Baldor Electric
Baldor Electric L3403M Capacitor-Start Motor 1/4 hp 1725 RPM 115/230V 48 Frame
Single-phase capacitor-start motor delivering 1/4 hp at 1,725 RPM on 115/230V AC with a 1.35 service factor in a 48-frame totally enclosed fan-cooled housing
- TypeElectrical
- 1/4 hp output for light-duty tasks
- 115/230 V dual-voltage wiring flexibility
- 35 service factor handles intermittent overloads
- Totally enclosed fan-cooled design resists dust and moisture
- Manual thermal protection prevents winding damage
Capacitor-Start Motor for General Purpose
This Baldor-Reliance L3403M is a single-phase capacitor-start motor rated at 1/4 hp with a nameplate speed of 1,725 RPM. It operates on 115/230V AC at 60 Hz and fits a NEMA 48 frame. The motor is designed for continuous duty in general-purpose industrial and commercial applications.
Voltage Limits and Thermal Constraints
The motor is usable at 208V but not at 200V, requiring supply voltage within the specified 115/230V range. Full-load current draws 5A at 115V or 2.5A at 230V. A 1.35 service factor provides overload margin, while Class B insulation and a 40°C maximum ambient temperature define the thermal envelope for continuous operation.
Replacing Split-Phase or Worn Units
This capacitor-start design replaces split-phase motors where higher starting torque is needed for loaded equipment such as conveyors or pumps. The upgrade is worthwhile when the application demands reliable starting under load and the NEMA 48 frame matches the existing mounting pattern. It does not suit variable-speed drives or applications requiring speeds other than the fixed 1,725 RPM.
Highlights
- 1/4 hp output for light-duty tasks
- 115/230 V dual-voltage wiring flexibility
- 35 service factor handles intermittent overloads
- Totally enclosed fan-cooled design resists dust and moisture
- Manual thermal protection prevents winding damage
Specifications
| Brand | BALDOR ELECTRIC |
|---|---|
| Type | Electrical |
Questions about this item
How do I choose between the 115 V and 230 V wiring for the 1/4 hp 1725 RPM motor?
The motor is dual-voltage; connect the leads for 115 V to draw 5 A or for 230 V to draw 2.5 A, matching your supply.
What does the 1725 RPM nameplate speed mean once the motor is loaded?
At full load the shaft turns at 1725 RPM; with the 1.35 service factor it can handle 35 % overload continuously without overheating.
Is the 48 frame NEMA motor compatible with 208 V supplies?
Yes, the motor is rated usable at 208 V; it is not usable at 200 V.
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