Mersen (formerly Ferraz Shawmut) has debuted an Underwriters Laboratories 2579-listed range of dedicated photovoltaic fuses called the HelioProtection fuse line. The product line includes the HP6M, HP10M and HP6J models.
The new photovoltaic fuse line provides overcurrent protection at the combiner box and inverter levels and covers applications ranging from 1 A to 400 A, 600 VDC and 1,000 VDC. Low minimum breaking capacity capabilities of 1.35 times the fuse-rated current value allow for safe circuit interruption under typical low-fault current conditions produced by PV arrays, according to the company.
Primary customers for this fuse line are solar combiner and re-combiner box builders, solar inverter manufacturers, and solar installers and integrators.