FLSR350-ID - 350Amp Fuse

FLSR350-ID - 350Amp Fuse

When you're tracking down the right 350A Class RK5 fuse, the small details can make a big difference—and the FLSR350-ID has one particularly useful distinction: indication. This 350-amp dual-element time-delay fuse is rated for up to 600V AC and 300V DC and uses knife-blade construction for compatible fuse blocks, clips, and holders. Its Slo-Blo/Time Lag (T) opening characteristic allows appropriate short-duration startup or inrush current to pass without the fuse responding as in a fast-acting design.

Key Features and Benefits

• 350A continuous current rating – Intended for equipment and circuits specifically requiring a 350-amp fuse.
• Class RK5 fuse – Provides the fuse-class specification needed when matching an existing installation or equipment requirement.
• Indicating design – Helps maintenance personnel check fuse status during troubleshooting and distinguish this model from the standard non-indicating version.
• Slo-Blo / time-delay operation – Allows appropriate temporary startup and inrush currents without opening as quickly as a fast-acting fuse.
• Dual-element construction – Supports the time-delay operating characteristics specified for the FLSR350-ID.
• Knife-blade construction – Made for installation in compatible fuse blocks, clips, and holders.
  

Technical Specifications

• Catalog Number: FLSR350-ID
  
• Manufacturer Reference: FLSR350ID
  
• Series: FLSR_ID
  
• Product Type: Dual-Element Fuse
  
• Fuse Class: Class RK5
  
• Continuous Current Rating: 350A
  
• Maximum AC Voltage: 600V AC
  
• Maximum DC Voltage: 300V DC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Construction / Size: Knife-Blade
  
• Indicating: Yes
  
• DC Interrupting Rating: 20,000A (20 kA) at 300V DC
  
• Manufacturer-Listed AC Interrupt Amperage: 200,000A and 300,000A at 600V AC*
  
• Mounting Method: Fuse Block / Clip / Holder
  
• PG Holder: LFR60400 Series
  

Material Compliance and Certifications

The supplied product information specifically identifies the FLSR350-ID as a Class RK5 fuse. Specific catalog-level UL, CSA, RoHS, or other material-compliance and certification declarations were not included in the supplied specifications, so they should not be inferred from other products in the same family.

Where It Works Best

The FLSR350-ID makes sense when an electrical system specifically calls for a 350A Class RK5 time-delay fuse and an indicating configuration is preferred or required. Its time-delay behavior is useful in properly specified circuits where brief startup or inrush currents are expected during normal equipment operation. Instead of treating every short-current increase as an immediate fault condition, the fuse's Slo-Blo characteristics provide a delayed response for this type of protection.