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Made in Salisbury, MD USA   |   (410) 860-0300   |   ISO 9001 Certified click icon to download

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Auto Transformers

  • Standard Design
  • Recognized to UL506
  • C-UL Certified to CSA C22.2 No. 66
  • From 250 VA to 1000VA
  • Other Power Ratings Available on Request



Using an auto-transformer is always an economical solution when you need to step down the voltage from 230V to 120 V or vice versa, and the equipment already has a fully isolated transformer or when the components do not require an isolated transformer.

The toroidal construction of an auto-transformer offers important advantages in comparison with an E/I lamination core transformer, like smaller physical size and weight, 30-70% reduction (depending on secondary voltage) and very low magnetic strayfields. The auto-transformer can be mounted horizontally using a steel washer or our Poly-Mount, a plastic insert, or an epoxy potted center with a 1/4" mounting hole. See our Mounting and Hardware page for more information.

With its small size and weight, the auto-transformer can be installed easily in existing equipment or supplied in an optional enclosure with or without cord, plug and receptacle.

Data

Order TCM
Part No.
(Data
Sheet)
Power
VA
No-Load
Losses
Temp. Rise at
Full Load
Dimensions Weight
Inches mm Lbs. Kg.
Step-Up From 120V to 230V, 60 Hz Operation
Price A5615 250 0.7W 45ºC 3.9 x 1.7 99 x 43 2.6 1.2
Price A5616 500 1.2W 55ºC 4.5 x 1.9 114 x 49 4.2 1.9
Price A5617 750 1.5W 58ºC 5.0 x 2.3 127 x 59 5.8 2.6
Price A5618 1000 2.0W 63ºC 5.5 x 2.3 140 x 59 7.1 3.2
Step-Down From 230V to 120V, 50-60Hz Operation
Price A5620 250 0.7W 54ºC 3.7 x 1.8 94 x 46 2.6 1.2
Price A5621 500 1.3W 50ºC 4.5 x 2.2 114 x 56 4.8 2.2
Price A5622 750 1.7W 55ºC 5.5 x 2.1 140 x 53 6.5 2.9
Price A5623 1000 2.3W 56ºC 5.5 x 2.5 140 x 64 8.3 3.8

Mounting Options

Step-Up from 120V to 230V, 60Hz Operation
Part No. Poly-Mount L-Bracket Omega Bracket Washers & Pads
A5615 80/22 L-120 #3 70
A5616 100/22 L-300 #4 90
A5617 100/32 L-625 #5 110
A5618 115/32 L-625 #5 110
Step-Down from 230V to 120V, 50-60Hz Operation
Part No. Poly-Mount L-Bracket Omega Bracket Washers & Pads
A5620 80/22 L-120 #3 70
A5621 100/32 L-300 #4 90
A5622 115/32 L-625 #5 110
A5623 115/32 L-625 #5 110

Terms and Conditions

  • For larger quantity prices, please contact the factory directly.
  • Prices and data subject to change without prior notice
  • Delivery: Small quantities of standards are normally available from stock
  • 30-Day Return Policy of Undamaged Items - 15% Restocking Fee on Standard Transformers
  • 36 Month Product Warranty
  • Terms and Conditions