isolation transformers

Machine Tool & Isolation Transformers


  • Input: 240/480 V, 50/60 Hz. Parallel / Series. 208 V tap optional.
    Output: 120/240 V, 50/60 Hz. Parallel / Series. Single 115 V or 230 V output optional.
  • May be operated in reverse for step-up. (Note: Reduced output voltage when operated in reverse.)
  • UL / C-UL Recognized. UL File: E19598.
  • UL Recognized Class 130 (B) Insulation System. UL File: E50662.
Machine Tool Transformers:

Designed to operate in a 40o C ambient.
Available with flying leads or terminals.
Available in a UL / C-UL Listed version with Class 180 (H) Insulation System.
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Model: Capacity: A B C D E F G H I
15728-R 0.025 kVA 2 1/3 2    1    3 1/8 1 7/8 1 4/7 2 1/5  1/5  2/7
12314-R 0.050 kVA 3    2 4/7 1    3 1/4 2 1/2 2    2 5/8  1/5  3/8
13092-R 0.075 kVA 3    2 4/7 1 1/2 3 3/4 2 1/2 2 1/2 3 1/8  1/5  3/8
12315-R 0.100 kVA 3 4/9 2 7/8 1 3/8 3 3/4 2 4/5 2 3/8 3     1/5  3/8
12316-R 0.150 kVA 3 4/5 3 1/5 1 7/8 4 1/4 3 1/8 2 7/8 3 1/2  1/5  3/8
13706-R 0.175 kVA 3 4/5 3 1/5 1 7/8 4 1/4 3 1/8 2 7/8 3 1/2  1/5  3/8
13754-R 0.200 kVA 4 4/7 3 2/3 1 3/8 4 1/4 3 3/4 2 3/8 3     1/5  3/8
12317-R 0.250 kVA 4 4/7 3 2/3 1 7/8 4 3/4 3 3/4 2 7/8 3 1/2  1/5  3/8
12318-R 0.350 kVA 4 4/7 3 2/3 2 3/4 5 1/2 3 3/4 3 3/4 4 3/8  1/5  3/8
12319-R 0.500 kVA 5 1/3 4 4/9 2 3/4 5 5/8 4 3/8 3 7/8 4 3/4  2/7  2/5
12320-R 0.750 kVA 5 1/3 4 4/9 4 7 1/8 4 3/8 5 1/8 6     2/7  2/5
12321-R 1.000 kVA 6 1/5 5 3/4 3 7 3/8 5 1/4 4 1/8 5 3/8  2/7  4/7
12322-R 1.500 kVA 7 1/8 6 1/8 3 3/8 7 3/4 5 4/5 4 7/8 5 3/4  2/7  4/7
12323-R 2.000 kVA 7 1/8 6 1/8 4 1/4 8 3/4 5 4/5 5 3/4 6 5/8  2/7  4/7
12408-R 3.000 kVA 9 1/8 8    3 1/2 9 1/4 8 1/4 4 5/8 6     2/7  4/7
12409-R 5.000 kVA 9 1/8 8    6    12 1/4 8 1/4 7 1/8 8 1/2  2/7  4/7


  • Input: 240/480 V, 50/60 Hz. Parallel / Series. 208 V tap optional.

  • Output: 120/240 V, 50/60 Hz. Parallel / Series. Single 115 V or 230 V output optional.

  • Electrostatic shield between primary and secondary windings for improved isolation and safety.

  • May be operated in reverse for step-up. (Note: Reduced output voltage when operated in reverse.)

  • UL / C-UL Listed. UL File: E19598.

  • UL Recognized Class 180 (H) Insulation System. UL File: E50662.

  • Designed to operate in a 40o C ambient.

Isolation Transformers:

Designed for use in Industrial Controls, Commercial Appliances, Vending Machines and other applications requiring an isolated step-down transformer and benefitting from the increased level of isolation and noise reduction provided by the Electrostatic Shield.

Model: Capacity: A B C D E F G H I
15740 0.025 kVA 2 1/3 2    1    3 1/8 1 7/8 1 4/7 2 1/5  1/5  2/7
15741 0.050 kVA 3    2 4/7 1    3 1/4 2 1/2 2    2 5/8  1/5  3/8
15742 0.075 kVA 3    2 4/7 1 1/2 3 3/4 2 1/2 2 1/2 3 1/8  1/5  3/8
15743 0.100 kVA 3 4/9 2 7/8 1 3/8 3 3/4 2 4/5 2 3/8 3     1/5  3/8
15744 0.150 kVA 3 4/5 3 1/5 1 7/8 4 1/4 3 1/8 2 7/8 3 1/2  1/5  3/8
15745 0.175 kVA 3 4/5 3 1/5 1 7/8 4 1/4 3 1/8 2 7/8 3 1/2  1/5  3/8
15746 0.200 kVA 4 4/7 3 2/3 1 3/8 4 1/4 3 3/4 2 3/8 3     1/5  3/8
15747 0.250 kVA 4 4/7 3 2/3 1 7/8 4 3/4 3 3/4 2 7/8 3 1/2  1/5  3/8
15748 0.350 kVA 4 4/7 3 2/3 2 3/4 5 1/2 3 3/4 3 3/4 4 3/8  1/5  3/8
15749 0.500 kVA 5 1/3 4 4/9 2 3/4 5 5/8 4 3/8 3 7/8 4 3/4  2/7  2/5
15750 0.750 kVA 5 1/3 4 4/9 4 7 1/8 4 3/8 5 1/8 6     2/7  2/5
15751 1.000 kVA 6 1/5 5 3/4 3 7 3/8 5 1/4 4 1/8 5 3/8  2/7  4/7
15752 1.500 kVA 7 1/8 6 1/8 3 3/8 7 3/4 5 4/5 4 7/8 5 3/4  2/7  4/7
15753 2.000 kVA 7 1/8 6 1/8 4 1/4 8 3/4 5 4/5 5 3/4 6 5/8  2/7  4/7
15754 3.000 kVA 9 1/8 8    3 1/2 9 1/4 8 1/4 4 5/8 6     2/7  4/7
15755 5.000 kVA 9 1/8 8    6    12 1/4 8 1/4 7 1/8 8 1/2  2/7  4/7

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