Standard, Specialty & Custom Transformers

Single Phase Transformers

Dongan offers single phase ventilated transformers from .50 kVA to 5 kVA, and encapsulated transformers from .250 kVA through 25 kVA.
Standard enclosures are NEMA Type 3R, with some exceptions at the smallest kVA; these exceptions are indicated in our catalog.
These transformers can be wall-mounted or floor-mounted cabinet-style depending upon kVA rating, are UL and cUL listed and are copper-wound through 25 kVA

Dongan offers a full complement of three phase ventilated transformers, from 3 kVA to 300 kVA.
Encapsulated three phase transformers are available from 3 kVA through 9 kVA, and ventilated products are available for 15 kVA transformers and up.
Enclosures are NEMA Type 3R as standard, which eliminates the need for a costly weather shield. Some exceptions apply at the smallest kVA; these exceptions are indicated in our catalog.
Dongan’s three phase general purpose products have an electrostatic shield between the primary and secondary for transient noise reduction. Insulation systems are 200°C or 220°C, depending upon the series of transformer.

Dongan’s Century Series IC Control Transformer line debuted during our 100th year in business.
An exciting departure from the traditional control transformer, Century Series products are modular, have encapsulated windings and can be easily made into finger-safe, CE-approved transformers.
Secondary fuse clips are included with Century Series products. Factory-installed primary fuse kits are available options, along with fuse covers to make for completely finger-safe units.