Shelly Pro 3 is a DIN-rail three-channel smart switch with potential-free contacts, designed to control three independent circuits from a central electrical panel. The dry-contact architecture allows the switched circuits to remain electrically independent, including applications where the three relay channels serve different circuits.
Ethernet, Wi-Fi and Bluetooth connectivity are built in, together with physical inputs, schedules, scripting, webhooks, MQTT and an embedded web interface. Each channel supports up to 16 A, with a total device limit of 48 A within Shelly’s published operating conditions.