Marathon IEC Motor Three Phase 1/3 HP 3430 RPM Replacement MPN - MR303
The Marathon MR303 is a three-phase IEC motor suitable for various industrial applications. This motor operates at one-third horsepower with a speed of three thousand four hundred thirty RPM. The design incorporates a TEFC enclosure, ensuring durability and protection in demanding environments.
- Electrical Type: Three Phase
- Voltage: 230/460
- Mounting Type: B3 / Rigid
This motor is well-suited for tasks that require reliable performance under heavy loads. It provides effective energy consumption while meeting high safety standards.
Specifications
-
Power: 1/3 HP
-
Frame Size: 63
-
Enclosure Type: TEFC
-
Rotation: REV
-
Amperage: 1.1/0.55
-
Shaft Type: Single
-
Overload Protection: No
-
Material: Aluminum
-
Brand: Marathon
-
MPN: MR303
What Our Experts Think
-
Compact IEC frame motor designed for reliable three-phase industrial applications.
-
Provides 1/3 HP at 3430 RPM, delivering efficient, high-speed performance.
-
Built for durability and consistent operation in demanding environments.
-
Serves as a direct replacement for MPN MR303, ensuring compatibility.
-
Ideal for machinery, pumps, fans, and general-purpose equipment.
Q&A
-
What is the horsepower rating of this motor?
It delivers 1/3 HP.
-
What speed does it run at?
Operates at 3430 RPM for high-speed performance.
-
What type of power supply does it need?
Designed for three-phase operation.
-
Is this motor a replacement model?
Yes, it directly replaces MPN MR303.
-
What applications is it best for?
Suitable for industrial equipment, pumps, fans, and general-purpose use.
Maintenance Tips
-
Inspect and clean the motor housing regularly to avoid dust buildup.
-
Check connections and terminals to ensure proper electrical contact.
-
Lubricate bearings as recommended by the manufacturer.
-
Monitor for overheating or vibration during operation.
-
Schedule periodic servicing for long-term reliability.
