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Stay up-to-date on events, transformer best-practices, industry news, and special offers from Maddox.

Cast coil and encapsulated transformers provide resin-sealed protection and maintenance-free performance for critical applications.

Maddox is now a NECA Ambassador Sponsor. NECA and Maddox work to help electrical contractors get the transformers they need, when they need them.

Zig-zag transformers offer cost-effective system grounding and harmonic mitigation. Learn what they are, how they work, and when to use them.

New to transformers? Check out our article below on what they are, why we need them, how they work, and some common types.

Manuals for our 3-Phase Padmount, Unit Substation Dry-Type, 600v Dry Type, and Encapsulated/Potted Dry Type Transformers.

Common transformer related terminology and definitions.

Our standard terms and conditions as well as our different product warranties.

Information about becoming a Maddox wholesale partner and the benefits included.

Our standard webstore returns and refund policy. This only applies for general purpose low voltage dry-type transformers purchased online.

Fill out this form if you bought the wrong transformer, or if you received the incorrect unit.

Our webstore shipping and delivery policy. This only applies for general purpose low voltage dry-type transformers purchased online.

Please submit your any warranty claim inquires with this form.

Information about our website terms of service.