For anyone sorting through vfds soft starters motor controls, the first fork in the road is whether you need a soft start or a true adjustable-speed drive. The 1/2/4/6/8KW single-phase soft starter at $48.59 ramps voltage during startup to protect both motor and driven equipment. The Leeson Adjustable Speed AC Motor Control at $229.99 is an industrial VFD that varies output voltage to change motor speed. The right pick comes down to motor size, supply voltage, and how much control you actually need.
Quick Verdict
If your budget is tight and your motor is a single-phase unit, the soft starter is the simpler, lower-cost pick. It gives you adjustable soft-start timing without adding a full drive. If you need adjustable running speed in a small industrial motor, the Leeson VFD is the more capable controller, and you should be comfortable with its New - Open box condition.
Comparison at a Glance
| Product | Price | Key specs | Best for |
|---|---|---|---|
| 1/2/4/6/8KW motor Soft Start Soft Starter Single Phase Soft Starter AC 220V | USD 48.59 | Single-phase AC 220V; rated 110V-380V; adjustable ramp up to 30 seconds | Budget-friendly soft starting |
| Leeson Adjustable Speed AC Motor Control 174264.00 Industrial VFD | USD 229.99 | 120V input, 0-230V output, 2.4A output, 1/2 HP | Adjustable-speed control of small AC motors |
Where Each Product Wins
- The soft starter wins on cost and simplicity. It uses two potentiometers, one for starting voltage and one for soft-start time, so you can tune the launch of a single-phase motor without complex programming.
- The Leeson wins on capability. It is an adjustable-speed drive with 0-230V output, so you can change motor speed rather than only shaping the startup ramp.
Product Notes
1/2/4/6/8KW motor Soft Start Soft Starter Single Phase Soft Starter AC 220V
This single-phase soft starter is the lower-cost option in this pairing, and it is built around a straightforward idea: adjust the starting voltage and the ramp time so the motor comes up to speed gently. The description shows the start potentiometer and soft-start potentiometer working together. At a 220V supply, a half turn gives roughly 55V at start and about 22 seconds of ramp, while a full turn reaches 110V to 220V in about 15 seconds. It also handles 380V, where the start range moves to 190V to 380V. The listed kilowatt variant is B-1.5KW, so it suits smaller single-phase motors. The limitation is the scope: it focuses on soft starting, not adjustable running speed. If that matches your motor and your budget, it is an easy pick.
Leeson Adjustable Speed AC Motor Control 174264.00 Industrial VFD
This Leeson VFD is the higher-priced option, and it brings a different tool to the bench. It takes 120V AC input at 9.2A and delivers 0-230V output at 2.4A, with a 1/2 HP rating. That makes it a compact industrial drive for changing speed on a small AC motor, whether you are running a conveyor, pump, or fan. The condition is listed as New - Open box, so the unit itself is new but the box has been opened. The limitation is the rating: 1/2 HP keeps it in the small-motor class, and the 120V input means you need the right supply for your shop. If your application needs adjustable speed rather than just a soft start, this drive is the one to choose.
Final Choice by Use Case
For a single-phase motor that needs controlled startup on a tight budget, the 1/2/4/6/8KW Soft Starter is the sensible choice. For a small industrial motor where you want adjustable speed, the Leeson Adjustable Speed AC Motor Control is worth the higher price. The price spread between the two is $181.40, so the decision is really about whether speed control justifies the jump.
