FLSR150 - 150Amp Fuse

FLSR150 - 150Amp Fuse

Need a 150A Class RK5 fuse that can handle normal short-duration current surges without opening too quickly? The FLSR150 is a 600V AC, 300V DC dual-element time-delay fuse with a knife-blade configuration for compatible fuse blocks, clips, and holders. It is a non-indicating fuse, so when you're replacing an existing FLSR150, it's worth checking the complete specification—not just the 150A rating—to make sure the voltage, fuse class, time-delay characteristics, physical configuration, and interrupting capacity all match the application.

Key Features and Benefits

• 150A continuous current rating – Built for circuits and equipment requiring a 150-amp Class RK5 fuse.
• 600 V AC rating – Suitable for compatible AC systems rated up to 600 V.
• Rated up to 300V DC – Can also be used in appropriately specified DC applications.
• Slo-Blo time-delay operation – Helps the fuse tolerate acceptable short-duration current surges rather than opening immediately.
• Dual-element construction – Provides the operating characteristics expected from this Class RK5 time-delay fuse family.
• Class RK5 fuse – An important specification when matching a replacement fuse to existing equipment.
• Knife-blade configuration – Fits compatible fuse blocks, clips, and holders intended for this fuse size and class.
  

Technical Specifications

• Catalog Number: FLSR150
  
• Series: FLSR
  
• Product Type: Dual-Element Fuse
  
• Fuse Class: Class RK5
  
• Continuous Current Rating: 150A
  
• Maximum AC Voltage: 600V AC
  
• Maximum DC Voltage: 300V DC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Physical Style: Knife-Blade
  
• Indicating: No
  
• DC Interrupting Rating: 20 kA at 300V DC
  
• Manufacturer-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 supplied product information identifies the FLSR150 as a Class RK5 fuse. Specific UL, CSA, RoHS, or other certification and material compliance details were not included in the information provided for this specific catalog number. Rather than assume a certification that may not apply, confirm any required compliance or certification against the current manufacturer documentation before using the fuse in an application where a particular listing is required.

Where It Works Best

The FLSR150 is a practical fit for electrical equipment that specifically requires a 150A, 600V Class RK5 time-delay fuse. Its time-delay characteristic becomes especially useful where brief inrush or startup current is a normal part of operation. Instead of responding instantly to every temporary rise in current, the fuse is engineered with the specified Slo-Blo/time-lag behavior.