5-2-1 Compressor Saver CSRU2 Hard Start Kit – 3.5 to 5 Ton, 208/240V

The CPS Products CSRU2 5-2-1 Compressor Saver is a professional-grade hard start kit designed for 3.5 to 5 ton residential and light-commercial air conditioning systems. By combining a powerful start capacitor with a potential relay, the CSRU2 gives the compressor the extra torque needed during startup and reduces the amount of time it remains under high-amperage starting load.

Designed for single-phase air conditioning systems, this kit works with both scroll and reciprocating compressors. The start capacitor supplies the starting boost, while the potential relay removes the capacitor from the circuit once the compressor reaches operating speed. This helps support quicker, more dependable starts and may reduce wear on the compressor and associated electrical components.

Key Features

• Helps compressors start faster and more reliably
• Reduces high-amperage startup strain
• Compatible with scroll and reciprocating compressors
• Pre-wired 3-wire design for professional installation
• Suitable for hard-starting compressors and demanding startup conditions

Professional installation is recommended. Always verify compressor and equipment requirements before installation and disconnect electrical power before servicing HVAC equipment.