This switch is a direct replacement for the 611187 rotary switch found on most models of Associated Eqpt chargers (6001, 6001A, 6002, 6002B, 6009, 6009A, 6010, 6010B, etc.). It is EXACTLY the same switch offered as Associated PN 611187. 4 "ON and 4 "OFF" positions - "ON" positions are at 12, 3, 6, and 9 o'clock. The intermediate positions at 1:30, 4:30, 7:30 and 10:30 are "OFF" positions. Designed to be easy to install through a 7/16" stem-mounting hole. Wire terminals use .250" industry-standard solderless push-on connectors. No specialty tools required.