This document introduces Littelfuse's 125VAC fast-acting or time-delay plug fuses, including product types, specifications, and applicable ranges.
This leaflet provides an overview of Littelfuse plug fuses, including Edison‑base series (WOO, TOO, TLO) and Type S series (SLO, SOO). It lists construction details, typical applications, and ampere rating tables for each series.
The document also explains SAO adapters that permanently convert Edison‑base fuseholders to accept only Type S fuses, notes UL listing, and cites NEC allowances for using 125 V rated fuses in circuits up to 150 V.
| Voltage rating | 125 VAC |
|---|---|
| Approval | UL Listed |
| WOO Fuse Ampere Ratings | 2 A, 5 A, 8 A, 15 A, 25 A |
No, Edison‑base fuses will not fit Type S fuseholders, and Type S fuses will not fit Edison‑base fuseholders.
SAO adapters permanently convert Edison‑base fuseholders to accept only Type S fuses, preventing installation of wrong‑size fuses.