniently monitored remotely via a web page. CT3xx is widely used for energy monitoring in smart buildings, the detection and prevention of machinery failures, etc..

  • Report current and cumulative RMS values by the minute
  • High measurement accuracy with a sampling rate of up to 3,3 kHz
  • Self-powered, no batteries or external cables required.
  • It uses a sampling rate of up to 1 seconds for real-time monitoring and rapid response to alarms.
  • The non-invasive clamp design ensures easy and safe installation without the need to disconnect the power supply.
  • Equipped with an LED indicator to display operating status and alarms.
  • Supports an external cable temperature sensor for measuring cable temperature
  • Enables simultaneous detection of three phases with an optionally significantly wide detection range of 300 A.
  • Compatible with standard LoRaWAN® network servers and gateways
  • Supports over-the-air (OTA) firmware updates

Energy measurement

Detection parametersRMS current
Sampling frequency3.3 kHz
Work frequency50~60 Hz
Rated primary current (via CT)300 Arms
Rated secondary current150 mArms
Minimum consumption report25Arms (Interval of 1 min)
15Arms (Interval of 10 min)
Accuracy±1 %
Resolution1 mA
Temperature sensorSensor type: 1 NTC sensor
Measuring range: -20 °C ~ 100 °C
Measuring accuracy: ±1 %

Wireless transmission

ProtocolLoRaWAN®
Antenna connector1 SMA connector rated at 50 Ω (center pin): (female SMA)
FrequencyCN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
Transmission power16 dBm (868 MHz)/20 dBm (915 MHz)/19 dBm(470 MHz)
Sensitivity-137dBm
ModeOTAA/ABP Class A

User interfaces

Buttons1 × Reset button
LED indicators1 × Status/Alarm Indicator
Port1 × USB Type-C for power supply, configuration, console, or wired temperature sensor connection

Software

ConfigurationUSB Type-C or downlink
Advanced featuresThreshold alarm, over-range alarm, FUOTA

Physical characteristics

Power1. Inductive power supply
2. 5 V via USB Type-C port
Voltage isolation3 kVCA (rms) (1 mA/1 min)
Color / materialBlue, PBT+PC (UL94 V0)
Cable length1 meter
Working temperatureTransceiver: -20 °C ~ 70 °C (-4 °F ~ 158 °F)
CT clamp: -40 °C ~ 55 °C (-40 °F ~ 131 °F)
Storing temperatureTransceiver: -25 °C ~ 80 °C (-13 °F ~ 176 °F)
CT clamp: -40 °C ~ 55 °C (-40 °F ~ 131 °F)
Relative humidity≤ 95% (without condensation)
ProtectionIP30
DimensionsTransceiver: 38 × 34,5 × 16 mm (1,5 × 1,36 × 0,63 inches)
CT Clamp:
56,5 × 36,5 × 68,5 mm
(2,24 × 1,44 × 2,70 inches)
Cable opening: Ф 24,2 mm (Ф 0,95 in.)
WeightTransceiver: 13,05 g
By CT clamp: 250 g
InstallationTransceiver: Flange mounting (integrated)
TC clamp: Suspended from the test driver
RegulationsCE, FCC, UL508

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