Shelly Pro3 EM CT63 is a three-phase energy meter that uses current transformers to measure
energy data on three individual phases with loads up to 63A and with 99% accuracy. The device
measures power current voltage and power factor with a resolution of one minute in
real-time. All energy data is stored at hourly intervals for up to 5 years with the free app
and every minute with a Premium subscription. Shelly Pro 3EM CT63 is easily set up and
controlled through the Shelly Smart Control app or your preferred Smart Home or Smart Building
system. Shelly devices work 100% locally and only require a local network to operate. Shelly
can be used alone in the Shelly Smart Control app or with more than 200 partner systems such as
Google Home Amazon Alexa Home Assistant Samsung SmartThings Athom Homey KNX and many
more. Function: Shelly Pro 3EM CT63 is designed for DIN rail mounting and comes with a single
current transformer with a hole for each phase wire. The current transformer is very compact
compared to traditional individual current transformers and fits perfectly on a three-phase
group. The device reports power measurement (W) voltage measurement (V) current measurement
(A) apparent power (VA) and power factor (PF) in real-time and stores the measurements for up
to 365 days on the device and up to 5 years online with Shelly Cloud activated. The device also
meets the requirements of IEC 62053-21 with an accuracy equivalent to Class B (maximum 1%
deviation). Shelly Pro 3EM also has a built-in real-time clock so it can maintain time and
date in case of lost connection to an SNTP server. Connection: Shelly Pro 3EM can connect to
the internet or the local network through a LAN interface and or 2.4 GHz WiFi. Additionally
the device has built-in Bluetooth like the rest of the Pro Plus and Gen3 devices so it can
also be used as a gateway for Shelly Bluetooth devices. Shelly Pro 3EM works locally without
connection to Shelly Cloud but it is recommended to activate it for easy data storage and
increased functionality. The device can also communicate via MQTT HTTP and WebSocket. All
support TLS. Shelly Pro 3EM also supports Modbus TCP connection. Hardware: The device is
equipped with a powerful ESP32 processor. This allows for scripting functions for advanced and
customized functionality as well as a range extender function with the device. Note: Shelly Pro
3EM does not have a built-in relay output. If local relay control independent of the network is
desired the Pro 3EM Switch Add-on (3800235268131) can be purchased which allows for external
relay control.
