The C&K 3502 series is a heavy-duty single-pole, double throw (SPDT) type on/off/momentary-on momentary-off switch with a 4.8 x 7.0mm plastic surface mount package. It has a rated-voltage of 16VAC, current of 0.4A, operating temperature range of -20 to 85 degrees Celsius, and a total travel of 0.4mm. It is designed for use in a wide range of applications, including telecommunications equipment, industrial controls, and automotive dashboards. The contact configurations available in this series include normally open (NO), normally closed (NC)and short-circuit (SC). The varying sizes within the series include a 2 and 3 toggle switch.