Marathon Motors

Marathon Electric is a Wisconsin-based electric motor manufacturer with a history since 1913 (110-plus years). Now part of Regal Rexnord, Marathon serves HVAC, plumbing, industrial, and commercial applications with a catalog of 2,850+ general-purpose motor frames plus specialized lines.

Product Lines

• HVAC Motors: Blower, condenser fan, and evaporator fan applications for residential and commercial HVAC
• Pump Motors: Water pump, sump pump, and circulation pump duty
• General-Purpose Motors: ODP and TEFC; standard NEMA T-frame; fractional, commercial, and integral HP
• TerraMAX Series: IE3 and NEMA Premium efficiency; for applications subject to efficiency regulations
• Explosion-proof (hazardous locations), severe duty (outdoor/corrosive), washdown (food processing), marine duty
• PMDC, PMAC, BLDC, medium voltage, agricultural, and definite purpose specialty motors
• Sealed bearings, moisture-resistant varnish, corrosion-resistant coatings standard on applicable lines

Why Contractors and Engineers Specify Marathon

• 110-plus year history; 2,850+ general-purpose frames plus specialty lines for reliable sourcing
• TerraMAX: IE3 and NEMA Premium efficiency for commercial/industrial energy efficiency compliance
• Sealed bearings and moisture-resistant construction extend service life in damp, dirty HVAC environments
• Regal Rexnord brand: global manufacturing resources and HVAC/electrical/industrial supply distribution

How to Choose Marathon Motors

HVAC blower/fan replacement: read motor nameplate for HP, NEMA frame, voltage, phase, RPM, enclosure; select Marathon in matching specs. Pump motor: match to service conditions, HP, voltage, service factor, and enclosure. Efficiency regulation compliance: specify TerraMAX NEMA Premium or IE3. Harsh environments: severe duty, washdown, or explosion-proof per application.

Frequently Asked Questions

• Since when? Manufacturing electric motors since 1913; 110-plus years.
• Who owns Marathon? Part of Regal Rexnord Corporation.
• TerraMAX? Marathon's premium efficiency series; meets IE3 and NEMA Premium standards for energy efficiency regulation compliance.
• ODP vs. TEFC? ODP: ventilated, for indoor protected use. TEFC: sealed with external fan, for dirty/damp/outdoor applications. TEFC preferred for most HVAC and pump motor applications.
• HVAC-specific motors? Yes. Dedicated HVAC motor line for blower, condenser fan, and evaporator fan applications.