Packard PRMJ189 Start Capacitor

The Packard PRMJ189 is a professional-grade 189-227 MFD 330V Round Start Capacitor designed for intermittent duty in high-torque AC motor starting applications. Engineered for the service technician, this dry, electrolytic unit is housed in a moisture and oil-resistant phenolic resin case, ensuring survival in harsh mechanical environments. With a 330 VAC rating and 50/60 Hz frequency compatibility, it provides the necessary phase shift to initiate motor rotation in compressors and pumps where high static loads are present. Featuring standard dual blade terminals for fast field connections, this motor start capacitor is a direct replacement for industry number 11068 and Supco CS189-227X330 models. Operating within a temperature range of -40°C to 65°C, it meets EIA RS-463 Type 2 standards for performance reliability. Replace failing capacitors exhibiting swelling or leakage with the PRMJ189 to eliminate hard-start conditions and reduce excessive amperage draw during the motor's initial cycles.

Key Benefits

• High Dielectric Strength: Rated for 330 Volts to handle inductive voltage spikes during motor startup.
• Universal Fit: Case size 7 (2-1/16" Diameter x 4-3/8" Height) ensures compatibility with standard mounting brackets.
• Resilient Construction: Impact-resistant phenolic resin prevents environmental degradation and terminal arcing.
• Rapid Connection: 1/4" dual blade terminals allow for quick series or parallel wiring in the field.
• Intermittent Duty Optimization: Designed for up to 20 starts per hour with a 3-second motor start cycle.

Common Questions

What does the 189-227 MFD range signify for my motor?
The capacitance range indicates the microfarad rating threshold. As long as your original part falls within this 189 to 227 MFD window and the voltage rating is 330V or lower, this Packard PRMJ189 is an appropriate replacement.

Can I use a 330V capacitor if my original was rated for 250V?
Yes. In HVACR service, you can always go up in voltage rating (e.g., replacing a 220V/250V with a 330V), but you must never install a capacitor with a lower voltage rating than the original component.

How do I know when a start capacitor needs replacement?
Look for physical signs like a popped top-relief valve or use a multimeter to check the MFD reading. If the motor hums but fails to turn over, the start capacitor is typically the primary failure point.

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.