MARATHON ELECTRIC BLUE MAX SE

• Manufacturer: Marathon Electric
• Series: Blue Max
• Model: BVE 326THFPA8038AA R14 R150
• Frame: 326TC
• Enclosure: TEBC (Totally Enclosed Blower Cooled)
• Poles: 4
• Code: J
• Design: A
• Type: TFS
• Insulation Class: H1
• Service Factor: 1.0
• Duty Cycle: Continuous
• Max Ambient Temperature: 40°C
• Temperature Sensors: T-Stats (50/25)
• Serial Number: MM62456-01

Electrical Ratings:

• Voltage: 190/380 VAC
• Frequency: 50/60 Hz

Horsepower (HP):

• 2 HP @ 50 Hz (190/380V)
• 40 HP @ 50 Hz (380V, 60A)
• 40 HP @ 60 Hz (380V, 60A)

Speed (RPM):

• 1465 RPM @ 50 Hz
• 2225 RPM @ 75 Hz
• 3600 RPM base speed

Torque:

• 144 lb-in @ 50 Hz
• 96 lb-in @ 75 Hz

Current (Amps – High Connection):

• 59 A @ 190V, 50 Hz
• 60 A @ 380V, 50 Hz
• 60 A @ 380V, 75 Hz

Additional Data:

• Rotor Inertia: 5.5 lb-ft²

Stator Resistance (Ohms/Phase):

• 0.087 Ω @ 20°C
• 0.092 Ω @ 25°C
• 0.36 Ω @ 50°C
• 0.33 Ω @ 75°C
• 
  

Excitation Current (Xm): 8.06

• Type: 3 Phase Inverter Duty AC Induction Motor
• Origin: Made in USA (Wausau, WI)

Description

The Marathon Electric Blue Max Series motor is a heavy-duty, inverter-duty AC induction motor engineered for demanding industrial applications. With a robust 326TC frame, high thermal protection, and Totally Enclosed Blower Cooled (TEBC) design, this motor delivers reliable continuous-duty operation in challenging environments.

What It Does

This motor converts three-phase electrical power into mechanical rotational energy, providing consistent torque and performance across a wide range of speeds. Its inverter-duty rating makes it well-suited for variable frequency drive (VFD) applications.

Capabilities

• Supports 190/380 VAC input with 50/60 Hz operation
• Delivers up to 40 HP output power
• Operates reliably with VFDs for speed control and energy efficiency
• Provides continuous-duty performance in demanding environments

Core Functions

• Converts electrical energy into mechanical power for industrial equipment
• Maintains stable torque output across variable speeds
• Provides long-lasting, heavy-duty service in production environments

Design Features & Benefits

• Inverter Duty Rated: Optimized for use with VFDs, ensuring smooth performance and speed control
• TEBC Enclosure: Enhanced cooling and protection for extended motor life
• Class H Insulation: High thermal endurance for demanding applications
• Built-in Thermal Protection: T-Stats safeguard against overheating
• Rugged Construction: Ensures durability under heavy industrial loads

Applications & Industries

• This motor is suitable for a wide variety of industrial uses, particularly where variable speed and reliable continuous-duty operation are required. Typical applications include:
• Plastics and extrusion machinery
• Material handling equipment
• Pumps, compressors, and blowers
• Conveyors and processing lines
• Heavy manufacturing environments

Machine Overview & Summary

The Marathon Electric Blue Max BVE 326THFPA8038AA is a powerful 40 HP, inverter-duty AC induction motor designed for industrial reliability and performance. With TEBC construction, Class H insulation, and built-in thermal protection, this motor is engineered for continuous operation under demanding conditions. Made in the USA, it provides exceptional performance, durability, and compatibility with modern VFD-driven systems.

Motor 1:

• Model/Part Number: 215THTL7736-000015
• Brand: Marathon Motors
• Horsepower: 10 HP
• RPM: 1774
• Voltage: 575V
• Frequency: 60 Hz
• Phase: 3 Phase
• Frame Size: 215TC
• Enclosure: TENV (Totally Enclosed, Non-Ventilated)
• Mounting: Rigid
• Amperage: 10.8 Amps
• Service Factor: 1.0
• Bearings: 6309 / 6206
• Assembly: F1
• Rotation: Reversible (REV)
• Protection: TSTAT (Thermostat Protection)
• Weight: 222 lbs
• Manufacture Date: 04/2018
• Country of Origin: USA

Motor 2: 

• Manufacturer: Marathon Electric
• Model: 215THTL7726
• Horsepower: 10 HP
• Speed: 1774 RPM
• Voltage: 230/460V
• Phase: 3
• Frequency: 60 Hz
• Frame: 215TC
• Service Factor: 1.0
• Enclosure: TENV (Totally Enclosed Non-Ventilated)
• Bearings: Ball–Ball
• Mounting: C-Face, Rigid
• Assembly: F1
• Rotation: Reversible
• Amps: 27/13.5
• Protection: Thermostats (Normally Closed)
• Country of Manufacture: USA (Wausau, Wisconsin)
• Date of Manufacture: 02/02/2018

