On today’s overhead distribution systems, fuse cutouts are assigned an essential role in system and equipment protection. The key determinant of a cutout’s ability to function properly is the fuse link it uses. Failure of the fuse link to perform as planned can result in miscoordination with other protective devices, nuisance operations (“sneakouts”), and needless outages. To a utility that’s dollars and cents — and not just the cost of the replacement fuse link. The expense of finding and replacing fuse links that sneak out can cost many times the up-front savings achieved through the use of less expensive fuse links.

Positrol Fuse Links address these issues with features unavailable in any other fuse link.

• Nondamageability. Positrol Fuse Links have permanently accurate time-current characteristics. They’re unaffected by mechanical shock, vibration, or transient current surges that heat the element nearly to the severing point — eliminating sneakouts.
• Close melting-current tolerance. Positrol Fuse Links have a melting-current tolerance that’s typically half that of other fuse links — permitting closer fusing for improved protection, more precise series coordination for enhanced service reliability.
• Superior fault-interrupting performance. Positrol Fuse Links provide unsurpassed protection against all types of faults, including low-current transformer secondary-side faults.

S&C's Positrol Fuse Links are manufactured in accordance with a quality system certified to ISO9001:2000.