Safety switch SPS SafetyPowerSwitch 70V 60/120A – Hacker Motor Shop USA
Hobbywing - Safety E-Power Switch 300A - Electronics from 3DXR UK
Amazon.com: Rockler Safety Power Tool Switch - Heavy-duty 15 Amp Power Switch -"Stop Paddle" to Quickly Shut off Power - Safety Switch for Router Tables or Workbench - Router Table Accessories :