The SW series of rocker switches has four different suffixes that can be added to the base part number and they are /U, /CUL, /C, and /CU.
The /U and /CUL suffixes indicate the same change to the base part number, meaning the switch is recognized by Underwriters Laboratories (UL) and has a UL part marking. these two suffixes signify that the switch is UL-recognized under UL file number E44145 and also features the UL emblem on the side of the switch.
The /C suffix at the end of the base part number, indicates that the switch is certified by the CSA Group (CSA) and has a CSA part marking. This suffix means the switch has been certified by CSA under CSA file number 023535_0_000 and features the CSA emblem on the side of the switch.
The/UC suffix at the end of the base part number, indicates that the switch has both the UL and CSA part markings. This suffix means that the switch is both recognized under the UL file and certified by CSA and will have both emblems on the switch. this is different than the other suffixes as they only cover UL or CSA and not both like the /UC suffix does.
If your SW rocker switch part number does not include one of these suffixes the switch will not have the UL and/or CSA part markings.
TechNote
There are some older SW series rocker switches that do have the UL and CSA part markings. These switches are now obsolete and use the same CSA file number but have UL file number: WOYR2.E44145. The obsolete SW switches also had an extra suffix, /V, which the newer SW switches do not. The /V suffix indicated VDE approval under VDE license number 119189 and had the VDE emblem on the side of the switch.
Applicable Part Numbers
| DigiKey Part Number | Manufacturer Part Number |
|---|---|
| 360-2725-ND | SW3821 |
| SW3833-ND | SW3833 |
| SW3831-ND | SW3831 |
| SW3831/U-ND | SW3831/U |
| 360-2926-ND | SW3001A |
| 360-3212-ND | SW3006A |
| SW3822-ND | SW3822 |
| 360-3311-ND,3937-SW3821D-ND | SW3821D |
| 360-2929-ND,3937-SW3821/U-ND | SW3821/U |
| 360-3862-ND | SW3821/CUL |
| SW3832-ND | SW3832 |
| SW3833/U-ND,3937-SW3833/U-ND | SW3833/U |
| 360-2928-ND | SW3821/UC |
| 360-2930-ND,3937-SW3821D/UC-ND | SW3821D/UC |
| 3937-SW3823D/U-ND,SW3823D/U-ND | SW3823D/U |
| 3937-SW3832/A/UC-ND,360-SW3832/A/UC-ND | SW3832/A/UC |
| 3937-SW3831/CUL-ND,SW3831/CUL-ND | SW3831/CUL |
| SW3832D/UC-ND,3937-SW3832D/UC-ND | SW3832D/UC |
| 3937-SW3833/CUL-ND,SW3833/CUL-ND | SW3833/CUL |
| 3937-SW3832/UC-ND,360-3175-ND | SW3832/UC |
| 3937-SW3007A-ND,SW3007A-ND | SW3007A |
| 360-2927-ND | SW3008A |
| 360-2932-ND | SW3823/U |
| 360-3312-ND | SW3823D |
| SW3003A-ND | SW3003A |
| 3937-SW3006A/C-ND,SW3006A/C-ND | SW3006A/C |
| 360-2931-ND,3937-SW3822/U-ND | SW3822/U |
| 3937-SW3822/CUL-ND,SW3822/CUL-ND | SW3822/CUL |
| 3937-SW3821D/328-ND,SW3821D/328-ND | SW3821D/328 |
| SW3822D/UC-ND | SW3822D/UC |
| SW3823D/UC-ND | SW3823D/UC |
| SW3832/U-ND,3937-SW3832/U-ND | SW3832/U |
| 3937-SW3832/A-ND,SW3832/A-ND | SW3832/A |
| 3937-SW3832/A/CUL-ND,SW3832/A/CUL-ND | SW3832/A/CUL |
| SW3002A-ND,3937-SW3002A-ND | SW3002A |
| SW3211-ND | SW3211 |
| SW3116-ND | SW3116 |
| SW3006A/U-ND | SW3006A/U |
| SW3821/A/UC-ND | SW3821/A/UC |
| SW3821D/U-ND | SW3821D/U |
| SW3823-ND | SW3823 |
| SW3823/CUL-ND | SW3823/CUL |
| SW3831D/UC-ND | SW3831D/UC |
| 360-SW3821D/CUL-ND | SW3821D/CUL |
| SW3831D-ND | SW3831D |
| SW3831D/U-ND | SW3831D/U |
| SW3822D-ND | SW3822D |
| SW3822D/U-ND | SW3822D/U |
| 360-SW3822D/CUL-ND | SW3822D/CUL |
| 360-SW3823D/CUL-ND | SW3823D/CUL |
| SW3832D/U-ND | SW3832D/U |
| SW3832D-ND | SW3832D |
| SW3833D/UC-ND | SW3833D/UC |
| SW3833D-ND | SW3833D |
| SW3833D/U-ND | SW3833D/U |
| SW3832Z035-ND | SW3832Z035 |
| 360-SW3832/CUL-ND | SW3832/CUL |
| SW3211-RO-ND | SW3211-RO |
| SW3006A/UCV-ND | SW3006A/UCV |
| SW3822/A-ND | SW3822/A |
| SW3006A/V-ND | SW3006A/V |