CD Soft Magnetic Silicon Steel Split Cores for Superior Performance Reactor
Sep 29, 2025
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CD Soft Magnetic Silicon Steel Split Core Product Description

A soft magnetic silicon steel split core is a magnetic core made from a ferrosilicon alloy (silicon steel) with a high magnetic permeability and low core losses, which is cut or split into two or more pieces for easier installation around conductors or for specific device designs.
The silicon in the steel increases electrical resistivity, reducing eddy currents and energy loss, while the soft magnetic material properties ensure easy magnetization and demagnetization, making it ideal for AC applications like transformers and current sensors.
How it Works
- Soft Magnetic Material:
Silicon steel is a "soft" magnetic material because it has low coercivity, meaning it can be easily magnetized and demagnetized without retaining significant residual magnetism. This is crucial for efficiency in alternating current (AC) applications.
- High Permeability:
The addition of silicon increases the magnetic permeability of the steel, allowing it to concentrate and guide magnetic field lines more effectively than air.
- Reduced Core Losses:
High electrical resistivity in silicon steel minimizes eddy current losses-circulating currents that generate heat and waste energy within the core when subjected to a changing magnetic field.
- Lamination:
The core is made of thin, laminated sheets of silicon steel, each with an insulating layer. This structure further impedes the flow of eddy currents, further reducing energy loss.
- Split Design:
The core is split into two or more pieces. This design allows it to be installed around existing conductors, such as power cables, without needing to disconnect them, which is a significant advantage in certain applications like clamp-on current transformers.
CD Soft Magnetic Silicon Steel Core Applications
Split-core designs made from soft magnetic silicon steel are used in a variety of devices:
- Current Transformers: For measuring AC currents without breaking the circuit.
- Inductors and Reactors: In electrical circuits where energy storage or limiting current is required.
- Sensors: For detecting magnetic fields or monitoring electrical parameters.
- Transformers: For step-up or step-down voltage in power distribution systems.
Silicon Steel core specifications
|
Uasage |
Transformer Instrument |
|
Phase |
Single |
|
Material |
CRGO grain oriented electrical steel |
|
Thickness |
0.23~0.35 |
|
Max Core Loss 1.7T/50HZ |
110 |
|
Place of Origin |
Henan China |
|
Frequency |
400HZ |
|
Delivety Time |
Within 20 days |
|
Surface Treatment |
Coated |
GNEE Featured Products
Gnee provides premium iron cores to the world. Our cores can be selected in a wide range of materials, shapes, applications, manufacturing techniques, etc., to meet customers' diverse demands. Explore our wide product range now~
Manufacturing Process

1. Raw Material Sourcing

2. Slitting

3. Punching

4. Laminating

5. Core Forming

6. testing
GNEE EC
Founded in 2008 and located in Anyang in China, Gnee Electric is a high-tech enterprise specializing in researching and manufacturing iron core products.
The company currently occupies over 20,000 square meters and employs more than 200 people, including over 80 professionals. After more than 18 years of development, we have built our own magnetic material production base and independently develope, produce, and sell various kinds of iron cores. The common types include silicon steel cores, motor cores, transformer cores, toroidal iron cores, special-shaped cores, custom cores, and others. Our cores are widely applied in different sectors including transformers, motors, mutual inductors, voltage stabilizers, welding machines, magnetic amplifiers, and instrumentation, providing diverse core solutions to global customers.

30+
Types of Products
18k+
Happy Clients
Why Choose GNEE EC?
GNEE EC was founded in 2008, which is a National High-tech Enterprise & Famous Brand Enterprise in China, developing into a professional manufacturer and supplier of high-quality iron cores.
18+
Over 18 years of success in the iron core industry;
National High-tech Enterprise & Famous Brand Enterprises in China;
200+
Over 200 employees;
The R&D team has more than 80 experienced engineers and the production team has more than 100 skilled staffs;
35+
Annual turnover up to 35 million dollor per year;
Owns many sets of highly automatic winding, annealing, and assembling machines;
1,000+
Over 1000 customers in domestic and overseas markets;
core Products are exported to more than 70 countries in the world;
Gnee Iron Core Factory Overview






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