Isolation Transformers

Foster's Isolation Transformers build on the rugged reliability of our Machine Tool Control transformers adding a Faraday shield and Class 180 (H) Insulation System.

The Faraday shield reduces the capacitive coupling between the primary and secondary windings attenuating common mode noise and enhances safety by providing a grounded connection between the inputs and outputs.

Transformers are shown with screw terminals, but can be ordered with flexible lead wires or a variety of terminal blocks.

Don't see what you need? Call, fax, or email. Foster has over 16,000 designs in its database and we develop new designs for our customers everyday.

Foster Transformer Company is the perfect choice for custom and standard isolation transformers designed to comply with UL 506, UL 60950-1, UL 60601-1, EN 61558-1 and EN 60601-1. 

Whether you manufacture Industrial Controls, Commercial Appliances, Medical Equipment or something entirely new, Foster has the experience to find the right solution for your problem.

We have two Isolation transformer types, the 1:1-2:1-1:2 Isolation Transformer and standard Isolation Transformer.

If you need a custom transformer solution, please contact us for more information. 

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Isolation Transformers

 
1:1-2:1-1:2 Isolation Transformers
  • Input Voltages: 120/208/240 V, 50/60 Hz.
     
  • Output Voltages: 120/208/240 V, 50/60 Hz.
     
  • Power Ratings: 0.025 kVA (25 VA) to 5.0 kVA.
     
  • Electrostatic Shield between Windings for Safety and Suppression of transients and
    electrical noise. 
     
  • UL Listed and C-UL Certified, UL 5085 / CSA 22.2No.66,UL File Number: E19598.
     
  • EN 61558-1 Compliant Designs Available.
     
  • Suitable for Use with Medical EN 60601-1
    Devices.
     
  • Higher Efficiency & Lower Temperature Rise than competitors.
     
  • Class 180 Insulation Systems for long life.                                                    

Download IsolationTransformer pdf

Isolation Transformer

Model:

Capacity:

A

B

C

D

E

F

G

H

I

16340

0.025 kVA

2-11/16

2-1/4

1

3

2-3/16

2

2-5/8

13/64

3/8

16341

0.050 kVA

3-1/16

2-9/16

1

3

2-1/2

2

2-5/8

13/64

3/8

16342

0.075 kVA

3-1/16

2-9/16

1-1/2

3-1/2

2-1/2

2-1/2

3-1/8

13/64

3/8

16343

0.100 kVA

3-7/16

2-7/8

1-3/8

3-3/8

2-13/16

2-3/8

3

13/64

3/8

16344

0.150 kVA

3-13/16

3-3/16

1-7/8

4-1/8

3-1/8

2-7/8

3-1/2

13/64

3/8

16345

0.175 kVA

3-13/16

3-3/16

1-7/8

4-1/8

3-1/8

2-7/8

3-1/2

13/64

3/8

16346

0.200 kVA

4-9/16

3-13/16

1-3/8

4-3/8

3-3/4

2-3/8

3

13/64

3/8

16347

0.250 kVA

4-9/16

3-13/16

1-7/8

4-7/8

3-3/4

2-7/8

3-1/2

13/64

3/8

16348

0.350 kVA

4-9/16

3-13/16

2-3/4

5-3/4

3-3/4

3-7/8

5-1/8

9/32

9/16

16349

0.500 kVA

5-5/16

4-7/16

2-3/4

6

4-3/8

3-7/8

5-1/8

9/32

9/16

16350

0.750 kVA

5-5/16

4-7/16

4

7-1/4

4-3/8

5-1/8

6-3/8

9/32

9/16

16351

1.000 kVA

6-1/2

5-7/16

3

6-5/8

5-5/16

4-1/2

5-7/8

5/16

11/16

16352

1.500 kVA

7-3/16

6-3/16

3-3/8

7-1/2

5-13/16

4-7/8

6-1/4

5/16

11/16

16353

2.000 kVA

7-3/16

6-3/16

4-1/4

8-3/8

5-13/16

5-3/4

7-1/8

5/16

11/16

16354

3.000 kVA

9-1/8

8-1/4

3-1/2

9

8

5-3/4

7-1/2

3/8

1

16355

5.000 kVA

9-1/8

8-1/4

6

11-1/2

8

8-1/4

10

3/8

1

Applications:
Ideal for use in adapting equipment for InternationalUse. Flexible configuration may be used in 1:1 isolation or 2:1 step-down or 1:2 step-up configuration. Suitable for use in medical equipment to isolate commercial devices from mains power. May be used to protect sensitive equipment subjected noisy industrial power lines.

