Keylock Switches: Type - KeyLock Switch; Circuit Configuration - SPDT; Circuit Operation - On-Off-On (maint); Amps/250V - 3A/250Vac; Voltage - 250Vac; Terminals - Solder Lug; Terminal Size - 0.106 x 0.031 in; Contacts - Silver; Key Removal Position - Center; Mounting Type - Threaded Bushing; Mounting Size - 16 mm Diameter; Temperature Range - -13 to 158 deg F (-25 deg to 70 deg C); Additional Information - Key Code: AT4146, One Tubular Key Furnished, High Security; Manufacturer Series - CK Series