MAGNAMAX Generator/Alternator 574RSL4038-B Class

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The Marathon Generator is a top performer in every respect: offering powerful performance, reliable power generation, and easy installation for prime power and emergency standby applications from 5 kW to 4000 kW. The Marathon Generator brand provides an emphasis on custom, highly engineered solutions that provide real value to customers. Marathon Generator’s products are backed by an experienced customer service and technical support staff available to support customer requirements. Generators are manufactured and inventoried worldwide to meet the needs of our global customer base.

A proven top performer in every respect the MAGNAMAXDVR® generator is a result of Marathon Electric's fifty years of generator experience and an intensive product development program using cutting edge technology.

Inherent to the MAGNAMAXDVR® design is exceptional transient performance. Meeting the demand of today's challenging market by offering remarkable performance and supporting a variety of non-linear loads. A load such as a UPS system or variable speed drives. The MAGNAMAXDVR® provides unprecedented voltage regulation in the presence of the harmonic voltage distortion caused by this type of load while the low reactance of the design minimizes the distortion.

Constructed for extended life by utilizing Marathon's exclusive unirotor construction, UL recognized class H insulation system, and long life bearings.

The MAGNAMAXDVR® design can by incorporated in equipment certified to UL 2200 and is the ideal generator for voltage critical applications such as:

Telecommunication Networks


Computer Centers

Commercial Buildings


  • 4 pole units available are 50 / 60 Hz

  • Engine adapters available from SAE 3 to SAE 00

  • IP-22 and IP-23 protection available from stock

  • Large Conduit Box provides ample space for easy connections

  • Generators are designed for easy paralleling with utilities or with other generators

574RSL4038-B Class Specifications:

  • Frequency (Hz)

  • Power (kW)

  • Working Temperature (C)

  • Power Factor

  • Power (kVA)

  • rpm

  • Weight (lbs)

  • List Price ($)

  • Insulation Class

  • Leads Number

  • Voltage (Y)
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