Quick take
Large motors pull a heavy inrush current at startup, which can cause light flicker, tripped circuits, or wear on compressors. A soft starter gradually ramps voltage to ease that surge. The four listed options range from a 9 FLA, 480V AC industrial unit at $94.99 to a 147A, three-phase starter with a 120V coil at $999.99. Between them sit two residential AC soft starters: an 8-16A unit for 1.75-3.5 ton systems at $110.42 and a 16-32A unit for 4-7 ton systems at $120.89 that includes an install kit.
Listed price comparison
| Product | Listed Price | Price Bar |
|---|---|---|
| SR22-09 Stellar Soft Starter 9 FLA 480VAC 50/60Hz Motor Control Industrial PLC | USD 94.99 | |
| 8-16A AC Soft Starter Motor Protection for Utility/Generator Power 1.75-3.5 Ton | USD 110.42 | |
| 16-32A AC Soft Starter w/ Reverse Motor Protection For 4-7 Ton AC Install Kit | USD 120.89 | |
| Sprecher Schuh PCXXE, PCE-147-600V-120V Motor Soft Starter 147A 3Phase 120V Coil | USD 999.99 |
Decision matrix
| Use Case | Best Match | Why |
|---|---|---|
| 480V industrial PLC motor control with a modest 9 FLA load | SR22-09 Stellar | Lowest listed price and a 480V AC rating for 50/60Hz operation |
| Utility/generator power for 1.75-3.5 ton residential AC | 8-16A OE Quality | New 230V soft starter with reverse motor protection and low-voltage/over-current protection |
| 4-7 ton AC with install hardware included | 16-32A ATTPARTS | New 16-32A unit, includes AC Soft Starter Install Kit, and reverse motor protection |
| High-amp three-phase motor | Sprecher Schuh PCE-147 | 147A 3Phase rating and includes an Allen Bradley contactor |
Product notes
8-16A AC Soft Starter Motor Protection for Utility/Generator Power 1.75-3.5 Ton
This new 230V soft starter is built around the 8-16A range and aimed at 1.75-3.5 ton residential AC units. It also works with HVAC systems, EV chargers, generators, and solar setups, and the feature set includes reverse motor protection, low-voltage protection, and over-current compressor protection. It is a strong fit if you need an all-round soft start for a smaller compressor and prefer a new unit. The limitation is the 16A ceiling: once your motor or air-conditioning load climbs beyond that, this unit sits outside its stated range.
16-32A AC Soft Starter w/ Reverse Motor Protection For 4-7 Ton AC Install Kit
For a larger residential system, this 16-32A starter carries reverse motor protection and is positioned for 4-7 ton AC units. The package includes an AC Soft Starter Install Kit, which is a practical addition if you are putting the starter in yourself. It works with HVAC systems, EV chargers, generators, and solar power. The clear limitation is the step up in price from the 8-16A model and the same application boundary: it is designed for the 4-7 ton range, not for high-current industrial motors.
SR22-09 Stellar Soft Starter 9 FLA 480VAC 50/60Hz Motor Control Industrial PLC
This used Stellar soft starter is the price leader on this list. It is rated for 9 FLA with 480V AC input and is presented for 50/60Hz industrial PLC motor control. The model SR22-09 is a 480V design from Stellar with United Kingdom origin. Choose it when your motor control is on the lower-amp side of industrial loads and you want to keep spending near the bottom of the range. The limitation is the 9A rating and used condition, so it will not cover the 147A class of work that the Sprecher Schuh unit is specified for.
Sprecher Schuh PCXXE, PCE-147-600V-120V Motor Soft Starter 147A 3Phase 120V Coil
At the other end of the scale, this Sprecher & Schuh unit brings a 147A, three-phase specification with a 120V coil. It also includes an Allen Bradley 100-E80KD00 contactor, making it a broader motor-starter package. The high capacity and three-phase orientation make it appealing for industrial or heavy motor applications. The limitations are equally clear: it is a used item, and its listed price is significantly higher than the other three starters, so it only makes sense for a high-current motor that actually needs the 147A range.
Final recommendation
- For utility/generator power with a 1.75-3.5 ton AC compressor, the 8-16A AC Soft Starter gives you a new 230V unit with reverse motor protection.
- For 4-7 ton AC and install hardware included, the 16-32A ATTPARTS unit is the direct match.
- For 480V industrial PLC motor control at the lowest listed price, the SR22-09 Stellar fits a 9 FLA load.
- For high-amp three-phase industrial use, the Sprecher Schuh PCE-147 includes the contactor and the highest current specification.
