Description
Shelly CT 400A Split-Core Current Transformer for Shelly Pro 3EM-400
The Shelly CT 400A is a split-core current transformer designed for accurate alternating current measurements up to 400 A, ideal for energy monitoring in single-phase or three-phase systems. Compatible with the Shelly Pro 3EM-400, it allows for quick installation without interrupting the circuit, thanks to its snap-on mechanism that eliminates the need for tools.
The construction with openable ferrite and durable plastic housing ensures longevity, while the dielectric strength of 3000 VAC (60 s) ensures protection and stability in residential, commercial, and industrial environments.
Technical Specifications:
Brand: Shelly
Model: Shelly CT 400A
Nominal primary current: 400 A
Nominal secondary current: 133.33 mA
Transformation ratio: 3000:1
Internal diameter for conductor: Ø 35 mm
Dielectric strength: 3000 VAC (60 s)
Operating temperature: -10 °C to 50 °C
Allowable humidity: 0–80 % RH
Maximum altitude: 2000 m
Core: Openable ferrite
Housing material: Plastic
Color: White
Dimensions: (H × W × D): 84 × 54 × 48 mm ±0.5 mm
Weight: 290 g ±1 g (with cable)
Connector: MX3.0-2x1Y, 2 pins
Compatibility: Shelly Pro 3EM-400
Includes:
1 × Shelly CT 400A
1 × Integrated cable
1 × Basic installation documentation
Reference: SHTCNDPROEM
Barcode: 3800235266496





