When you're comparing soft starters and motor controls, the first decision is load size. Are you trying to smooth the startup of a small motor, or are you dealing with the heavy inrush current of a residential AC compressor? These two soft starters answer that question differently: one is a low-cost module for a 2KW motor, and the other is a 16-32A AC soft starter.
Quick verdict
Choose the Single Phase Motor Soft Starter when you want an adjustable starting ramp for a smaller motor project. Choose the 16-32A AC Soft Starter when your motor load is a residential AC compressor and you need more current capacity and startup protection. The larger kit is built for a heavier motor control job.
Comparison at a glance
| Product | Price | What it's for |
|---|---|---|
| Single Phase Motor Soft Starter | USD 50.99 | Adjustable soft starting for a single-phase motor module |
| 16-32A AC Soft Starter w/ Reverse Motor Protection For 4-7 Ton AC Install Kit | USD 120.89 | AC compressor startup with reverse motor protection |
Where each product wins
- Single Phase Motor Soft Starter: wins on price and simplicity for smaller motor loads. It gives you adjustable start voltage and ramp time instead of extra capacity you may not need.
- 16-32A AC Soft Starter: wins on current capacity and built-in protections. It's aimed at residential AC units and built for compressor startup duties.
Product notes
Single Phase Motor Soft Starter
This is the more economical route into soft starting for a small motor. The unit is a single-phase soft starting module, and its specification points to a 2KW motor, so it's built around a lighter load than the AC kit. You get an adjustable ramp: the start voltage and soft-start duration can be set with the potentiometer, so you can decide how gently the motor comes up to speed. That adjustability is the main reason to pick it for a modest motor control setup. The trade-off is a narrower focus: it's a 2KW single-phase module rather than a multi-ton AC soft starter, which makes it better suited to small motor work than residential compressor startup. If your project is a small motor and you want soft starting without extra capacity, this is the more direct choice.
16-32A AC Soft Starter w/ Reverse Motor Protection For 4-7 Ton AC Install Kit
This starter is built for heavier motor loads. The title tells the story: a 16-32A current range, reverse motor protection, and a 4-7 ton residential AC focus in an install kit. At USD 120.89, it costs USD 69.90 more than the single-phase module, and that gap reflects the wider current range, the AC-specific protections, and the included one-year warranty. It's described as reducing the inrush current that AC compressors draw at startup, which makes it useful in HVAC systems and with portable generators. The low-voltage and over-current compressor protection offer extra security during a hard start. The limitation is that it's more than you need if you're only ramping a small single-phase motor; this one makes sense when the load in front of you is a residential AC compressor.
Final choice by use case
Choose the Single Phase Motor Soft Starter when you want a low-cost, adjustable start ramp for a small motor. Choose the 16-32A AC Soft Starter when you need the wider current range and reverse motor protection that suit a residential AC compressor. The right call comes down to what you're starting: the small module keeps the cost down, and the AC kit brings the protection.
