If your single-phase motor is struggling to start or not kicking on at all, the centrifugal switch might be shot.

This L19-154S replacement switch is a common fix for that problem.

It fits a 19mm motor shaft and runs at 1500 RPM, which is standard for a lot of equipment like sewing machines, small power tools, and other light industrial gear.

The job of this switch is to cut the start winding out of the circuit once the motor gets up to speed.

When that fails, your motor either won't start or will draw too much current and overheat.

Swapping this part out can bring a dead motor back to life without having to buy a whole new machine.

That's a huge money saver.

It's made from quality metal materials—lightweight but sturdy enough to handle the vibration and heat of regular use.

Installation is pretty simple if you've got basic mechanical skills.

Just open up the motor housing, pop off the old switch (usually held on by a couple of screws or clips), and attach the new one.

Make sure the motor is unplugged first, obviously.

This switch is specifically designed for single-phase motors, so double-check that your motor type matches.

The 19mm diameter is the key measurement—if that fits, you're probably in business.

The safety aspect is nice too: it helps the motor start safely without that nasty hum or stutter you get when the start winding stays engaged.

Whether you're fixing an old sewing machine, a drill press, or a compressor, this centrifugal switch is a solid replacement part.

It's cheap, it's durable, and it'll get your equipment running again with minimal hassle.