Marathon® Electric Motors – Blue Chip® Motors

(SB526 Variable Speed Motors)

If you need industrial AC motors for severe duty, consider one these two:  Marathon® Blue Chip® Severe Duty Explosion Proof and Blue Chip XRI® Severe Duty motors.   Both motors available from Carotron, Inc. and provide a reliable solution for severe duty motor needs.

The Blue Chip® Severe Duty Explosion Proof motor has an all cast iron construction with a 1.15 service factor, and can be used on compressors, blowers, fans and pumps, conveyors and machine tools.  It has corrosion resistant hardware as well as epoxy paint, which makes the motor usable in environments where contaminants are present that can cause motor failure.  It also features a stainless steel nameplate and an over-sized NEC-compliant conduit box that rotates, making more room for field wiring and termination.     

Blue Chip XRI® Severe Duty motors are designed to NEMA Premium efficiency levels and are totally enclosed, with rigid base inverter duty.  These serve well in applications such as automotive, marine duty, foundries, mines, food processing, refineries, chemical plants and paper plants.  Enjoy increased ROI for applications that require a long run or high cycle operation.

Check out these two Marathon® Blue Chip® motor models and features below. Call Carotron at 1-888-286-8614 with AC motor orders or questions.

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Blue Chip® Severe Duty Explosion Proof 2:1 CT to 10:1 CT

Blue Chip XRI® Severe Duty
& IEEE841
Up to 20:1 CT

Marathon Blue Chip Severe Duty Explosion Proof


♦ Cast iron construction, 1 HP through 350 HP, UL Listed.
♦ Class I Groups C & D, Class II Groups F & G, Temperature code T3B.
♦ Motor nameplate has Variable & Constant torque capability for use with any PWM Drive.
♦ 1.15 Service factor on sinewave, 1.0 Service factor on VFD power.
♦ CR200 corona resistant magnet wire.
♦ Meets IEEE45 USCG Marine Duty specifications.
♦ IP54 Construction.

Marathon Blue Chip XRI Severe Duty


♦ 100% cast iron construction, 3/4 HP through 450 HP.
♦ Capable of Variable torque and Constant torque.
♦ 1.15 Service factor on sinewave, 1.0 Service factor on VFD power.
♦ NEMA Design B provides limited in-rush current when by-passing the VFD.
♦ Internal and external epoxy coatings.
♦ MAX GUARD® Class F insulation system.
♦ Meets IEEE45 USCG Marine Duty Specifications.
♦ IP54 Construction on XRI Severe Duty and IP56 Construction on IEEE841.

Call Carotron today to discuss your Marathon® Blue Chip® AC Motor Needs:

Local: 1 (803) 286-8614 or Toll-Free at 1 (888) 286-8614

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