Supco hs600 Hard Start Kit 115-277V 0.5-5 Hp Single Phase

Product Description

The SUPCO hs600 is a compressor start assist kit designed to increase starting torque on single-phase compressors in residential and light commercial HVAC systems. Also referenced by cross-part numbers SPP5, WSX-5, and ERPP5, this hard start kit works across a wide voltage range of 115 volts through 277 volts and is rated for compressors from 0.5 HP through 5 HP. It reduces the time the compressor motor spends in the start winding during startup, lowering inrush current and extending compressor service life. Licensed HVAC technicians install this kit when a compressor exhibits hard-starting symptoms, trips breakers, or struggles to restart after short cycling.

The hs600 is suited for single-phase air conditioning and heat pump applications in residential and light commercial settings. It is a drop-in electrical add-on that mounts near the compressor contactor or in the electrical compartment of the condensing unit. The broad voltage compatibility makes it a practical stock item for technicians servicing equipment across varied electrical supply configurations. No dedicated starting relay is required for installation with this kit.

Key Features

• Increases compressor starting torque to aid hard-starting compressors
• Wide operating voltage range: 115 volts through 277 volts
• Rated for compressors from 0.5 HP through 5 HP
• Single-phase application only
• Compatible across air conditioning and heat pump systems
• Cross-references SPP5, WSX-5, and ERPP5 part numbers

Compatibility

Designed as an OEM-style replacement and aftermarket hard start solution for single-phase air conditioning and heat pump compressors rated between 0.5 HP and 5 HP operating on 115 volts through 277 volts.

Installation Notes

Installation is performed by a licensed HVAC technician. Disconnect and lock out all power to the condensing unit before servicing electrical components. The kit connects in parallel with the run capacitor on the compressor circuit; refer to the wiring diagram included with the kit for correct terminal placement. Do not install on three-phase compressors or compressors outside the rated HP range.

Technical Specifications

• Voltage Range: 115 volts through 277 volts
• Compressor HP Range: 0.5 HP through 5 HP
• Phase: Single phase
• Application: Air conditioning and heat pump
• Cross-Reference Part Numbers: SPP5, WSX-5, ERPP5

Standard Information

• Brand: SUPCO
• Manufacturer Part Number: hs600