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Device identification
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Device name: Shelly Pro 3EM Switch Add-on
Short description
Shelly Pro 3EM Switch Add-on (the Device) is a galvanically isolated switch that extends the features of the Shelly Pro 3EM series of devices allowing the control of contactors or other electrical appliances.
Main applications
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Residential
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MDU (Multi Dwelling Units - apartments, condominiums, hotels, etc.)
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Light commercial (small office buildings, small retail/restaurant/gas station, etc.)
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Industrial (factories, power plants, water processing, refineries, etc.)
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Agricultural (farms, barns, silos, etc.)
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Government/municipal
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University/college
Simplified internal schematics
Device electrical interfaces
Inputs
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1 load circuit input I
Outputs
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1 load circuit output O
Add-on interface
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Shelly proprietary serial interface
?CAUTION! High voltage on the add-on interface when the Device is powered!
Safety features
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Internal temperature sensing and reporting
Supported load types
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Resistive (incandescent bulbs, small heating devices)
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Capacitive (LED light drivers, capacitor banks, electronic equipment)
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Inductive (contactors, transformers, fans, refrigerators)
User interface
Outputs
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LED indication
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Power: Red light if the power supply is connected.
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Out: Red light if the output relay contact is closed.
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Specifications
|
Type |
Value |
|---|---|
|
Physical |
|
|
Size (HxWxD): |
94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in |
|
Weight: |
20 ±1 g / 0.70 ±0.05 oz |
|
Mounting: |
DIN rail, attached to a Shelly Pro 3EM |
|
Screw terminals max torque: |
0.4 Nm / 4.43 lbin |
|
Conductor cross section: |
0.5 to 2.5 mm? / 20 to 14 AWG (solid, stranded and bootlace lugs) |
|
Conductor stripped length: |
6 to 7 mm / 0.24 to 0.28 in |
|
Shell material: |
Plastic |
|
Color: |
White |
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Environmental |
|
|
Ambient temperature: |
-20 °C to 40 °C / -5 °F to 105 °F |
|
Humidity: |
30 % to 70 % RH |
|
Max. altitude: |
2000 m / 6562 ft |
|
Electrical |
|
|
Power supply voltage AC: |
N/A |
|
Power supply voltage DC: |
3.3 V and 12 V (from Shelly Pro 3EM device) |
|
Power consumption: |
< 1 W |
|
Sensors, meters |
|
|
Internal-temperature sensor: |
Yes |
|
Output circuits ratings |
|
|
Max switching voltage AC: |
240 V |
|
Max switching voltage DC: |
30 V |
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Max switching current AC: |
2 A |
|
Max switching current DC: |
2 A |
Basic wiring diagrams
|
Resistive load |
Inductive load and RC snubber |
Legend
|
Terminals |
Wires |
||
|---|---|---|---|
|
O |
Load circuit output terminal |
L |
Live (110-240 V) wire |
|
I |
Load circuit input terminal |
N |
Neutral wire |
Components and APIs
Compliance
Shelly Pro 3EM Switch Add-on multilingual EU declaration of conformity.pdf
Printed user guide
Shelly Pro 3EM Switch Add-on multilingual printed user and safety guide.pdf
