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Bard part number 8401-033 is an OEM 2 pole 20 amp contactor with lugs used to switch high voltage power to key loads such as the compressor when the 24V control circuit calls for cooling. If your Bard wall mount unit is experiencing intermittent starts, chattering, or burned contacts, replacing the contactor is a common and reliable fix to restore proper operation and protect the rest of the electrical system. This is a genuine Bard electrical control component built for correct fit and dependable engagement in compatible Bard packaged wall mounted air conditioners, and it is best practice to confirm the coil voltage and amperage match your unit model and wiring diagram before ordering.