Marcus Transformer Quality
April 28, 2026
Marcus Transformer Quality
Marcus Transformer’s History
They been making energy efficient electrical transformers with the best prices for over 50 years.
For over 60 years of manufacturing a wide range of transformers and three generations of ownership, their philosophy has not changed. Their goal at Marcus Transformer has always been to provide the customer with the highest quality products and the best service in the industry. They know that there are no shortcuts to achieving this goal.
Marcus proved to become an industry leader in the United States and Canada, manufacturing top quality electrical transformers. Among their notable achievements are new insulation materials to increase transformer life, unique magnetic cores to reduce sound levels, and over 40 percent annual energy savings compared to competitive makes. Today, their patented WATT+ PLUS TM technology which incorporates only pure electrolytic copper coil windings, is recognized as the new standard of power for the electrical transformer industry. This Marcus technology recovers the original cost of the transformer within a period of 5 years. Most importantly, energy consumption over a 24 hour period is comparable to utility grade pole mounted transformers.
They are proud of the reputation they have earned for manufacturing quality products that deliver exceptional performance and savings. No other transformer outperforms a Marcus transformer. They Guarantee it.
Marcus Advanced WATT+ PLUS TM Technology
Maximum efficiency, lowest losses, trouble-free performance, longer life Long before the term ‘Green Energy’ came into vogue, they were making lighting and distribution transformers that significantly reduced power consumption for commercial and industrial users. Marcus advanced WATT+ PLUS manufacturing technology ensures maximum efficiency, lowest losses, trouble-free performance, and longer transformer life.
Features
Marcus Transformer’s Unique Wound Core Construction for Minimum Power Loss
The unique oval shape of Marcus wound core construction, unlike other conventional transformers core construction, ensures that the flow of magnetic flux is carried in the direction of cold-rolled grain-oriented steel for minimal core loss.
Copper Windings for Maximum Efficiency
Marcus coils are wound with 100% pure electrolytic high conductivity copper for long, trouble-free transformer life and a less expensive life cycle.
Although more expensive, copper is the best electrical conductor. Copper wound transformers don’t heat up so quickly, are more corrosion resistant and are easier to install than their aluminum equivalents, rendering them highly efficient with lower operating costs.
More Power at Less Cost
Marcus combined unique core design, copper windings, and new insulation material to ensure maximum electrical energy efficiency and reduced electricity bills, leading to a faster payback period. Marcus transformers will guarantee over 40 percent annual energy savings compared to competitive makes.
Easily Accessible Terminal Board
Voltages are clearly labeled to facilitate trouble-free connecting of line and load cables. All coil leads are directly brazed to terminal board studs to prevent heating and loosening.
Designed for Cooler Running
Marcus distribution transformers are manufactured with heatproof Class 220° C materials only and designed to operate well below the maximum allowable temperature of rise of 150° C.
More Effective Heat Transfer
To provide effective heat transfer, all our core and coil assemblies are double dipped in solvent-less, non-hygroscopic resin and baked thoroughly.
Quieter Operation
Anti-vibration isolators between the element and enclosure reduce vibration transfer to the surrounding structure, ensuring quieter operation.
Further Exceptional Quality Features
- Distribution transformers taps are all fastened to the primary terminal board and clearly labeled to enable fast and easy voltage adjustments (same point as last box “Easily Accessible Terminal Board”?)
- Wall and/or floor channels are included as standard accessories
- Dry-type transformers have integral anti-vibration cushions to reduce structural vibration transfer
- Industrial control transformers are bobbin-wound to facilitate heat transfer
- Control terminals are robustly anchored to eliminate flexing or breakage
- Control designs ensure nominal voltage accuracy under operating loads
More Information
Read more about Marcus Watt+PlusTM Technology
Related Story
Marcus Transformer’s Product Services
Marcus specializes in customizing our products to specific needs of your industry and organization. Below are some examples of the wide array of fields which their products service.
