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NEMA Premium Vertical Pump Motors

Vertical Pump Motor Group Image

Introducing the Ultimate Pump Motor

A complete upgrade, Ultra Series vertical pump motors combine all the benefits of rugged and reliable XSD Ultra materials with advanced thrust and cooling technologies. All ratings of the Ultra family are fully inverter-duty exceeding NEMA MG1-31 requirements. Ultra Series vertical pump motors are completely NEMA premium efficient, meeting IEEE 841 levels with a full cast iron frame, inline, high thrust, space heaters, and a non-reverse ratchet. Durable construction meets the requirements in a wide range of vertical hollow and solid shaft motor applications.

Features & Benefits:

  • All lines fully inverter-duty

  • NEMA Premium Efficient - all lines

  • Low temperature rise, Class H insulation

  • Precision RCF data (+/- 5%)

  • Improved axial ball ratchet systems for better equipment protection

  • Effective WPI rodent protection

  • Rugged and reliable cast iron construction

  • Thrust capability 20% above industry standard for deep well applications

  • No water cooling required

  • Expanded 449 frame MV capability

  • SRC couplings available on stock motors

  • Insulated bearing and AEGIS SGR Standard

  • Extended bearing life able to meet 100,000-hour (~12 year) requirement

  • Standard WPI available in 575V rating


Industry Leading Coil Insulation System

GE pump motors are manufactured standard with a GEGARD2400 insulation system. This system exceeds NEMA MG1-31 (which is 3.1 times the nameplate voltage) for motors operating on inverters. This insulation system is comprised of class H materials. The combination of this and the varnish process provides a typical Corona Inception Voltage of 2400 volts peak with a rise time of 0.1 seconds.

Innovative Patented Air-Cooling Technology

Our engineers found a better way to air cool bearings in larger frame TEFC motors. The design improvements result in an amazing ~30 degrees C temperature reduction helping to dramatically extend bearing and winding life.


With a class H insulation, cast aluminum top hat, multi-direction cast in lifting lugs, oversized cast iron conduit box, aluminum anti-rodent screens and heavy-duty cast-iron frame, the WPI Ultra is the most robust vertical hollow shaft motor in the industry.

Operational Efficiency

GE high thrust vertical pump motors have, on average, 20% higher thrust and extended performance than any other similar product in the industry.  As a result, motors in all deep well applications can be air-cooled with any bearing configuration.

We are constantly making improvements in component and manufacturing standardization. The Ultra Series TEFC and WPI designs use many of same components and all make use of proven XSD Ultra electrical designs resulting in some of the fastest custom cycle times in the industry.


The hollow shaft high thrust design is intended for deep-well pump applications. Solid shaft motors are designed to operate in pump applications including in-line, booster, centrifugal, non-clog, and vertical turbines under extreme conditions for the petrochemical, pulp and paper, waste-water treatment and material processing industries.

Technical Scope

3-1000HP, 600-3600 RPM

460, 575, 2300/4160 V

60Hz or 50Hz

WPI and TEFC Enclosures

Frame Size: 182-5013

Hollow and Solid Shaft

Normal, High, and Extra High Thrusts

API 610 12th Edition

P-Base mountings

VFD ready with GEGARD Class H insulation

Three Year Warranty


Why you should choose
Ultra vertical motors

Irrigation Duty Brochure

UltraSnow-V Brochure

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