Marathon® 143/145 Frame Electric Motors Brochure


This brochure showcases Marathon’s 143/145 frame motors engineered for industrial strength, high efficiency, and versatile modification options. Ideal for general-purpose, inverter duty, and severe-duty applications, these motors meet or exceed NEMA Premium® standards and are backed by a 3-year warranty.

Key Points

  • Includes IP22, IP43, IP55, and IP56 enclosures for various applications.
  • Designed for inverter duty with 10:1 variable torque and 2:1 constant torque capability.
  • Offers IEEE 841 and severe duty motors with Class F insulation and MAX GUARD® system.
  • Supports extensive field modifications via MOD CENTRAL including grounding, mounting, thermal protection, and more.
  • Available in 0.75HP to 3HP with speeds ranging from 1200 to 3600 RPM.
  • Compatible with numerous configurations including C-Face, JM/JP pump mounts, and footless designs.
  • Broad range of accessories and kits: brakes, encoders, terminal blocks, drip covers, etc.
  • Certified with UL, CSA (Canada), and CE® marks for global standards compliance.