Shelly Mini 1PM Gen3 - Wiring a Switch

Mini 1PM is designed for shallow wall boxes where larger relays and smart switches don’t fit. Wiring is simple, as the relay only requires neutral, line, load, and an input from the switch. The relay can also be installed at the fixture for direct control, though using a switch in this scenario will disable the relay. If the circuit uses a switch loop, the switch can still be used as an input when the relay is wired at the fixture.

1. Turn off the breaker controlling this lighting circuit.

2. Use a voltage detector to make sure the circuit is not energized.

3. Connect a neutral wire from the load center (breaker panel) to Mini 1PM’s N terminal.

4. Connect line (hot) from the load center (breaker panel) to Mini 1PM’s L terminal.

5. Connect line (hot) from the load center (breaker panel) to the light switch’s bottom pole.

6. Connect the light switch’s top pole to Mini 1PM’s SW terminal.

7. Connect load (the wire going to your light fixture) to Mini 1PM’s O terminal.

Shelly Mini 1PM Gen3 uses Shelly’s smallest form factor enclosure. This makes the product ideal for:

• Shallow gang box installation

• Power measurement

• Switches and outlets

Note: Shelly Mini 1PM Gen3 is limited to 8 amps. It is critical to verify the total load for lighting circuits controlled by this product will not exceed the product maximum prior to installation. To determine total load of a lighting circuit, add the total draw of all bulbs used in fixtures downstream of the relay.

Shelly Plus 1PM is the best choice for use with on/off control of lighting circuits:

• 15 amp maximum capacity UL version, 16 amp maximum capacity standard version

• Power measurement

• Simplified wiring (no wire nuts or Wago connectors required)

• Over wattage protection

• Over current protection

• Over voltage protection

• Under voltage protection
  
  Note: All Shelly Plus and Pro relays offer over temperature protection.