164TL511 is a 16mm rectangular illuminated pushbutton switch from the Command Series, featuring push on/push off maintained action with 1 N.O. & N.C. snap-acting double break contacts. The contacts are gold plated over silver clad, providing reliable operation for both logic level and power switching applications with a contact rating of 0.4 VA at 20 VDC or 5 A at 250 VAC/24 VDC resistive. Key electrical specifications include initial contact resistance of 20 milliohms max, insulation resistance of 100 megohms min, and dielectric strength of 1,500 VAC. The switch operates within a temperature range of -20°C to +50°C and offers IP40 protection rating in non-oiltight configuration. Ideal for instrument-grade applications requiring visible status indication, the switch uses T1-3/4 midget flanged base lamps and is UL Recognized and CSA certified.