Products

Laminations
Nickel-Iron and Cobalt-Iron Laminations
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Ring Cores
GFCI and ALCI ring cores
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Tape wound cores
Grain Oriented Silicon Steel, Nickel-Iron, Cobalt-Iron, Nanocrystalline and Amorphous
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Cut cores
Grain Oriented Silicon Steel,
Nickel-Iron, Cobalt-Iron, Nanocrystalline and Amorphous
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Contract Manufacturing
Toroidal and bobbin winding of magnet wire, automatic pin insertion and other assembly procedures
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Prototypes and Special Components
Laser Cut (Loose laminations and Welded cores) and
Chemi-Etched laminations
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Tooling
Precision progressive carbide dies
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Ring Cores

Ring cores made of thermally stable supermalloy and wound with 1000 turns are excellent transformers. Originally developed for ground fault detection current, they are now used in many current-sensing applications.  In a GFCI circuit breaker or electrical outlet, these cores constantly monitor electrical current and protect against injury or death caused by contact with damaged or defective electrical equipment.  In the ALCI plug, the cores are used to protect people from electrical shock by hairdryers or other appliances.  (They can have many uses in other applications).

Magnetic Metals manufactures standard size sensor cores of supermalloy for sensing fault current as well as cores made of ferrite for ground to neutral detection.  Sensing and neutral detection cores are available in a wide variety of sizes and type to fill any GFCI, Arc Fault or current sensing requirement.

The unique heat treating furnace and annealing process produce the highest quality magnetic components.  Fully automated casing and 100% testing provides customers with the most price competitive products and the best production yields in the industry.

As the largest supplier of sensor cores in the industry, Magnetic Metals' Engineering Staff are ready to assist with any design consideration and performance issues.

 

Ring Cores For GFCI and ALCI


CORES FOR GFCI   -  5000 SERIES (80 % Nickel Alloy - 0.33 mm thick)
CCORES FOR ALCI -  5100 SERIES (80 % Nickel Alloy - 0.33 mm thick)


Sorted by Ring ID:

Ring Core

Colour

Dimensions (mm) - Ring Stack

Dimensions (mm) - Cased Unit

l (cm)

A (cm)

Approx. No. of Rings per Core

ID

OD

Ht

ID

OD

Ht

5025

Green

7.75

10.29

3.02

6.73

11.56

4.95

2.83

0.0383

9

5029

Blue

8.84

12.19

1.68

7.75

13.46

2.74

3.3

0.0281

5

5137

Yellow

8.84

12.19

1.68

7.75

13.46

2.74

3.3

0.0281

5

5042

Black

9.53

12.7

1.68

8.13

14.22

2.87

3.49

0.0266

5

5022

Clear

9.53

12.7

3.02

8.13

14.22

4.95

3.49

0.0479

9

5040

Black

11.07

14.27

2.01

9.53

15.88

3.81

3.98

0.0322

6

5026

Blue

11.07

14.27

3.35

9.53

15.88

5.33

3.98

0.0536

10

5126

Gray

11.07

14.27

3.35

9.53

15.88

5.33

3.98

0.0536

10

5050

Black

13.28

17.91

1.68

11.81

19.69

3.56

4.9

0.0387

5

5150

Black

13.28

17.91

1.68

11.81

19.69

3.56

4.9

0.0387

5

5052

Black

15.24

19.2

2.01

13.72

20.83

3.68

5.41

0.0398

6

5002

Black

16.08

21.44

3.02

14.22

23.5

4.95

5.89

0.0808

9

5045

Black

25.4

31.75

3.02

23.37

33.91

4.95

9.02

0.0996

9


Sorted by Core Part no.:

Ring Core

Colour

Dimensions (mm) - Ring Stack

Dimensions (mm) - Cased Unit

l (cm)

A (cm2)

Approx. No. of Rings per Core

ID

OD

Ht

ID

OD

Ht

5002

Black

16.08

21.44

3.02

14.22

23.5

4.95

5.89

0.0808

9

5022

Clear

9.53

12.7

3.02

8.13

14.22

4.95

3.49

0.0479

9

5025

Green

7.75

10.29

3.02

6.73

11.56

4.95

2.83

0.0383

9

5026

Blue

11.07

14.27

3.35

9.53

15.88

5.33

3.98

0.0536

10

5029

Blue

8.84

12.19

1.68

7.75

13.46

2.74

3.3

0.0281

5

5040

Black

11.07

14.27

2.01

9.53

15.88

3.81

3.98

0.0322

6

5042

Black

9.53

12.7

1.68

8.13

14.22

2.87

3.49

0.0266

5

5045

Black

25.4

31.75

3.02

23.37

33.91

4.95

9.02

0.0996

9

5050

Black

13.28

17.91

1.68

11.81

19.69

3.56

4.9

0.0387

5

5052

Black

15.24

19.2

2.01

13.72

20.83

3.68

5.41

0.0398

6

5126

Gray

11.07

14.27

3.35

9.53

15.88

5.33

3.98

0.0536

10

5137

Yellow

8.84

12.19

1.68

7.75

13.46

2.74

3.3

0.0281

5

5150

Black

13.28

17.91

1.68

11.81

19.69

3.56

4.9

0.0387

5

 

Note:  All cores that use the 3081 ring (5029, 5149, 5137, 5151) have been calculated using a material thickness of 0.35 mm as opposed to the actual 0.33 mm.  Additionally, the 5029 core calculations are based on a 4 rings core, instead of 5 rings in order to remain consistent with the original 5029 core, made with 4 rings of 0.35 mm thickness.

 

 
 
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