Witnessed Test Data Program (WTDP)
ISO/IEC 17025 (General Requirements for the Competence of Testing and Calibration Laboratories) standard, permanent authorization.
SETsafe | SETfuse Testing and Verification Laboratory has obtained the permanent authorized Witnessed Test Data Program (WTDP) qualification from Underwrites Laboratories Inc. (UL) and German TÜV Rheinland (TUV).
WTDP Certificate (Perpetual License)
UL & TUV_Authorized Testing Lab_WTDP Certificate_SETsafe & SETfuse.pdf
TUV Certificate Update Information (Valid until April 16, 2026)

Advantages:
Saves time on a series of processes such as sample transportation and testing wait times, thereby accelerating the product’s time to market.
SETsafe | SETfuse can conduct all relevant product tests using its own laboratory equipment under the on-site witnessing of UL engineering technical experts.
SETsafe | SETfuse also holds TUV independent testing qualification.
UL
UL has recognized and authorized the testing capabilities of the SETsafe | SETfuse Testing and Verification Laboratory for the following standards:
UL 60691, CSA C22.2 No. 60691:19 (Products: Thermal-Links, Thermal Fuses, Thermal Cutoffs / Alloy-type —Learn more, Thermal-Links / Organic-type — Learn more)
UL 1449, 5th Edition, Dated: 2021-01-08(Surge Protective Devices)
UL 1434, 1st Edition, Revised: 2020-05-18(Thermistors).
CSA Component Acceptance Service, T.I.L. Type No.9073-31, Dated: 1991-07-09.
CSA C22.2 No.269.5, 2nd Edition, Dated: 2017-09. (Surge Protective Devices — Type 5 — Components).
CSA C22.2 No.269.4, 2nd Edition, Dated: 2017-03. (Surge Protective Devices — Type 4 — Devices).
CSA C22.2 No.269, Dated: 2021-04. (Surge Protective Devices — Type 4 — Devices).
TÜV Rheinland
TÜV Rheinland has recognized and authorized the testing capabilities of the SETsafe | SETfuse Testing and Verification Laboratory for the following standards:
IEC 60691:2023.
IEC 61051-1:2018.
IEC 61051-2:2021.
IEC 61051-2-2:1991.
IEC 62368-1:2023 Annex G.8.
IEC 61643-11:2011.
IEC 61643-21:2012.
IEC 61643-31:2018.
IEC 61643-311:2013.
IEC 60127-1:2023.
IEC 60127-2:2014+A1.
IEC 60127-3:2015+A1.
IEC 60127-6:2023.
IEC 60127-7:2015.
EN IEC 60691:2023.
EN IEC 61051-1:2018.
EN IEC 61051-2:2021.
EN IEC 62368-1:2024 Annex G.8.
EN 61643-11:2012+A11.
EN 61643-21:2001+A1+A2.
EN 61643-31:2019.
EN 61643-311:2013.
EN IEC 60127-1:2024.
EN 60127-2:2014+A1.
EN 60127-3:2015+A1.
EN IEC 60127-6:2024.
EN 60127-7:2016.
The following products of SETsafe | SETfuse can be tested by WTDP:
Over Temperature Protection Components
ATCO. Learn more
OTCO. Learn more
Over Voltage Protection Components
TVS. Learn more
GDT. Learn more
MOV. Learn more
TFMOV. Learn more
SPD. Learn more
Over Current Protection Components
Mini Fuses. Learn more
Active Protection Components
iTCO. Learn more
Update: Apr, 2026