3S1-SP9-B5-M1-QE is a sub-miniature pushbutton switch from the 3S1-Series, designed for momentary switching applications. This single-pole switch features a 10-48 threaded actuator (B5 style), solder lug termination (M1), and silver contacts with silver terminal plating rated at 1A @ 125VAC or 28VDC. The switch offers an electrical life of 50,000 make and break cycles at full load, with contact resistance of 20 mO maximum initial and insulation resistance of 1000 MO minimum. Operating over a temperature range of -30°C to +85°C with dielectric strength of 1500 Volts RMS at sea level, this switch includes an epoxy seal for enhanced protection. Typical applications include instrumentation, telecommunications, networking, performance audio, computers, and low power on/off designs.