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The Bard 8201-105-37 Comp. Current Monitor Assembly is an OEM electrical protection and monitoring component used on Bard wall-mount HVAC equipment to sense compressor amperage during operation, helping the control system recognize abnormal load conditions that can point to issues like locked rotor events, failing components, or wiring problems. Replacing a faulty current monitor can restore proper compressor safeties and more consistent troubleshooting signals, which is especially important on units that cycle frequently in demanding commercial and school applications. For best fit and correct operation, confirm this part number against your Bard model and serial number before ordering, since current monitor assemblies can vary by control package and vintage.