
Marathon Electric (K256) GE NEMA 56C Frame Bolt-on Motor, TEFC 1 HP; 3-Phase; 208-230-460V
Core Performance Data
Marathon K256 Full Specifications
| Model Number | Marathon Electric K256 |
| Full Load Amperage (FLA) | 3.6-3.8/1.9 Amps (208-230V / 460V) |
| Shaft Dimensions | 5/8 inch diameter × 1 7/8 inch length |
| Bearings & Insulation | Ball bearings, Class B insulation |
| Rotation | Reversible CW/CCW |
| Nominal Efficiency | 79.2% at rated load |
| Operating Environment | 40°C ambient, no thermal protection |
Industrial Water Treatment Motor
The Marathon K256 is designed for direct coupling to pumps, blowers, and filtration equipment in municipal water plants, industrial RO systems, and commercial filtration operations. The NEMA 56C C-face flange allows secure bolt-on mounting to compatible pump housings without flexible couplers or alignment shims. Tri-voltage wiring accommodates varied facility power configurations, while the TEFC enclosure protects internal components from moisture and contaminants common in water treatment environments. This motor pairs with booster pumps, backwash systems, and high-pressure filtration assemblies requiring three-phase power and continuous-duty reliability.
Core Performance Data
Marathon K256 Full Specifications
| Model Number | Marathon Electric K256 |
| Full Load Amperage (FLA) | 3.6-3.8/1.9 Amps (208-230V / 460V) |
| Shaft Dimensions | 5/8 inch diameter × 1 7/8 inch length |
| Bearings & Insulation | Ball bearings, Class B insulation |
| Rotation | Reversible CW/CCW |
| Nominal Efficiency | 79.2% at rated load |
| Operating Environment | 40°C ambient, no thermal protection |
Industrial Water Treatment Motor
The Marathon K256 is designed for direct coupling to pumps, blowers, and filtration equipment in municipal water plants, industrial RO systems, and commercial filtration operations. The NEMA 56C C-face flange allows secure bolt-on mounting to compatible pump housings without flexible couplers or alignment shims. Tri-voltage wiring accommodates varied facility power configurations, while the TEFC enclosure protects internal components from moisture and contaminants common in water treatment environments. This motor pairs with booster pumps, backwash systems, and high-pressure filtration assemblies requiring three-phase power and continuous-duty reliability.
Original: $574.52
-65%$574.52
$201.08Description
Core Performance Data
Marathon K256 Full Specifications
| Model Number | Marathon Electric K256 |
| Full Load Amperage (FLA) | 3.6-3.8/1.9 Amps (208-230V / 460V) |
| Shaft Dimensions | 5/8 inch diameter × 1 7/8 inch length |
| Bearings & Insulation | Ball bearings, Class B insulation |
| Rotation | Reversible CW/CCW |
| Nominal Efficiency | 79.2% at rated load |
| Operating Environment | 40°C ambient, no thermal protection |
Industrial Water Treatment Motor
The Marathon K256 is designed for direct coupling to pumps, blowers, and filtration equipment in municipal water plants, industrial RO systems, and commercial filtration operations. The NEMA 56C C-face flange allows secure bolt-on mounting to compatible pump housings without flexible couplers or alignment shims. Tri-voltage wiring accommodates varied facility power configurations, while the TEFC enclosure protects internal components from moisture and contaminants common in water treatment environments. This motor pairs with booster pumps, backwash systems, and high-pressure filtration assemblies requiring three-phase power and continuous-duty reliability.








