Enhanced Fusesaver™ ultra-fast circuit breaker, now with open-close-open functionality, includes advanced protection and communication capabilities. Read about this next generation of Fusesaver in the press release issued Tuesday, February 9, 2016. Read about how the Fusesaver now has 6.3 kA fault interrupting rating and Open-Close-Open functionality (O-CO) in the press release issued February 27, 2017.
Fusesaver is a new class of intelligent, compact and low cost single-phase circuit breakers that minimizes lost customer minutes by protecting lateral line fuses from blowing on transient faults. About 80 percent of a rural network’s faults are transient, with the result that 80 percent of its fuses are blown unnecessarily, causing downstream customers to lose power and requiring a line crew to inspect the line and replace the fuse link.
Fusesaver is extremely light at only 12 lbs (5.5 kg) and hangs directly from the medium-voltage line. It is connected in series with the fuse that it is protecting, and self powers from line current.
With on-board microprocessor control and wireless connectivity, Fusesaver has configurable protection, multiphase operation functions, on-board event history and can be integrated into a SCADA system for remote control.
Fusesaver can detect, open and clear a fault in as little as one-half cycle, which is less time than it takes the fuse to melt for moderate faults. After a predefined dead time, the Fusesaver automatically closes, reconnecting the supply. If the fault is transient, the fuse is unaffected. If the fault is permanent, Fusesaver then allows the fuse to operate, isolating the faulted line.