Littelfuse FLSR020ID Indicator Fuse 20A 600VAC 300VDC Slo-Blo Industrial Cartridge

The FLSR_ID Series Indicator fuses from Littelfuse are designed for a broad range of applications, from industrial control panels to service entrance switches, making them a versatile choice for various general purpose circuits. One of their standout features is the built-in blown fuse indication, which enhances safety by providing immediate visual feedback—users can quickly ascertain whether a fuse has blown without needing to test or guess. This feature reduces the risk of accidents while eliminating the downtime associated with determining fuse status, as indicated by a dark window on the fuse itself when opened. Enhanced with superior overload and short circuit protection, these fuses are not only effective in preventing equipment damage but also assist in minimizing inventory needs. Their robust performance characteristics enable them to serve multiple applications, thereby streamlining fuse management. The FLSR_ID Indicator fuses also boast excellent time-delay features, which help to prolong fuse life by reducing nuisance openings, making them a reliable option for both main and branch circuits in motor control centers and panelboards. With an interrupting rating of 20,000A at 300VDC and a maximum voltage of 600VAC, these fuses integrate safety, efficiency, and practicality into one dependable solution.

• Built-in blown fuse indication for immediate visual status
• High interrupting rating of 20,000 A at 300 VDC for enhanced safety
• Dual-element time-delay design for short circuit and overload protection
• UL Listed and CSA Certified for industry safety standards
• Indicator fuse design reduces downtime by eliminating fuse testing
• Superior time-delay feature reduces nuisance openings and extends fuse life
• Compatible with general purpose circuits including motor control centers and service entrance switches
• Reduces fuse inventory by supporting multiple applications
• Suitable for industrial control panels, distribution panelboards, and switchboard mains
• Class RK5 compliant for consistent replacement and system integration

• Voltage AC: 600 V
• Voltage DC: 300 V
• Ampere Rating: 20 A
• Interrupting Rating DC: 20,000 A @ 300 VDC
• Opening: Time Delay (Slo-Blo)
• Fuse Type: Dual Element, Time Delay, Indicator
• Standard: Class RK5, 248-12
• Approvals: UL Listed, CSA Certified
• Material: Solid state indicator design

Certification

Datasheets