The Littelfuse 482 Series Alarm Indicating Fuseholder is designed for use with the Littelfuse 481 Alarm Fuse. It is designed to accept other manufacturer’s replacement fuses as well.
The Alarm Indicating Fuseholder is designed for use with the Littelfuse 481 Alarm Fuse and can accept replacement fuses from other manufacturers. It is intended for telecommunications and control‑panel circuits.
Three versions are offered: a PCB‑mount type rated up to 15 A, a 15 A panel‑mount type, and a 20 A panel‑mount type. Each version includes keying to prevent insertion of a 20 A fuse, UL and CSA approvals, and detailed mechanical dimensions for mounting.
| Rated Current (PCB Mount) | 15 A |
|---|---|
| Body Material (PCB Mount) | Thermoplastic |
| Fuse Terminals (PCB Mount) | Tin‑plated Beryllium Copper |
| Alarm Terminal (PCB Mount) | Tin‑plated Brass |
| Operating Temperature (PCB Mount) | -55 °C to +125 °C |
| Rated Current (Panel Mount – 20A) | 20 A |
| Rated Voltage (Panel Mount – 20A) | 125 VAC/VDC |
| Body Material (Panel Mount – 20A) | Black Phenolic |
| Operating Temperature (Panel Mount – 20A) | -40 °C to +85 °C |
The PCB‑mount fuseholder is rated up to 15 amperes.
The fuseholder is keyed to prevent insertion of a 20 ampere fuse.
It is recognized under the Underwriters Laboratories (UL) and CSA Components Acceptance Programs.
The 20 A panel‑mount fuseholder operates from –40 °C to +85 °C.