4400.0009 is a part manufactured by the company Schurter. It is a 15A/250V AC, screw mounting line filter with an integrated electromagnetic interference suppression. This part has a current rating of 15A and a voltage rating of 250V AC, and features a non-resettable thermal fuse with an operating temperature range of -40°C up to +125°C. It has two connection terminals, a built-in fuse holder, and a large logo on the front and back surfaces. The filter has a dielectric strength of 4 kV ac, an inductance of 2.3 mH, a capacitance of 200 nF, an isolation resistance of greater than 10 TO, and a frequency range from 10 Hz to 100 kHz.