Main applications Residential MDU (Multi Dwelling Units – apartments, condominiums, hotels, etc.) Light commercial (small office buildings, small retail/restaurant/gas station, etc.) Agricultural (farms, barns, silos, etc.) Government/municipal University/college Simplified internal schematics Device electrical interfaces Inputs 4 line inputs on screw terminals: 3 L and 1 N 4 current transformer inputs: 3 for L current measurements and 1 for N current measurement Ethernet port 1 RJ45 connector ⚠CAUTION! Plug in or unplug the LAN cable only when the Device is powered off! The LAN cable connector must not be metallic in the parts touched by the user to plug in or unplug the cable. Add-on interface Shelly proprietary serial interface ⚠CAUTION! High voltage on the add-on interface when the Device is powered! Connectivity Wi-Fi Ethernet Bluetooth Each connectivity option can be enabled or disabled by the user. Safety features Internal temperature sensing and reporting Supported load types Resistive (incandescent bulbs, heating devices) Capacitive (LED light drivers, capacitor banks, electronic equipment, motor start capacitors) Inductive (transformers, fans, refrigerators, air-conditioners) User interface Inputs One tactile dome button Press briefly to toggle the state of the relay in the attached Shelly Pro 3EM Switch Add-on. Press and hold for 5 sec to activate Device AP. Press and hold for 10 sec to factory reset. Outputs LED indication Power: Red light if the power supply is connected. Wi-Fi (varies): Blue light if in AP mode. Red light if in STA mode, and not connected to a Wi-Fi network. Yellow light if in STA mode, and connected to a Wi-Fi network. Not connected to Shelly Cloud or Shelly Cloud disabled. Green light if in STA mode, and connected to a Wi-Fi network and the Shelly Cloud. The LED will be flashing Red/Blue if OTA update is in progress. LAN: Green light if LAN is connected. Count: Red light will be flashing when the Device is measuring energy according to settings with frequency dependent on the energy flowing through the measured circuit. Specifications Type Value Physical Size (HxWxD): 94x19x69 ±0.5 mm / 3.70×0.75×2.71 ±0.02 in Weight: 62 ±1 g / 2.19 ±0.05 oz Mounting: DIN rail Screw terminals max torque: 0.4 Nm / 4.43 lbin Conductor cross section: 0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded, and bootlace lugs) Conductor stripped length: 6 to 7 mm / 0.24 to 0.28 in Shell material: Plastic Color: White Environmental Ambient temperature: -20 °C to 40 °C / -5 °F to 105 °F Humidity: 30 % to 70 % RH Max. altitude: 2000 m / 6562 ft Electrical Power supply voltage AC: 100 – 260 V, 50/60 Hz Power supply voltage DC: N/A Power consumption: < 3 W External protection: Tripping characteristic B or C, 16A max. rated current, min. 6 kA interrupting rating, energy limiting class 3 Sensors, meters Internal-temperature sensor: Yes Voltmeters (RMS for each phase): 100 – 260 V Voltmeters accuracy: ±1 % Ammeters (RMS via CT for each phase and the Neutral): 0 – 120 A Compatible CT CT 120A Ammeters accuracy: ±1 % (2 – 120 A), ±2 % (1 – 2 A), ±5 % (0 – 1 A) Power and energy meters: Active and apparent power Active and apparent energy Power factor Fundamental active and fundamental reactive energy Channel-to-channel calibration minimum load 500 W per channel No load threshold: 30 VA per channel Measurement data storage: At least 60 days of 1 min data resolution Data export: CSV for PQ recorded values JSON format export through RPC Radio RF band: 2400 – 2495 MHz Max. RF power: <20 dBm Wi-Fi protocol: 802.11 b/g/n Wi-Fi Range: Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors (Depends on local conditions) Bluetooth Protocol: 4.2 Bluetooth Range: Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (Depends on local conditions) MCU CPU: ESP32-D0WDQ6 Flash: 16 MB Firmware capabilities Webhooks (URL actions): 20 with 5 URLs per hook Scripting: Yes MQTT: Yes CoAP: No Basic wiring diagrams Legend Terminals Wires A Phase A input LA Phase A live (110-240 V) wire B Phase B input LB Phase B live (110-240 V) wire C Phase C and power supply input LC Phase C live (110-240 V) wire N Neutral terminal L Mono-phase live (110-240 V) wire IA Phase A current transformer input N Neutral wire IB Phase B current transformer input Current transformers IC Phase C current transformer input CTA Phase A current transformer IN Neutral current transformer input CTB Phase B current transformer CTC Phase C current transformer CTN Neutral current transformer (Optional. Not included)
