Shelly 400A Current Transformer Pro 3EM
What is Shelly 400A Current Transformer Pro 3EM?
Current transformers scale the large values of current to small, standardized values for measuring purposes. They provide a secondary current that is accurately proportional to the current flowing in its primary circuit. The current transformer presents a negligible load to the primary circuit.
*Compatible only with Shelly Pro 3EM-400A
Diagrams

A |
Shelly CT400A |
B |
Cable tie (another one on the opposite side) |
C |
Primary conductor |
SPECIFICATIONS
Type |
Value |
|---|---|
Physical | |
Size (HxWxD): |
84x54x48 ±0.5 mm / 3.31x2.13x1.89 ±0.02 in (without the cable) |
Weight: |
290 ±1 g / 10.23 ±0.05 oz (with the cable) |
Conductor aperture: |
Ø35 mm / 1.38 in |
Core: |
Ferite |
Shell material: |
Plastic |
Color: |
White |
Environmental | |
Ambient temperature: |
-10 °C to 50 °C / 14 °F to 122 °F |
Humidity: |
0 % to 80 % RH |
Max. altitude: |
2000 m / 6562 ft |
Electrical | |
Primary/secondary current ration: |
3000/1 |
Rated max. primary current: |
400 A |
Electrical strength: |
3000 VAC, 60 sec |


















