KSB ACM 280S-4/HE Electric Motor – 90 kW, 1485 RPM, IP55

The KSB ACM 280S-4/HE Electric Motor is a high-efficiency, robust industrial-grade motor engineered by KSB Armaturen GmbH in Germany. Designed with a Totally Enclosed Fan Cooled (TEFC) construction and IC411 self-ventilation, this 4-pole motor delivers 90 kW of continuous output at 1485 RPM, suitable for a wide range of industrial applications. With a dual-voltage configuration of 400V Δ / 690V Y and a power factor of 0.86, the motor is adaptable to various operational setups including Direct-On-Line (DOL) and Star-Delta starting methods. Its Class F insulation ensures thermal endurance, while the IP55 enclosure offers reliable protection against dust ingress and water jets. Fitted with 6319-C3 bearings on both drive and non-drive ends, and a shaft diameter of 65 mm, this IM B3 foot-mounted motor guarantees mechanical stability and long service life.

Specifications:

– Manufacturer: KSB Armaturen GmbH (Germany)
– Model / Type: ACM 280S-4/HE
– Serial Number: 11094206
– Motor Type: Three-Phase Asynchronous Motor
– Construction Type: TEFC (Totally Enclosed Fan Cooled)
– Voltage: 400V (Δ) / 690V (Y)
– Frequency: 50 Hz
– Power Output: 90 kW
– Current Draw:
 – 400V (Δ): ~160 A
 – 690V (Y): ~92 A
– Speed: 1485 RPM
– Power Factor (Cos φ): 0.86
– Starting Method: DOL / Star-Delta Compatible
– Efficiency Class: IE2 (per IEC 60034-1)
– Frame Size: 280S
– Mounting Type: IM B3 (Horizontal foot-mounted)
– Shaft Diameter: 65 mm
– Bearing Type:
 – Drive End (DE): 6319-C3
 – Non-Drive End (NDE): 6319-C3
– Cooling Method: IC411 (Self-Ventilated)
– Enclosure Protection: IP55
– Insulation Class: F

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