Packard PTMJ145 Start Capacitor

As an HVAC technician, you know that a soft start isn’t just about comfort—it’s about protecting the motor windings. The Packard PTMJ145 is a high-performance 145-175 MFD start capacitor engineered for intermittent duty in AC motor starting circuits. Rated for 220-250V applications, this unit provides the precise phase-shift needed to overcome initial inertia in compressors and fan motors. Encased in a moisture and oil-resistant molded phenolic resin or plastic housing, it is built to survive the harsh environments of a rooftop unit or a cramped mechanical room. It features standard dual blade terminals for quick, secure wiring, ensuring you spend less time on the service call and more time on the next job. This round motor start capacitor replaces multiple industry part numbers, including Mars 11949 and Supco CS145-175X220, making it a versatile addition to your truck stock for HVAC motor repair and general industrial capacitor replacement.

• Broad Compatibility: Drop-in replacement for Mars 11049, 11949, Supco CS145-175X220, and Global 1049.
• Rugged Construction: Non-polarized, dry electrolytic design housed in a phenolic case to resist environmental degradation.
• Reliable Performance: Rated for up to 20 starts per hour with a 3-second start cycle, ideal for heavy-duty single phase motor starting.
• Standardized Fit: 1-13/16 inch diameter and 3-3/8 inch height ensure it fits into existing mounting brackets.
• Temperature Resilience: Wide operational range from -40°C to 65°C (-40°F to 149°F) to prevent capacitor failure in extreme conditions.

• Can I use this to replace a capacitor with a slightly lower MFD? Always match the MFD rating within the specified range (145-175 MFD). Using the wrong capacitance can cause torque issues or overheating in the start windings.
• Is this rated for continuous run? No, this is a start capacitor for intermittent duty only. For continuous operation, you must verify the motor's requirement for a run capacitor.
• Will this work on a 208V system? Yes, the 220-250V rating is suitable for 208-230V single-phase systems commonly found in commercial and residential HVAC equipment.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.