Littelfuse semiconductor fuses are designed to protect today's equipment and systems. They are manufactured with Littelfuse-developed technology that sets tomorrow's standards for accuracy, consistent quality, reliability, and predictable performance. These fuses are designed specifically for supplementary protection of semiconducting devices such as silicon controlled rectifiers (SCR's), diodes, thyristors, triacs, transistors, and similar solid-state devices. They can be used wherever extremely fast-acting, current-limiting fuses with no time delay are required.
Littelfuse semiconductor fuses are designed for supplementary protection of semiconducting devices such as silicon controlled rectifiers (SCRs), diodes, thyristors, triacs, transistors, and similar solid‑state devices. They are used in power equipment including variable speed drives, power rectifiers, UPS systems, DC power supplies, and a wide range of electronic equipment where extremely fast‑acting, current‑limiting fuses with no time delay are required.
The series offers voltage ratings from 150 VAC to 700 VAC, interrupting ratings up to 200,000 A·rms (AC) and 20,000 A (DC), and ampere ranges from 1 A to 1000 A. The fuses are UL and CSA recognized, feature low I²t and peak let‑through currents, and are dimensioned for a variety of ampere ratings.
| Interrupting Rating (AC) | 200,000 A·rms (L15S series 100,000 A·rms) |
|---|---|
| Ampere Range | 1 – 1000 A |
| Approvals | UL Recognized, CSA Recognized |
They are designed for supplementary protection of semiconducting devices such as silicon controlled rectifiers (SCRs), diodes, thyristors, triacs, transistors, and similar solid‑state devices.
The AC interrupting rating is 200,000 A·rms, with the L15S series limited to 100,000 A·rms.
Yes, Littelfuse semiconductor fuses are UL recognized under the Components Program.
The series covers ampere ratings from 1 A up to 1000 A.