Autotransformer Combination Panels

Autotransformers are used to reduce the starting voltage on a motor. Once running, the motor receives full line voltage for normal operation. The combination panels listed in this section are complete motor control packages used in applications requiring a disconnecting means, starting circuitry, and motor overload protection. Please consult factory for submersible applications.

New Utility Transformers allow higher available Fault Currents. When advised, we can provide controls with proper interrupting ratings. Short Circuits may cause welding, which is not considered a failure of the Contactor. (see UL508, Para 53)

Autotransformer Combination panels include:

  • NEMA 3R Enclosure;
  • Main circuit breaker with lockable handle;
  • 3 Magnetic Contactors;
  • Transition timer;
  • Motor starting autotransformer;
  • Adjustable thermal overload protection;
  • Reset pushbutton;
  • Fused control circuit;
  • Hand-Off-Auto selector switch with pushbutton (Start & Bypass);
  • Terminal block for remote device.

Download Operation Manual for Standard Autotransformer Panel

  460V 3-phase
HP Catalog # List
20 PA43/020 5676
25 PA43/025 5779
30 PA43/030 5793
40 PA43/040 5908
50 PA43/050 6097
60 PA43/060 6659
75 PA43/075 7654
100 PA43/100 8053
125 PA43/125 10605
150 PA43/150 11089
200 PA43/200 13721
250 PA43/250 16020
300 PA43/300 21921
350 PA43/350 24269
400 PA43/400 26970
450 PA43/450 29956
500 PA43/500 29956
Over 500 Call for Quote  

Prices are subject to change without notice

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