Baldor Electric
Baldor Electric EM3556 1 HP 56 Frame Three-Phase Motor
Three-phase, totally enclosed fan-cooled motor delivers 1 HP at 1,155 RPM in a 56 frame with 208-230/460 V AC input and 82.5% nominal efficiency
- 1 HP three-phase power for industrial equipment
- 5 % nominal efficiency reduces energy consumption
- Totally enclosed fan-cooled design protects internal components
- Dual-voltage 208-230/460 V AC fits multiple supplies
- 56 frame steel construction with rigid base mounting
Application & user
The Baldor EM3556 is a new three-phase general-purpose motor rated at 1 HP in a 56 frame. It suits OEMs, maintenance teams and machine builders who need a continuous-duty drive for conveyors, pumps or fans in industrial environments. Buyers who require a single-phase supply or a different frame size cannot use this unit.
Deciding specification
The nameplate speed is 1155 RPM at 60 Hz with a full-load current of 3.6 A at 208-230 V or 1.8 A at 460 V. Voltage compatibility and speed must match the driven equipment exactly, otherwise the motor will not deliver rated torque or may overheat.
Installation & common issues
A rigid steel base provides standard 56-frame mounting, and the shaft rotates in either direction for flexible coupling. The motor has no internal thermal protection, so external overload devices are mandatory. Insulation class F and a 1.15 service factor allow operation up to 40 °C ambient, but missing overload protection is the most frequent cause of premature failure.
Highlights
- 1 HP three-phase power for industrial equipment
- 5 % nominal efficiency reduces energy consumption
- Totally enclosed fan-cooled design protects internal components
- Dual-voltage 208-230/460 V AC fits multiple supplies
- 56 frame steel construction with rigid base mounting
Specifications
| Brand | BALDOR ELECTRIC |
|---|
Questions about this item
What does the 1,155 RPM nameplate speed mean once the motor is loaded in a real machine?
At full load the shaft turns at 1,155 RPM on a 60 Hz supply, delivering the rated 1 HP output.
The motor is rated for 208-230/460 V three-phase — what does that cap in practice?
It can be wired for either low-voltage 208-230 V or high-voltage 460 V three-phase 60 Hz supplies, drawing 3.6 A or 1.8 A respectively at full load.
What does the 56 frame designation require for mounting and shaft fit?
It uses a NEMA 56 rigid base with standard shaft dimensions and a steel frame, so it bolts directly to matching 56-frame mounting patterns.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
