Dodge(Baldor) L3403M Motor

For demanding commercial and industrial applications requiring a dependable 1/4 HP single phase motor, the Baldor-Reliance L3403M is a premier choice for professionals. This NEMA 48 frame motor features a totally enclosed fan cooled (TEFC) design, making it highly suitable for environments where dust, moisture, and debris are present. Operating at a nominal 1725 RPM, this 4-pole motor provides the consistent torque needed for high-cycle equipment such as pumps, fans, compressors, and conveyors. Designed for versatility, the L3403M supports dual-voltage 115/230V configurations at 60Hz, allowing for seamless integration into existing electrical systems without major rewiring.

Built with a heavy-gauge steel frame and a rigid base mount, the L3403M is engineered to minimize vibration and maintain precise alignment during operation. The motor utilizes high-quality ball bearings and Class B insulation rated for a 40°C ambient temperature, ensuring thermal stability under continuous duty cycles. As a capacitor start induction run motor, it delivers high starting torque, making it effective for loads that are difficult to get moving. Technicians value the L3403M for its reversible rotation capability and the standard 0.5-inch shaft diameter, which simplifies pulley and coupling selection for specific mechanical requirements.

• Enhanced Durability: The TEFC enclosure protects internal copper windings and ball bearings from external contaminants, extending the service life in harsh mechanical rooms.
• Operational Versatility: Dual-voltage 115/230V capability and reversible rotation allow this motor to serve as a high-performance replacement for various 1/4 HP AC motor models.
• Efficient Performance: A 1.35 service factor provides a significant safety margin for handling temporary overloads or voltage fluctuations in commercial circuits.
• Reliable Starting: Features a high-reliability snap-action starting switch and high starting torque for consistent performance in high-inertia applications.

Common Questions & Considerations

What is the primary difference between this and an ODP motor?
The TEFC (Totally Enclosed Fan Cooled) design of the L3403M prevents ambient air from circulating through the motor's interior, unlike Open Drip Proof (ODP) models. This makes it the standard for environments with high particulate matter or moisture.

Can this motor be used with a Variable Frequency Drive (VFD)?
This is a single phase capacitor-start motor and is not designed for speed control via standard VFDs. For applications requiring variable speeds, a three-phase motor and drive combination is generally required.

Does the L3403M include thermal protection?
The L3403M typically features a manual thermal overload protector. This requires a physical reset if the motor trips due to excessive heat, preventing automatic restarts that could pose a safety risk during maintenance.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.