In contrast with existing fuse solutions that cannot meet high-voltage and short-circuit test requirements, the 5 x 20 mm 487 series fuse from Littelfuse protects telecom power supply units and data center server power applications where a high-voltage DC interrupting rating is required. This compact ceramic body fuse is designed to ensure the best coordination between a power supply unit (PSU) and an electrical circuit breaker panel during short-circuit and over-current faults.

 Fuse Products

Introduction to Circuit Protection - Fuseology 101

Features

• Lower I²t and faster tripping
• High current ratings up to 16 A in a 5 x 20 mm footprint
• High voltage rating for both 420 V_AC and 420 V_DC

Benefits

• Ensures short-circuit and over-current fault in PSU is protected by a fuse opening in the PSU instead of circuit breaker opening in the electrical panel, which causes power outage in the entire branch circuit
• Space-saving on the PCB in high-power applications
• Suitable for high-power 3-phase applications, inverters, and ballasts
• Optimal for high-voltage DC applications in data center power distribution, telecom, and intelligent commercial building applications