SPP6 Hard Start Capacitor for AC Compressor 115-288V AC | (1/2 Thru 10 H.P.) Compatible with Supco Relay Increases

Key features

• IMPROVED EFFICIENCY -- Increases compressor startup torque by up to 500%—helping your air conditioner start quickly even in hot weather or under low voltage conditions. Reduces the load on the system during startup.
• EXTENDS COMPRESSOR LIFE --Effectively prevents problems with aging compressors, such as failure to start, intermittent startup, and excessive operating noise. Helps shorten the duration of startup current and improve overall efficiency. Gives your old equipment a new lease on life without having to replace the entire system.
• WIDE COMPATIBILITY -- Replacement parts include SPP6, TJ90HS6, AP4502872, 35702, DST-6, ERPP6, HS6, and HS650. Suitable for PSC-type compressor starter motors with rated power ranging from 115–288, 1/2 to 10 HP, such as those in refrigeration compressors, heat pumps, refrigerators, and heavy-duty, frequently started motors.
• NO REWIRING REQUIRED -- Features a series wiring configuration with a PTC thermistor—simply connect the two wires to the compressor’s “S” (Start) and “R” (Run) terminals. Disconnect the power supply before installation. Compatible with most PSC compressors equipped with standard spade connectors. If your older model has a round plug or special latch, do not force a wiring modification.
• STABLE AND RELIABLE -- Features metalized zinc-aluminum foil with reinforced edges and internal components encapsulated in epoxy resin for more stable performance. Constructed with a PBT flame-retardant housing and thick copper leads—heat-resistant, moisture-proof, and oxidation-resistant. Delivers stable performance in applications with frequent start-stop cycles, such as refrigerators and heat pumps.
• ❌ NOT FOR: Units manufactured after 2016 (most already have built-in start assist – adding this may cause short-cycling). ❌ AVOID OVERLOAD: If your compressor is severely aged (over 15 years old with weak windings), this kit may not solve mechanical seizing. We recommend a professional HVAC diagnosis first.

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