4055457321 Genuine Compressor Capacitor 45uF 450V 4 Pin for Electrolux Group Air Conditioners, Part 17400103000053

Part 4055457321 is a genuine Electrolux compressor capacitor rated 45uF at 450V, with four pin terminals. It is also identified by the number 17400103000053. This capacitor suits Electrolux group air conditioners that use this rating on the compressor circuit. Models aren't on file, so check that the uF and voltage rating printed on your old capacitor match, and ask us through the parts enquiry form if you need help.

Air conditioner compressor not starting? Test the capacitor

The capacitor gives the compressor motor the boost it needs to start and helps it run efficiently. When it weakens or fails, the outdoor unit may hum without the compressor starting, the fan may run while the system blows room temperature air, or the compressor may trip on overload after a few seconds. A bulging top, leaking oil or a capacitance reading well below 45uF on a capacitor tester all point to a failed capacitor. Heat inside the outdoor unit is the usual cause of wear.

Part details

• Genuine Electrolux part 4055457321
• Also numbered 17400103000053
• Rated 45uF, 450V
• 4 pin terminals
• Compressor capacitor for air conditioners

Safe capacitor replacement

Capacitors can hold a dangerous charge even with the power off. Isolate the outdoor unit, then have a licensed electrician or air conditioning technician discharge and test the old capacitor before anyone touches the terminals. Photograph the wiring first, connect each wire to the matching terminal on the new part, and secure the capacitor in its bracket before restoring power.

Questions about this part

Can I use a capacitor with a different rating?

The capacitance should match the 45uF your compressor was designed for. A higher voltage rating is sometimes acceptable, but never a lower one. Matching the original number avoids mistakes with the rating and the terminal layout.