TT13A2T04 is a single-pole single-throw (SPST) toggle switch manufactured by TE Connectivity/Alcoswitch, featuring an on-none-off action configuration. The switch is designed for 0.4 VA rated applications and includes a 10-48 UNS-2A threaded mounting stud with a 0.100 inch diameter. The switch features a compact form factor with a 0.206 inch pole spacing and 0.320 inch throw distance, along with oblong mounting holes (0.040 inch width × 0.080 inch length). This toggle switch is commonly used in control panels, instrumentation, and general electrical switching applications where reliable on-off functionality is required.