If the power switch on your Dewalt table saw (models DWE7485 or DWE7491RS) has failed, won't stay on, or is acting up, this is the exact replacement part you need. This is the magnetic start/stop switch (Dewalt part number N603746) that controls the main motor. It's a 115/120VAC switch.
A magnetic switch is a safety feature – if power is interrupted, the saw won't restart automatically when power comes back on; you have to press the start button again. Replacing a faulty switch can bring your saw back to life and ensure it's operating safely.
This is a direct OEM-compatible replacement. Installation requires disconnecting the saw from power and some basic wiring knowledge. Make sure you note exactly how the old switch is wired before removing it, or take photos. If you're not comfortable working with electrical components, it's best to have a professional handle the repair. For the DIYer, this is a straightforward fix to avoid buying a whole new saw.