Shelly Pro Circuit Breakers

Discover our new range of Shelly Pro Circuit breakers

Shelly Pro CB is a range of smart DIN rail MCBs, built for professionals who want to combine traditional circuit protection with remote monitoring and control. The range is available in 1-, 2-, 3- and 4-pole variants (Pro 1CB–4CB) and rated currents of 10–63 A, with tripping characteristics B or C and a short-circuit breaking capacity of 6 kA. In addition to the mechanical fuse function, the Pro CB monitors the voltage in real time and trips in the event of over- or undervoltage, with the option to disconnect the device remotely – for example in the event of a water leak or for planned maintenance. A mechanical safety switch prevents accidental remote tripping, and all events are logged with a time stamp for traceability. Connection is via Ethernet, Wi-Fi or Bluetooth, and the device can also act as a BLE gateway and Wi-Fi repeater in the installation. No hub required – control locally or connect to Shelly Cloud for remote access. Support is available for MQTT, HTTP and WebSocket, as well as integration with Home Assistant, Google, Alexa and Samsung SmartThings. For automation and operational monitoring, Pro CB offers scheduling, webhooks, JavaScript-based scripting and export of event logs in CSV/JSON – a good basis for troubleshooting and documentation towards customers. Shelly Pro CB is CE and UKCA marked and complies with IEC 60898-1 – safe protection with smart functions, for installations where you need to be able to act quickly remotely.