ACS 5 SPL HP Compressor Duty Motor, 3.5 HP Output, 56 Frame, 3450 RPM, 208-230V
ACS single-phase compressor duty motor, model 56S34D3.5MA, running 3450 RPM on 208-230V in a 56H frame. The nameplate prints both numbers side by side: 5 SPL HP as the special rating, and 3.5 HP as the actual output. We list both so you can size the replacement honestly.
Key specifications
- Rating: 5 SPL HP, 3.5 HP output (both figures are printed on the nameplate)
- Speed: 3450 RPM, 2 pole
- Phase and frequency: single phase, 60 Hz
- Frame: 56H, rigid foot base
- Voltage: 208-230V
- Full load amps: 16.2 A
- Service factor: 1.0
- Enclosure: ODP, open drip-proof
- Insulation class: F
- NEMA code letter: F
- Duty: continuous, 40 C ambient
- Shaft: 5/8 in. diameter, keyed
- Bearings: 6203RZ ball
- Protection: thermally protected
- Rotation: CCW facing the drive end, non-reversible
- Weight: 40 lb
- Model number: 56S34D3.5MA. Certification: CSA file 260550
Reading the SPL rating
SPL means special, an OEM horsepower rating rather than a NEMA-certified one. This motor is unusually straightforward about it: the manufacturer prints the 3.5 HP output alongside the 5 SPL marketing figure. Size your replacement on the output, the 16.2 full load amps and the frame, not on the SPL number. Note also the 1.0 service factor, which means no overload headroom. If you need a genuine NEMA 5 HP single-phase motor, see our 5 HP 56 frame model with a 7/8 in. shaft and 22 amp draw.
Typical applications
Replacement motor for belt-driven single-stage air compressors built around a 56 frame motor with a 5/8 in. keyed shaft at 3450 RPM on 208-230V single-phase power. The motor is non-reversible, so confirm your pump rotates counterclockwise facing the drive end before ordering.
Supplied by AirComParts as part number J5037. Shaft extension length and keyway dimensions are not published by the manufacturer, so check them against your existing motor if the sheave fit is tight.
NOTE: Actual product may be different from pictured!
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