Isolation Transformers

  • Input  Voltages: 208/240/480 V, 50/60 Hz.
     
  • Output Voltages: 120/208/240 V, 50/60 Hz. 
     
  • Electrostatic shield between windings for safety and suppression of transients and electrical noise. 
     
  • UL Listed / C-UL Certified, UL 5085/CSA 22.2 No. 66, UL File Number: E19589.  
     
  • EN 61558-1 Compliant Designs Available.
     
  • Higher Efficiency & Lower Temperature Rise than competitors.
     
  • Class 180 insulation systems for long life.
     
  • Suitable for use in Elevated Ambients.
     
  • Custom Configurations are available.
                                                     

Download Isolation Transformer pdf

Isolation Transformer

Model:

Capacity:

A

B

C

D

E

F

G

H

I

15740

0.025 kVA

2-11/16

2-1/4

1

3

2-3/16

2

2-5/8

13/64

3/8

15741

0.050 kVA

3-1/16

2-9/16

1

3

2-1/2

2

2-5/8

13/64

3/8

15742

0.075 kVA

3-1/16

2-9/16

1-1/2

3-1/2

2-1/2

2-1/2

3-1/8

13/64

3/8

15743

0.100 kVA

3-7/16

2-7/8

1-3/8

3-3/8

2-13/16

2-3/8

3

13/64

3/8

15744

0.150 kVA

3-13/16

3-3/16

1-7/8

4-1/8

3-1/8

2-7/8

3-1/2

13/64

3/8

15745

0.175 kVA

3-13/16

3-3/16

1-7/8

4-1/8

3-1/8

2-7/8

3-1/2

13/64

3/8

15746

0.200 kVA

4-9/16

3-13/16

1-3/8

4-3/8

3-3/4

2-3/8

3

13/64

3/8

15747

0.250 kVA

4-9/16

3-13/16

1-7/8

4-7/8

3-3/4

2-7/8

3-1/2

13/64

3/8

15748

0.350 kVA

4-9/16

3-13/16

2-3/4

5-3/4

3-3/4

3-7/8

5-1/8

9/32

9/16

15749

0.500 kVA

5-5/16

4-7/16

2-3/4

6

4-3/8

3-7/8

5-1/8

9/32

9/16

15750

0.750 kVA

5-5/16

4-7/16

4

7-1/4

4-3/8

5-1/8

6-3/8

9/32

9/16

15751

1.000 kVA

6-1/2

5-7/16

3

6-5/8

5-5/16

4-1/2

5-7/8

5/16

11/16

15752

1.500 kVA

7-3/16

6-3/16

3-3/8

7-1/2

5-13/16

4-7/8

6-1/4

5/16

11/16

15753

2.000 kVA

7-3/16

6-3/16

4-1/4

8-3/8

5-13/16

5-3/4

7-1/8

5/16

11/16

15754

3.000 kVA

9-1/8

8-1/4

3-1/2

9

8

5-3/4

7-1/2

3/8

1

15755

5.000 kVA

9-1/8

8-1/4

6

11-1/2

8

8-1/4

10

3/8

1

Applications:
Ideal for use in adapting equipment designed to operate from commercial voltages to higher industrial voltages. May be used in a 1:1 isolation or 2:1 step-down configuration to adapt equipment designed for the North American market for Global Sales. Common applications include Industrial Controls, Commercial Appliances, Medical Equipment, Machine Tool Equip.




 



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