Packard PRMJ56 Start Capacitor

The Packard PRMJ56 is a professional-grade motor start capacitor engineered for intermittent duty on single-phase AC motors. Featuring a capacitance range of 53-64 MFD and a voltage rating of 330 VAC, this component provides the high torque necessary for reliable motor ignition. Built with a moisture and oil-resistant molded plastic round case, it measures 1-13/16 inches in diameter and 3-3/8 inches in height, ensuring compatibility with standard motor housings and mounting brackets. Designed for HVAC motor replacement, it manages up to 20 starts per hour with a three-second duration, maintaining optimal performance in high-cycle environments. The unit features dual-type terminals that accommodate both lead soldering and quick connect terminals, providing field flexibility for service technicians. This electrolytic capacitor is a direct cross-reference for many 53-64 uF 330V applications, ensuring stable power delivery and motor winding protection during the critical startup phase.

• Durability: Rugged, non-conductive polycarbonate case resists environmental contaminants and mechanical vibration.
• Terminal Versatility: Dual-blade terminals allow for fast spade-connector installation or permanent solder joints.
• Optimized Duty Cycle: Engineered to handle 20 starts per hour at frequencies up to 66 Hz for single-phase motor applications.
• Compact Form Factor: Standard 1-13/16" diameter fits most existing capacitor boots and clips.

Common Technical Questions

Can I use a capacitor with a higher voltage rating than 330V?
Yes, you can replace a 330V capacitor with one of a higher voltage rating (e.g., 370V), but never use one with a lower voltage rating as it will lead to immediate dielectric breakdown.

What happens if the capacitance rating (MFD) is outside the 53-64 range?
Using a rating outside the specified 53-64 MFD range can cause the motor to draw excessive current or fail to generate enough starting torque, potentially overheating the start windings.

How do I know if this start capacitor is failing?
Common indicators include motor humming without turning, sluggish starts, or visible bulging and fluid leakage from the capacitor casing.

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.