Description
Product Summary
The Supco MPR1 Ultra Start Series Hard Start, Ks-1 is a professional-grade replacement part from Supco (Sealed Unit Parts Co.), a trusted name in HVAC/R and appliance parts since 1945. Hard Start Kit Mechanical Potential Relay (MPR) and Start Capacitor.
Hard start kits give a struggling compressor the extra starting torque it needs on low-voltage days, after long off-cycles, or when an aging compressor begins to trip on locked-rotor amps. Adding the correct hard start reduces start-up current spikes, cuts down on nuisance breaker trips, and can extend compressor life on PSC-type single-phase systems. Always match the kit to the compressor horsepower and system voltage.
Key Features
- Can be used on PSC and CSIR type compressors
- Easy 2-wire installation
- Instant re-start
- Mechanical Potential Relay
- NATE® Recognized (Course #1867-0002)
- OEM approved technology
- UL® Recognized
- Voltage sensing
- WARNING: Prop 65 info
Specifications
| Brand | Supco |
|---|---|
| Part Number | MPR1 |
| Part Type | Hard Start Kit |
| Capacitor Voltage | 330 VAC |
| Range (HP) | 3.5 to 5 HP |
| Capacitor (MFD) | 270 to 324 MFD |
| Operating Voltage | 208 to 277 VAC |
Ideal Applications
- Residential and light commercial air conditioners and heat pumps
- Hard-starting or locked-rotor compressors
- Low-voltage sites and long line runs
Frequently Asked Questions
Can the hard start be mounted sideways?
No, hard starts should always be upright.
Where do I attach the (2) wires? (Always disconnect power before installation)?
Attach (1) wire to Common, and the other to the Hermetic terminal on the Run Cap.
White Paper
- Supco MPR1 Product Specification Sheet (PDF)
- Supco MPR1 Product Specification Sheet 2 (PDF)
- Supco MPR1 Application Sheet (PDF)
What's Included
- (1) Supco MPR1 Ultra Start Series Hard Start, Ks-1
Safety: Always disconnect power and follow lockout/tagout procedures before servicing electrical components. Installation should be performed by a qualified technician.
