This datasheet is for the WICKMANN 601 series miniature fuse holders
The Littelfuse 601/602/522 series includes miniature fuse holders (No. 601), caps with and without silicon washers (No. 602) and an insulating cover for terminals (No. 522). These components are designed for panel‑mount applications and are RoHS compliant.
Key specifications include a rated voltage of 250 V, rated currents of 6.3 A (SEMKO/VDE) and 16 A (UL/CSA), and a rated power of 4 W. The caps provide IP 40 or IP 54 protection, and the mounting hole is 12.7 mm in diameter with a torque limit of 1.2 Nm. Electrical performance data cover dielectric strength, impulse voltage, insulation resistance and soldering limits.
| Rated Voltage | 250 V |
|---|---|
| Rated Current (SEMKO/VDE) | 6.3 A |
| Rated Current (UL/CSA) | 16 A |
| Rated Power | 4 W |
| IP Protection (Cap without washer) | IP 40 |
| IP Protection (Cap with washer) | IP 54 |
| Mounting Hole Diameter | 12.7 mm |
| Admissible Torque | 1.2 Nm |
| Operating Temperature Range | -25 °C to +70 °C |
| Dielectric Strength | > 15 kV |
| Impulse Voltage | 4 kV, 50 Hz, 1 min |
| Insulation Resistance | > 10⁸ MΩ (500 VDC, 1 min) |
| Solderability | 235 °C, 3 sec (Wave) |
| Soldering Heat Resistance | 260 °C, 5 sec |
| Unit Weight (Holder) | 4.0 g |
The rated voltage is 250 V.
The cap without a washer is IP 40, and the cap with a washer is IP 54.
The admissible torque is 1.2 Nm.
They can operate from –25 °C up to +70 °C.