Packard PRMJ88 Start Capacitor

The Packard PRMJ88 is a high-performance 88-108 MFD start capacitor engineered for intermittent AC motor starting applications within HVACR and industrial pump systems. Rated for 330 VAC, this non-polarized electrolytic start capacitor provides the necessary phase-shift torque to bring single-phase compressors and fan motors up to speed rapidly, protecting windings from excessive inrush current. Encased in a moisture-resistant, molded phenolic resin round housing, the unit is built to withstand the rigorous temperature fluctuations of mechanical rooms, with an operational range from -40°C to 65°C. This HVAC start capacitor features standard 1/4-inch dual blade terminals for fast field installation and is a direct motor start capacitor replacement for most systems requiring an 88-108 microfarad rating. Designed for 50/60 Hz circuits, it integrates seamlessly into existing capacitor clusters, ensuring reliable starting cycles in even the most demanding high-torque environments.

• Enhanced Starting Torque: Effectively bridges the gap between idle and 75% operational speed to prevent motor stalling.
• Durable Construction: The rugged phenolic case resists oil and moisture, preventing dielectric breakdown in high-humidity HVARC environments.
• Universal Compatibility: The 330V rating allows for safe use as a replacement for lower voltage (125V or 250V) units of the same MFD range.
• Standardized Fit: 2-1/16 inch diameter and 3-3/8 inch height ensure compatibility with most existing mounting brackets and motor covers.

Can I use this 330V capacitor if my original was 250V?
Yes. In capacitor replacement, you can always go up in voltage rating (e.g., replacing 250V with 330V), but you must never go lower than the original equipment specification. The capacitance range (88-108 MFD) must remain the same.

What causes these capacitors to fail prematurely?
Most start capacitor failures are the result of a faulty starting relay or centrifugal switch. Since these are rated for intermittent duty, if the motor fails to drop the start capacitor out of the circuit within seconds, the unit will overheat and vent or rupture.

Do I need to install a bleed-off resistor?
Some OEM applications require a 15k ohm resistor across the terminals to discharge the unit between cycles. If your original unit had a resistor, it is standard practice to transfer it or install a new one on the Packard PRMJ88 to protect the starting relay contacts.

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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.