Price range: $170.00 through $412.50
CT3XX Smart Current Transformer
With a one-to-three design, the current transformer can be applied to measuring up to three different objects’ electricity.
The CT3xx is designed to derive power directly from the measured circuit, eliminating the constraints of batteries while ensuring seamless operation
The Smart Current Transformer is a LoRaWAN®-enabled device with an innovative, non-intrusive quick installation. Suitable for 1 to 3 wires, it accurately estimates energy consumption with a sampling rate up to 3.3kHz and calculates cumulative ampere-hours every second, helping identify energy usage patterns for effective savings.
| CT303
Electrical Measurement |
|
|---|---|
| Detection Parameter | RMS Current |
| Sampling Frequency | 3.3 kHz |
| Working Frequency | 50~60 Hz |
| Rated Primary Current (Per CT) | 300 Arms |
| Rated Secondary Current | 150 mArms |
| Minimum Reporting Current1 | 25Arms (1min Interval) 15Arms (10min Interval) |
| Accuracy | ±1 % |
| Resolution | 1 mA |
| Temperature Sensor | Sensor type: 1 × NTC Sensor Measuring range: -20°C ~ 100°C Measuring accuracy: ±1 % |
| Wireless Transmission | |
| Protocol | LoRaWAN® |
| Antenna Connector | 1 × 50 Ω SMA Connector (Center PIN: SMA Female) |
| Frequency | CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| Tx Power | 16 dBm (868 MHz)/20 dBm (915 MHz)/19 dBm (470 MHz) |
| Sensitivity | -137dBm |
| Mode | OTAA/ABP Class A |
| Others | |
| Button | 1 Ă— Reboot Button |
| LED Indicator | 1 Ă— Status/Alarm Indicator |
| Port | 1 Ă— USB Type-C for Power Supply, Configuration, Console or Cable Temperature Sensor Connection |
| Software | |
| Configuration | USB Type-C or Downlink |
| Advanced Feature | Threshold Alarm, Overrange Alarm, FUOTA |
| Physical Characteristics | |
| Power Supply | 1. Induced current power supply2 2. 5V by USB Type-C Port |
| Insulation Voltage | 3kVac(r.m.s)(1mA/1min) |
| Color/ Material | Blue, PBT+PC (UL94 V0) |
| Cable Length | 1m |
| Operating Temperature | Transceiver: -20°C~70°C (-4°F~158°F) CT Clamp: -40°C~55°C (-40°F~131°F) |
| Storage Temperature | Transceiver: -25°C~80°C (-13°F~176°F) CT Clamp: -40°C~55°C (-40°F~131°F) |
| Relative Humidity | ≤ 95% (Non-condensing) |
| Ingress Protection | IP30 |
| Dimensions | Transceiver: 38 × 34.5 × 16 mm (1.5 × 1.36 × 0.63 in) CT Clamp:56.5 × 36.5 × 68.5 mm (2.24 × 1.44 × 2.70 in) Wire Hole: Ф 24.2 mm(Ф 0.95 in) |
| Weight | Transceiver: 13.05 g Per CT Clamp: 250 g |
| Installation | Transceiver: Cable-tie Mounting (under integrated mode)
CT Clamp: Suspended on the Testing Conductor |
| Approvals | |
| Regulatory | CE, FCC, UL508 |
| CT305
Electrical Measurement |
|
|---|---|
| Detection Parameter | RMS Current |
| Sampling Frequency | 3.3 kHz |
| Working Frequency | 50~60 Hz |
| Rated Primary Current | 500 Arms |
| Rated Secondary Current | 150mA |
| Start Current | 30 Arms |
| Accuracy | ±1 % |
| Resolution | 1 mA |
| Temperature Sensor | Sensor type: 1 × NTC Sensor Measuring range: -20°C ~ 100°C Measuring accuracy: ±1 % |
| Wireless Transmission | |
| Protocol | LoRaWAN® |
| Antenna Connector | 1 × 50 Ω SMA Connector (Center PIN: SMA Female) |
| Frequency | CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| Tx Power | 16 dBm (868 MHz)/20 dBm (915 MHz)/19 dBm (470 MHz) |
| Sensitivity | -137dBm |
| Mode | OTAA/ABP Class A |
| Others | |
| Button | 1 Ă— Reboot Button |
| LED Indicator | 1 Ă— Status/Alarm Indicator |