• Catalog / Model: ZDM 2333T (sometimes listed as “Vector” or inverter-vector duty)
• Spec / Design: D9E730W980Z1 
• Frame: 253TC (your plate) — many catalog listings show 256TC or 254TC variants
• Serial: 4060
• Horsepower: 15 HP
• Voltage: 230 V / 460 V (dual-voltage, three phase)
• Magnetizing Current: 14 / 7 A (i.e. no-load / magnetizing amps)
• Load Current (Full Load): (catalog values suggest ~ 36–37 A @ 230 V, ~ 18–19 A @ 460 V) RSP 
• Locked-rotor or design currents: 
• Speed: 1765 RPM (synchronous ~1800, under load ~1765)
• Poles: 4 pole design (typical for this RPM)
• Maximum Speed Capability: ~4000 RPM (catalogs list 4000 RPM as a top limit) 
• Enclosure Type: TEBC (Totally Enclosed Blower Cooled) or sometimes TENV (Totally Enclosed Non-Vented) depending on specific variant listing 
• Insulation Class: Class H (often listed in “vector duty” variants) 
• Efficiency: ~ 92.4 % (at full load) 
• Design Code: “A” design (typical for such motors) 
• Duty Rating: Continuous (run duty) 
• Mounting: Rigid base or foot-mount, rigid base indicated in catalogs 
• Shaft diameter / extension: ~ 1.625 inch (1 ⅝") typical for motor of this frame size 
• Service Factor: ~1.00 (some variants) 
• Overall dimensions & weight: (catalogs give lengths in the 24–30 in range; weight ~250–300 lb) 
• Blower: your plate says “Blower 460” — the blower is likely an integral fan or forced‐air cooling option
• Other: rated frequency 60 Hz; some catalogs show compliance with NEMA MG-1, Part 31 requirements for inverter duty motors 

Description

This is a 15 HP, 4-pole, three-phase vector/inverter duty AC motor designed for variable speed applications while maintaining torque across a wide speed range. The model designation (ZDM 2333T) suggests it belongs to a “Vector / Drive Motor” family (e.g. Baldor / ABB “Vector” line) built for demanding industrial control environments.

It supports dual voltage (230/460 V), has a robust enclosure (TEBC or TENV variant), and is optimized for use with inverters or VFDs (variable frequency drives). The cooling arrangement includes a blower (as per your plate) to maintain temperature under load, especially in forced-air applications.

What It Does

Converts electrical power (three-phase AC) into mechanical rotational motion, outputting ~15 HP

At rated speed (approx. 1765 RPM), it drives loads such as pumps, compressors, fans, or machinery requiring moderate torque

Offers vector / inverter duty capability—i.e. able to run from a variable-frequency drive while maintaining good torque control over a broad speed range

With blower cooling, it can dissipate heat and sustain continuous operation under heavier duty cycles

Capabilities

• Delivers sustained continuous power at full load with high efficiency (~ 92 %)
• Handles dual voltage operation (230 / 460 V) for flexibility in supply systems
• Operates down to low speeds (and up to a maximum safe speed ~4000 RPM) while retaining usable torque
• Built to inverter duty standards (insulation, mechanical design, spike resistance) so it’s more robust for drive applications 
• Suitable for both direct-on-line (DOL) and VFD control
• Designed to thermally manage load via blower cooling and thermal class H insulation

Core Functions

• Motor torque generation from electromagnetic interaction of stator and rotor
• Speed control via adjusting voltage/frequency when paired with VFD
• Heat dissipation via blower or enclosure to maintain safe operating temperature
• Support of feedback / control in closed-loop systems (some vector motor variants incorporate shafts or face for encoder feedback) 
• Protection against voltage spikes, electrical transients, and insulation stress (vector / inverter duty design)

Design Features & Benefits

• Dual voltage windings: Allows use with 230 V or 460 V systems without rewiring
• Blower cooling (TEBC): Enhances heat removal, enabling higher power density or sustained operation under load
• High efficiency (~92 %): Reduces power losses, operating cost, and heat generation
• Vector / inverter duty specification: Insulation, winding, and design are rugged for VFD / variable speed use
• Rigid base / foot mount: Provides stable mounting and alignment in industrial systems
• Compact frame with solid shaft: Suitable for coupling to gearboxes, belts, or direct drive
• High max RPM rating (~4000 RPM): Offers headroom for some high-speed applications
• Continuous duty rating: Can run in steady state conditions without overload in proper operating ranges

Applications & Industries

• This motor is suited for industrial environments requiring variable speed control and robust performance. Typical use cases include:
• Material handling (conveyors, lifts, indexing drives)
• Packaging machinery
• Printing presses and web handling
• Test stands, dynamometers, load simulators
• Pumps and fans with variable flow demands
• Custom machine tools or process equipment with speed control
• HVAC systems in heavy or large installations
• Anywhere you need a dependable 15 HP motor that can handle VFD / vector control

Machine Overview & Summary

In summary, this motor is a 15 HP dual‐voltage, 4-pole, three-phase vector/inverter duty motor built for demanding industrial use. It supports both DOL and VFD operation, with blower cooling to maintain thermal stability under load. Its high efficiency, ability to run over a wide speed range, and suitability for vector control make it a strong choice in applications requiring precise speed, torque control, and reliability.