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The TRADEPRO tp-2w2 is a hard start kit combining a Mechanical Potential Relay (MPR) and a start capacitor into a single assembly for single-phase compressor applications. Rated at 270-324 microfarads (MFD), it delivers the added starting torque needed to get compressors turning under high-load or low-voltage conditions. This kit is designed for units in the 3.5 to 5 horsepower range and is installed by licensed HVAC technicians during compressor service, equipment commissioning, or as a retrofit to address hard-start or failed-start conditions in the field.
This hard start kit is suited for residential and light commercial air conditioning and heat pump systems in the 3.5 to 5 HP compressor range. It is compatible with PSC (Permanent Split Capacitor) and CSIR (Capacitor Start Induction Run) type compressors. The 2-wire installation design simplifies retrofit work, allowing technicians to add hard-start capability to existing systems without extensive rewiring. It is appropriate for split systems, package units, and other single-phase compressor-driven equipment where starting reliability is a service concern.
Designed for use on single-phase PSC and CSIR type compressors rated 3.5 to 5 HP. Suitable as an OEM-approved hard start retrofit for compatible residential and light commercial HVAC compressor applications.
Installation should be performed by a licensed HVAC technician. Disconnect and lock out all electrical power to the unit before beginning any wiring work. The 2-wire connection attaches to the compressor start terminal and the run capacitor; verify terminal identification before connecting. Capacitors store electrical charge and must be safely discharged before handling any existing capacitor components.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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