Supco SPP4E E-Series Hard Start Kit Electronic Potential Relay Capacitor Combination

The Supco SPP4E E-Series Hard Start Kit is an advanced electronic potential relay and start capacitor combination designed to improve compressor startup performance in air conditioning, refrigeration, and heat pump applications. This hard start device combines state-of-the-art electronic potential relay (EPR) technology with a built-in safety timing circuit to provide superior reliability and compressor protection.

Key Features:

• Electronic potential relay technology with backup timing circuit for compressor protection
• Rated for 90-130 VAC operation with 1/8 to 1 HP compressors
• 88-106 MFD start capacitor rating
• Voltage sensing with instant restart capability
• Simple 2-wire installation - connects in parallel with run capacitor or directly to compressor
• Compatible with PSC (Permanent Split Capacitor) and CSIR (Capacitor Start Induction Run) type compressors
• Ideal for RV air conditioners, refrigerators, freezers, and low-voltage applications

The SPP4E provides enhanced starting torque for compressors operating on limited power sources such as generators or inverters, making it particularly popular for RV and off-grid applications. The electronic timing circuit ensures the start capacitor disengages properly after startup, protecting the compressor from damage while enabling reliable operation even in challenging electrical conditions.