FLNR150 - 150 Amp Fuse

FLNR150 - 150 Amp Fuse

When an electrical system experiences a temporary current surge at startup, you don't necessarily want the fuse to open before the equipment has a chance to start up. The FLNR150 is a 150-amp Class RK5 time-delay fuse made for applications where that distinction matters. Its dual-element Slo-Blo/time-delay design allows normal, short-duration inrush current while still providing overcurrent protection during a fault or sustained overload. The FLNR150 is rated for 250VAC and 125VDC and uses a traditional knife-blade configuration for installation in compatible fuse blocks, clips, and holders.

Key Features and Benefits

• 150-amp rating: Built for electrical applications specified for 150A fuse protection.
• Class RK5 design: Meets the application requirements associated with the RK5 fuse class.
• Time-delay performance: Helps handle brief startup and inrush currents without opening unnecessarily during normal equipment operation.
• Dual-element fuse: Designed to provide time-delay operation along with overcurrent protection.
• AC and DC capability: Rated for applications up to 250VAC or 125VDC when properly applied.
• Knife-blade construction: Fits compatible fuse blocks, clips, and holders.
• Non-indicating: Straightforward fuse construction without an integral blown-fuse indicator.
  

Technical Specifications

• Catalog Number: FLNR150
  
• Series: FLNR
  
• Continuous Current Rating: 150A
  
• Fuse Class: Class RK5
  
• Fuse Style: Dual Element
  
• Opening: Slo-Blo / Time Lag (T) / Time Delay
  
• Maximum AC Voltage: 250VAC
  
• Maximum DC Voltage: 125VDC
  
• Interrupting Rating: 300 kA AC; 20 kA DC
  
• Listed AC Interrupt Amperage: 200,000A at 250VAC
  
• Additional Listed AC Interrupt Amperage: 300,000A at 250VAC
  
• Listed DC Interrupt Amperage: 20,000A at 125VDC
  
• Size / Construction: Knife-Blade
  
• Indicating: No
  
• Mounting: Fuse Block / Clip / Holder
  
• Specified Holder: LFR25200 Series
  

Material Compliance and Certifications

The FLNR150 is a Class RK5 fuse. The supplied product specifications do not provide sufficient information to make specific claims about RoHS, REACH, lead-free status, or other material compliance certifications. If one of those standards is required for your project or facility, the documentation for the exact FLNR150 should be verified before use.

Where It Works Best

The FLNR150 makes sense for commercial and industrial electrical applications requiring 150A Class RK5 time-delay protection. The time-delay characteristic is especially useful around equipment that can draw more current for a short period at startup. That temporary inrush is normal in many electrical applications, so having a fuse designed to accommodate it can be important.

Depending on the requirements of the circuit, the FLNR150 may be suitable for motor circuits, transformers, industrial machinery, control equipment, and electrical distribution systems where its 150A rating, voltage limits, Class RK5 construction, and interrupting capacity meet the system specifications.