Ferraz Shawmut TRS400R Tri-Onic Fuse

Ferraz Shawmut TRS400R Tri-Onic fuse is a 400 Amp overcurrent protection device from Ferraz Shawmut, identified by model TRS400R in the Tri-Onic line. It is designed to interrupt fault currents to protect electrical circuits and equipment from damage due to overloads. The 400 A rating provides a precise specification for selecting this fuse in electrical protection schemes within high-current installations. As a fusible device, the TRS400R accomplishes circuit interruption by melting its internal link when current exceeds the rating, thereby opening the circuit and limiting damage downstream. The Tri-Onic designation indicates its place within Ferraz Shawmut's family of protective fuses, offering a standardized part that can be referenced in electrical drawings and maintenance records. This description covers the essential identity and rating of the TRS400R fuse, enabling engineers and buyers to match it to system protection needs and to order the correct replacement within the Ferraz Shawmut lineup.