Nanocrystalline toroidal core 50×35×20 mm
50×35×20 mm nanocrystalline toroidal core, Blue colored Powder Coating.
CCNT-050-035-020-LFBL is a 50×35×20 mm nanocrystalline toroidal core with Blue powder coating. Bare size is 50×35×20 mm. Finished (coated) size is 50.5×34.3×20.1 mm.
In stock
$10.80Pack of 3
$3.60 per piece
Choose a pack, set quantity up to 16 of this pack (48 pieces), then add to cart. When the cart has items, use the cart icon in the header to review them and keep shopping before checkout.
Loading checkout…
Volume pricing
Online packs are $10.00 minimum. Buy packs totaling under 50 pieces. 50+ is quoted.
| Pack / qty | Unit price | How to buy |
|---|---|---|
| Pack of 3 | $3.60 | Buy online |
| Pack of 5 | $4.05 | Buy online |
| Pack of 10 | $3.60 | Buy online |
| 50+ pieces | Quoted | Request quote |
Technical Specifications
Bare core dimensions
Cased / finished dimensions
Magnetic properties
AL is one turn through the window (Kelvin clips) at 0.3 V. It is not a 2 mT small-signal AL. At 1 kHz this drive saturates the smaller cores.
Finish and handling
Environmental
Product photos
Applications and selection
Recommended usage
- high-current metering CTs
- protective relay CTs
- prototype magnetics
DIY & R&D usage
- DIY current-sensing builds
- benchtop transformer prototyping
- hobbyist magnetics experiments
Technical applications
- high-current metering CTs (powder-coated LF toroid)
- protective relay CTs (powder-coated LF toroid)
- prototype magnetics (powder-coated LF toroid)
When to choose this size
Choose CCNT-050-035-020-LFBL when you need this 50×35×20 mm powder-coated toroid. Use the bare dimensions for the magnetic path and the finished inner diameter (34.3 mm) for winding clearance.
Winding notes
Magnetic calculations should use the bare 50×35×20 mm geometry (Ae 1.23 cm², Le 13.35 cm, stacking factor 0.82). AL is one turn through the window (Kelvin clips) at 0.3 V: 30 µH at 1 kHz, 24 µH at 10 kHz, and 4 µH at 100 kHz. This is not a 2 mT small-signal AL. At 1 kHz this drive saturates the smaller cores. Size the winding to the finished ID 34.3 mm, not the 35 mm bare ID. Saturation is 1.25 T. Core continuous temperature is -40°C to +150°C. Powder-coat temperature class is not published.
Related application guides
Frequently asked questions
Are the stated dimensions bare or finished?
The size in the product name is the bare core (50×35×20 mm). Finished coated size is 50.5×34.3×20.1 mm.
How was AL measured?
One turn: Kelvin clips through the window at 0.3 V. AL is 30 µH at 1 kHz, 24 µH at 10 kHz, and 4 µH at 100 kHz. This is not a 2 mT small-signal AL. At 1 kHz this drive saturates the smaller cores. Verify inductance on the wound part.
Where is a core this size used?
This 50×35×20 mm powder-coated toroid is used for high-current metering and protective-relay current transformers. The 34.3 mm finished window and 20 mm height fit larger cable and more secondary turns, including EV charger and power-distribution current sensing.
Need this core for your application?
Get pricing, availability, and winding support for CCNT-050-035-020-LFBL.