KEMET C27.4 Motor Run Capacitor, 4µF, 470V AC, M8 Stud Mount

The KEMET C27.4 series is a range of robust, plastic-can packaged film capacitors specifically engineered for AC motor applications. These essential components are connected in series with the start winding of single-phase electric motors, facilitating smooth motor starting and increasing operational torque. Ideal for powering a variety of equipment, they are a reliable choice for engineers and maintenance professionals.

Constructed using a metallised polypropylene (PP) dielectric, these capacitors offer excellent electrical characteristics, including stable capacitance and low losses. They are housed in a durable can package designed for secure stud mounting with an M8 thread, ensuring a stable mechanical connection in demanding environments. The quick-connect, snap-in terminals simplify installation and wiring.

Performance and Reliability

Rated for 470V AC operation with a standard ±5% capacitance tolerance, this 4µF model delivers consistent performance. It boasts an impressive operational lifespan, with Class A rating offering 30,000 hours at 420V AC and Class B providing 10,000 hours at the full 470V AC rating. The component operates reliably across a wide temperature range from -25°C to +85°C, making it suitable for both industrial settings and consumer devices. It features a dv/dt rating of 20V/µs and meets key safety standards, including Safety Class P0 and the UL94-V0 flammability classification for the disk.

Applications

This motor run capacitor is versatile and finds use in numerous applications where reliable single-phase motor operation is critical. Its primary function is to ensure efficient starting and running of motors in systems such as air fans, pumps, circulators, and low-power electric motors. It is also applicable in broader fields including industrial machinery, consumer electronics, portable devices, and power management systems, particularly within motor drive control units.<