GE Motors by Wolong X$D Ultra - 300 HP, 3600 RPM, 3-Phase, TEFC, Premium Efficiency, 460V, 449TS Frame Short Shaft | Model 5KS449SAA123

The GE Motors by Wolong X$D Ultra® 300 HP premium efficiency motor is the flagship cast-iron industrial motor in the GE Motors line — engineered to outlast, outperform, and outwarranty the competition. Built with a 5-year factory warranty, ISO 1940 Grade 1 vibration balance, and a 316 stainless steel nameplate, this motor is the premium choice for critical industrial applications where downtime isn't an option.

This model runs at 3600 RPM — high-speed (2-pole) — centrifugal pumps, compressors, blowers.

About the TS frame: The 'TS' suffix indicates a short shaft designed for direct-coupled applications. If you're belt-driving a load, you typically want the 'T' frame (full-length shaft) instead.

Availability: Made-to-order from the factory. Typical lead time 4-8 weeks. Call us for expedited options and current production slots.

What makes the X$D Ultra a premium-tier motor

• 60-month (5-year) factory warranty — nearly double the industry-standard 36-month warranty. Warranty runs from install date (or 66 months from manufacture, whichever comes first)
• Class H insulation system (GEGARD2400™) — one class above the industry standard Class F; handles higher operating temperatures and heavier duty cycles
• Variable Torque INF:1 inverter capability — fully VFD-rated with infinite turndown ratio. Compatible with any modern sensorless vector or flux vector drive without derating
• NEMA MG1 Part 31 compliant insulation — spike-resistant, survives VFD operation without premature winding failure
• ISO 1940 Grade 1 vibration balance — tighter than NEMA standard; reduces bearing wear and extends motor life
• All-cast-iron construction — cast iron frame, cast iron end shields, cast iron conduit box. No aluminum, no stamped steel. Outlasts rolled-steel competitors in vibration-heavy applications
• 316 stainless steel nameplate — corrosion-resistant for chemical, marine, food processing, and outdoor installations where the nameplate has to remain legible for decades
• NEMA Routine + IEEE 112 Method B testing on every motor — actual performance verification, not just design calculations
• Continuous time rating — 24/7/365 duty capability
• RAL 1001 epoxy ester paint — industrial-grade corrosion protection, tropicalized for humid and chemical environments

Full specifications

Model Number	5KS449SAA123
Catalog Number	M8960
Horsepower	300 HP
Speed (Synchronous)	3600 RPM
Voltage	460V, 60 Hz
Phase	Three-phase
Full Load Amps	317.0 A
Nominal Efficiency	95.8% (NEMA Premium)
NEMA Frame	449TS
NEMA Design	B
Enclosure	TEFC (Totally Enclosed Fan Cooled), IP55
Mounting	F1 (foot-mount, field-modifiable to F2)
Service Factor	1.15
Insulation Class	Class H (GEGARD2400™)
Temperature Rise	80°C @ 1.0 SF
Ambient Rating	40°C
Inverter Duty	Variable Torque — Infinite turndown ratio, NEMA MG1 Part 31
Vibration Balance	ISO 1940 Grade 1
Frame Material	Cast Iron
Nameplate	316 Stainless Steel
Warranty	60 months from installation / 66 months from manufacture
Approximate Weight	2790 lbs

Typical applications

• Centrifugal and positive-displacement pumps — water treatment, process, chemical transfer, cooling tower
• HVAC fans, blowers, and air handlers in commercial and industrial buildings
• Conveyors — manufacturing, aggregate, food processing, bulk material handling
• Reciprocating and rotary compressors — shop air, process gas, refrigeration
• Mixers, agitators, and blenders — chemical, food, and wastewater processing
• Machine tools, presses, and OEM equipment requiring premium reliability
• Critical HVAC (chilled water pumps, cooling tower fans) where failure means facility downtime
• Process equipment in continuous-duty service where 5-year warranty pays for itself

Direct replacement for these premium-tier competitor motors

The X$D Ultra is a dimensional and functional equivalent to premium-tier industrial motors. Match the HP, RPM, frame, and voltage — NEMA dimensions drop in identically:

• Baldor-Reliance — Super-E Premium, RPM AC, RPM III, 841 Plus (GEGARD2400 ≈ Baldor's Super-E insulation system)
• WEG — W22 Premium IE3/IE4, W50, Master Line
• U.S. Motors (Nidec) — Titan, Unimount Premium, Corro-Duty Premium
• Marathon — Black Max, 841 Plus Premium, GlobeTrotter Premium
• Siemens — Simotics GP, SD, XP premium efficiency
• ABB / TECO-Westinghouse — MAX-E3, cast-iron premium lines
• Legacy GE motors — M-Series, CD-Series, direct spare-parts replacement in older installations still running original GE 841 or GE EM-Series

The legacy GE heritage — why that matters in Colorado industry

GE Industrial Motors has been supplying motors to Colorado's power plants, mining operations, water districts, and process industries for over 100 years. When Wolong acquired the business from ABB in 2018 (after ABB acquired the GE industrial business), they retained the engineering team, manufacturing processes, and brand reputation that made GE motors the industry standard. The X$D Ultra is the direct evolution of the GE industrial line you already have running in Colorado facilities — same engineering DNA, same ruggedness, improved manufacturing quality, and a longer warranty than ever.

Colorado altitude considerations

The X$D Ultra is rated for standard altitude (3,300 ft) at its nameplate values. At Colorado elevations:

• Denver Metro / Front Range (~5,280 ft): ~3-4% continuous capacity derating. For continuous-duty applications, size one HP step up
• Colorado Springs to Fort Collins (5,000-6,000 ft): Similar to Denver — one HP step up recommended for continuous duty
• Mountain installations (7,000+ ft): 8-10% derating. Size two HP steps up

The X$D Ultra's Class H insulation and 1.15 service factor give you more altitude margin than budget motors. Call (303) 939-8643 with your elevation and duty cycle — we'll confirm correct sizing.

Comparable 300 HP motors in our catalog

The X$D Ultra is our premium pick at this HP and speed — if you need a specific brand or have OEM specifications to match, here are comparable motors we also stock:

• Galt — Galt Electric GPT3000-2-449TS-K Motor - 300 HP, 3600 RPM, 3-Phase, TEFC, 44 (300 HP, 3600 RPM) — $13354.46

Not sure which motor is right for your application? Call (303) 939-8643 — we'll match the right motor, warranty level, and price point to your job.

What Colorado Electric Motors Depot offers on every X$D Ultra order

• Factory-direct dealer pricing — authorized GE Motors by Wolong distributor serving Colorado and the Rocky Mountain region
• Free sizing and cross-reference assistance — we'll match your existing Baldor, WEG, US Motors, Marathon, Siemens, or ABB model number to the correct X$D Ultra equivalent
• Nameplate photo-to-quote — text or email a photo of your failing motor's nameplate; we'll quote the X$D Ultra replacement within the hour
• Same-day shipping on stocked units from multiple nationwide distribution centers
• 60-month warranty support — Colorado-local warranty claim processing

Shipping: Motors in this HP range ship via ground for smaller frames or palletized LTL freight for larger frames. Most stocked units ship same day.