Supco MPR1 Ultra Start Hard Start Kit 3.5-5 HP 270-324 µF 330V

The Supco MPR1 Ultra Start Series Hard Start Kit combines a mechanical potential relay (MPR) and start capacitor to provide reliable compressor starting for residential and commercial HVAC and refrigeration applications. Designed for 3.5 to 5 HP compressor systems, this kit increases starting torque and reduces strain on the compressor motor during startup.

Key Features:

• Mechanical potential relay with 270-324 µF start capacitor rated at 330V
• Simple 2-wire installation for quick setup
• Compatible with PSC (Permanent Split Capacitor) and CSIR (Capacitor Start Induction Run) type compressors
• Instant re-start capability and voltage sensing technology
• Operating voltage: 208-277 VAC
• UL Recognized and NATE Certified (Course #1867-0002)
• OEM approved technology for multiple applications

This hard start kit helps extend compressor life by reducing startup stress and current draw, making it ideal for retrofit applications or challenging starting conditions. The compact design measures approximately 8.2 inches long and includes all necessary mounting hardware.