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Compact grey DIN rail relay module with three channels

Shelly

Shelly Pro 3 three-channel DIN rail relay 48A

SKU CH-W0ZB-H3AE7

DIN-rail smart relay with three independent channels, dry contacts and up to 48 A total switching capacity for lighting, valves and motors

  • Parts2 Years
  • Three-channel DIN rail relay switches up to 48A total load
  • Each channel handles 16A maximum for independent circuit control
  • Dry contact outputs enable flexible voltage-free switching applications
  • LAN, Wi-Fi and Bluetooth connectivity for local and remote management
  • Built-in temperature, overpower and overvoltage protection enhances operational safety

Three-channel DIN rail relay 48A

The Shelly Pro 3 is a professional three-channel smart relay designed for DIN rail mounting in breaker panels. It switches up to 48 A total with a maximum of 16 A per channel using potential-free dry contacts. The unit supports LAN, Wi-Fi and Bluetooth connectivity and integrates with Google Home, Alexa and the Shelly mobile app for home and facility automation.

Check breaker panel space and circuit ratings

Verify that your distribution board has an available DIN rail slot for the module. Confirm each load you intend to switch does not exceed 16 A and that the combined draw stays within the 48 A total rating. Ensure your network provides a stable LAN, Wi-Fi or Bluetooth link for configuration and ongoing control.

Replaces standalone contactors or basic timers

This relay consolidates three separate switching devices into one DIN rail unit, adding remote scheduling and sensor-driven automation. The upgrade is worthwhile when you need independent control of lighting, valve or pump circuits with built-in temperature, overpower and overvoltage protection. It is not suited for loads that require more than 16 A per channel or for installations without DIN rail provision.

Highlights

  • Three-channel DIN rail relay switches up to 48A total load
  • Each channel handles 16A maximum for independent circuit control
  • Dry contact outputs enable flexible voltage-free switching applications
  • LAN, Wi-Fi and Bluetooth connectivity for local and remote management
  • Built-in temperature, overpower and overvoltage protection enhances operational safety

Specifications

Parts2 Years

Questions about this item

Does the package include mounting hardware or any separate accessories I need to buy for DIN rail installation?

The Shelly Pro 3 is designed for direct DIN rail mounting inside a breaker box and features dry contact outputs that connect to your existing wiring without requiring extra accessories.

Should I choose a different model if I need more than 16A on a single circuit?

Each of the three channels on this relay handles up to 16A, with a combined total of 48A, so any circuit exceeding 16A would require a different solution.

What does the 48A rating mean when I wire three separate lighting circuits?

The 48A figure is the total capacity across all three channels; each individual circuit is limited to 16A, so the combined load of your three lighting circuits must stay within 48A.

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