This Leybold start/stop switch fits all TURBOVAC i series turbo pumps including 90i, 250i, 350i, 450i, 850i, 950i, 1350i, and 1450i. It attaches directly to the pump's remote 15 pin HD (X1) connector and allows the operator to manually switch the pump from run to standby.

This start/stop switch fits:

• TURBOVAC 90i
• TURBOVAC 250i
• TURBOVAC 350i
• TURBOVAC 450i
• TURBOVAC 850i
• TURBOVAC 950i
• TURBOVAC 1350i
• TURBOVAC 1450i

This start/stop switch has Leybold part number 800110V0021.