Always match the MFD value exactly. Voltage can be equal or higher (440V replaces 370V) but never lower. Round and oval are interchangeable if the MFD and voltage match.
3W3 – HARD START KIT (3 WIRE, 4-5 TON)
$52.86
Supco 3W3 hard start kit for 4-5 ton compressors. 3-wire design with potential relay and start capacitor. Heavy-duty option for the largest residential systems.
10226 Plano Rd, Suite 104, Dallas TX 75238
Questions? Call or text (214) 340-9421
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm
Description
If your compressor hesitates or trips the breaker on hot days, a hard start kit helps. The Supco 3W3 is a heavy-duty 3-wire kit with relay and start cap for large 4-5 ton compressors in bigger homes and commercial systems.
Specs: 3-wire, 4-5 ton, potential relay + start cap, Supco CSRU3
Replaces: 3W3, CSRU3
Fits: Single-phase compressors in 4-5 ton AC and heat pump systems. All major brands.
Need help? See our AC Not Cooling Troubleshooting Guide or Capacitor Cross-Reference Chart.
In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.