| Port | 1 Ă— USB Type-C for Power Supply, Console or Cable Temperature Sensor Connection |
| Configuration | USB Type-C or Downlink |
| Physical Characteristics | |
| Power Supply | Induced current power supply |
| Insulation Voltage | 3kVac(r.m.s)(1mA/1min) |
| Color/ Material | Blue, PBT+PC (UL94 V0) |
| Cable Length | 1m |
| Operating Temperature | Transceiver: -20°C~70°C (-4°F~158°F) CT Clamp: -40°C~55°C (-40°F~131°F) |
| Storage Temperature | Transceiver: -25°C~80°C (-13°F~176°F) CT Clamp: -40°C~55°C (-40°F~131°F) |
| Relative Humidity | ≤ 95% (Non-condensing) |
| Ingress Protection | IP30 |
| Dimensions | Transceiver: 38 × 39.7 × 16 mm (1.5 × 1.56 × 0.63 in) CT Clamp: 65.52 × 90 × 43 mm (2.58 × 3.54 × 1.69 in) Wire Hole: Ф 36.6 mm (Ф 1.44 in) |
| Weight | Transceiver: 13.05 g Per CT Clamp: 276.75 g |
| Installation | Transceiver: Cable-tie Mounting (under integrated mode) CT Clamp: Suspended on the Testing Conductor |
| CT310
Electrical Measurement |
|
|---|---|
| Detection Parameter | RMS Current |
| Sampling Frequency | 3.3 kHz |
| Working Frequency | 50~60 Hz |
| Rated Primary Current | 1000 Arms |
| Rated Secondary Current | 150mA |
| Start Current | 60 Arms |
| Accuracy | ±1 % |
| Resolution | 1 mA |
| Temperature Sensor | Sensor type: 1 × NTC Sensor Measuring range: -20°C ~ 100°C Measuring accuracy: ±1 % |
| Wireless Transmission | |
| Protocol | LoRaWAN® |
| Antenna Connector | 1 × 50 Ω SMA Connector (Center PIN: SMA Female) |
| Frequency | CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| Tx Power | 16 dBm (868 MHz)/20 dBm (915 MHz)/19 dBm (470 MHz) |
| Sensitivity | -137dBm |
| Mode | OTAA/ABP Class A |
| Others | |
| Button | 1 Ă— Reboot Button |
| LED Indicator | 1 Ă— Status/Alarm Indicator |
| Port | 1 Ă— USB Type-C for Power Supply, Console or Cable Temperature Sensor Connection |
| Configuration | USB Type-C or Downlink |
| Physical Characteristics | |
| Power Supply | Induced current power supply |
| Insulation Voltage | 3kVac(r.m.s)(1mA/1min) |
| Color/ Material | Blue, PBT+PC (UL94 V0) |
| Cable Length | 1m |
| Operating Temperature | Transceiver: -20°C~70°C (-4°F~158°F) CT Clamp: -40°C~55°C (-40°F~131°F) |
| Storage Temperature | Transceiver: -25°C~80°C (-13°F~176°F) CT Clamp: -40°C~55°C (-40°F~131°F) |
| Relative Humidity | ≤ 95% (Non-condensing) |
| Ingress Protection | IP30 |
| Dimensions | Transceiver: 38 × 39.7 × 16 mm (1.5 × 1.56 × 0.63 in) CT Clamp: 97.9 × 119 × 60mm (3.85 × 4.69 × 2.36 in) Wire Hole: Ф 51 mm (Ф 2.01 in) |
| Weight | Transceiver: 13.05 g Per CT Clamp: 855.55 g |
| Installation | Transceiver: Cable-tie Mounting (under integrated mode) CT Clamp: Suspended on the Testing Conductor |
Only logged in customers who have purchased this product may leave a review.
Evan Arachikavitz (verified owner) –
I am really impressed with these units. I am using several to monitor amperages and run times on industrial equipment in our foundry. They are paired with our Siemens Connect Box gateway.
The devices are very easy to install and configure. The readouts are accurate- I compared with my clamp meter. The only downside is the lack of a strong internal battery. They are powered by the parasitic current coming off the CT itself, so if your equipment is not on, the meter can not send any data, even zeros. The device can be powered by a USB-C 5vdc power source, but then the included wire temp probe can’t be plugged in. I solved this with a USB-C splitter.