FLSR125-ID - 125Amp Fuse

FLSR125-ID - 125Amp Fuse

When you need a 125A Class RK5 fuse, getting the details right matters. The FLSR125-ID combines a 125-amp rating, 600V AC capacity, time-delay operation, and an indicating design in a knife-blade fuse made for compatible electrical systems. And when maintenance time comes around, the indicating feature provides a practical benefit by making it easier to identify fuse status. With ratings up to 600V AC and 300V DC, the FLSR125-ID is a solid choice when the equipment specifically calls for a 125A Class RK5 time-delay indicating fuse.

Key Features and Benefits

• 125A continuous current rating: A straightforward match for equipment and circuits specified for 125-amp fuse protection.
• Rated up to 600V AC: Suitable for compatible higher-voltage AC electrical applications.
• 300V DC capability: Provides an additional option for appropriately rated DC applications.
• Time-delay performance: The Slo-Blo/time-lag characteristic helps handle normal temporary current surges without opening prematurely.
• Dual-element fuse design: Combines time-delay operation with overcurrent protection.
• Built-in indication: Makes checking the fuse status more convenient during troubleshooting or routine maintenance.
• Class RK5 configuration: Helps ensure the correct fuse class is used when replacing a fuse in compatible equipment.
• Knife-blade construction: Made for installation in compatible fuse blocks, clips, and holders.
  

Technical Specifications

• Catalog Number: FLSR125-ID
  
• Manufacturer Catalog Reference: FLSR125ID
  
• Series: FLSR_ID
  
• Fuse Type: Dual-Element Time-Delay Fuse
  
• Fuse Class: Class RK5
  
• Continuous Current Rating: 125A
  
• 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 kA at 300V DC
  
• Listed AC Interrupt Amperage: 200,000A / 300,000A at 600V AC*
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Listed Holder Family: LFR60200 Series
  

Material Compliance and Certifications

The available specifications identify the FLSR125-ID as a Class RK5 fuse. Specific certification listings and material-compliance declarations are not provided in the supplied product information, so they should not be assumed. If your application requires confirmation of UL, CSA, RoHS, or another particular standard, check the current documentation for the exact FLSR125ID catalog number.

Where It Works Best

The FLSR125-ID makes sense in compatible electrical systems that specifically require a 125A, 600V AC Class RK5 time-delay fuse. It's particularly useful where normal equipment operation can produce brief current surges. The time-delay characteristic allows the fuse to ride through appropriate short-duration inrush conditions rather than opening simply because the current temporarily rises above its normal level.

There's also a maintenance advantage. Because this is an indicating fuse, technicians have a more convenient way to determine fuse status when inspecting equipment or tracking down an electrical problem. That can be especially useful in installations containing multiple fuses where troubleshooting efficiency matters.