Ⅰ: Code of product series: three-digit

     159: series 159 micro switch

Ⅱ: Rating: single-digit

     0: 0.1A 5VDC          1: 1A 125VAC UL

     2: 2A 125VAC UL    3: 3A 125VAC UL

     4: 0.5A    5: 1.5A    6: 2.5A

Ⅲ: Type of the handler: double-digit

     00: without handle    01: 1# handle  

     02: 2# handle           03: 3# handle

     03: 3# handle (11.5mm±0.1mm)

     06: 6# handle           17: 17# handle  

     23: 23# handle         26: 26# handle

Ⅳ: Color of button: single-digit

     1: blue      2: green      3: black     4: red

     5: yellow   6: white       7: gray

Ⅴ: Mark of cover: single-digit

     0: has no lever hole, no company mark

     1: has no lever hole, with “TTC”mark

     2: with “” mark

     3: with both“TTC”and“”mark

     4: soundless structure, with“TTC”mark on housing

     6: has lever hole, no company mark

     7: has lever hole, with“TTC”mark

Ⅵ: Color of base: single-digit

     0: base without positioning hole, black

     1: base with φ1.6 positioning hole, black

     2: base with φ2.0 positioning hole, black

     3: base with φ2.0 positioning hole, white

     4: without mounting hole, black

Ⅶ: Operating force of product: double-digit(gf)

 

Ⅷ: Life of product: single-digit

      0: 500,000 cycles     1: 1M cycles

      2: 2M cycles             3: 3M cycles

      4: 4M cycles             5: 5M cycles

      6: 6M cycles             7: 300,000 cycles

      8: 8M cycles             9: 10M cycles

Ⅸ: Code of terminal: double-digit    

      00: common straight terminal, length=3.2 mm

      01: common straight terminal, length=3.0 mm

      05: common straight terminal, length=5.0 mm

      06: common straight terminal, length=6.0 mm

      08: common straight terminal, length=8.0 mm

      11: common straight terminal, length=11.0 mm    

      20: left-bent terminal (Type L), length=2.0 mm

      22: left-bent terminal (Type L), length=2.8 mm

      23: left-bent terminal (Type L), length=3.8 mm

      24: left-bent terminal (Type L), length=4.0 mm

      25: left-bent terminal (Type L), length=5.2 mm

      26: left-bent terminal (Type L), length=6.5 mm

      28: left-bent terminal (Type L), length=5.8 mm    

      30: right-bent terminal (Type R), length=2.0 mm

      32: right-bent terminal (Type R), length=2.8 mm

      33: right-bent terminal (Type R), length=3.8 mm

      34: right-bent terminal (Type R), length=4.0 mm

      35: right-bent terminal (Type R), length=5.2 mm

      36: right-bent terminal (Type R), length=6.5 mm

      40: NC type, plastic damper, and terminal

            length=3.2mm

Ⅹ: Derivative code: double-digit  

      00: without special items

Ⅺ: Package: single-digit

      0=plastic bag           1=shrinked plastic package

      2=tape package       3=tube package  

      4=foam package      5=undetermined