Fused Fuses
The document provides the full technical specification for the Wickmann 303 TR3 fuse series. It lists the current and voltage ratings, breaking voltage, power dissipation, melting integral and other electrical characteristics for each fuse size.
Physical details such as lead lengths, overall dimensions, material construction, operating temperature range, climatic category, and environmental test results are also included. Approvals (UL 248‑14, CSA C22.2 No. 248.14) and packaging options are described, along with a time‑current characteristic curve.
| Rated Current | 0.05 A – 5 A (varies by part) |
|---|---|
| Lead Length (Long) | 18.8 mm |
| Lead Length (Short) | 4.3 mm |
| Climatic Category | -25 °C/+70 °C/21 days (EN 60068‑1..3) |
| Lead Pull Strength | 10 N (EN 60068‑2‑21) |
| Soldering Heat Resistance | 260 °C for 10 s (IEC 60068‑2‑20) |
| Approvals | UL 248‑14, CSA C22.2 No. 248.14 |
The fuse is available with rated currents from 50 mA up to 5 A, as shown in the rating table.
It is UL listed (File No. E 67006) and CSA certified (File No. 51378).
Long leads are 18.8 mm and short leads are 4.3 mm.