SM4A1L57: 4 Amp Single Speed Soft Start 3HP at 575V

SM4A1L57: 4 Amp Single Speed Soft Start 3HP at 575V

Marsoni

M251S

$262.50

Get it in 3 business days with 1 day shipping. Friday, May 29

SM4A1L57: 4 Amp Single Speed Soft Start 3HP at 575VSM4A1L57: 4 Amp Single Speed Soft Start 3HP at 575V This model is a single speed Smooth Move model that is ideal for all systems, whether they reverse or not. This device eliminates belt, drive train and gear wear and tear. This Power Electronics device is designed to be compatible with trolleys, overhead doors and cranes, bottling equipment, monorail, conveyors, textile machines etc. Features: Size: 5x 5x 3. 625 Phase loss protection on input Time

Easy Shipping

Quick Dispatch:

Your SM4A1L57: 4 Amp Single Speed Soft Start 3HP at 575V orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your SM4A1L57: 4 Amp Single Speed Soft Start 3HP at 575V ships.

Need Help?
Questions about SM4A1L57: 4 Amp Single Speed Soft Start 3HP at 575V, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for SM4A1L57: 4 Amp Single Speed Soft Start 3HP at 575V in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Got these to store a DeWalt cordless drill and impact driver on the side of a Gladiator garage cabinet -- and they work perfectly for that. The magnet is incredibly strong, easily supporting the bare tools, and seems even to work perfectly well with an 8ah XR battery on the tool -- not that it's necessary since I don't store them like that. I like that the magnet is padded with rubber. Very nice units, I will get more for sure to store other items.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 26, 2026