FLSR045 - 45 Amp Fuse

FLSR045 - 45 Amp Fuse

When your electrical system calls for a 45-amp Class RK5 time-delay fuse, the FLSR045 delivers the protection needed for demanding industrial and commercial applications. This dual-element cartridge fuse is rated for 45A, up to 600VAC and 300VDC, and its time-delay design gives equipment a little breathing room during normal startup. Motors, transformers, and other inductive loads can draw considerably more current for a brief period when they first energize.

Key Features and Benefits

• 45-amp rating: Designed for circuits requiring a 45A overcurrent protection device.
• 600VAC / 300VDC capability: Suitable for a broad range of compatible AC and DC electrical systems.
• Time-delay performance: Helps prevent unnecessary fuse openings caused by normal momentary startup and inrush currents.
• Dual-element design: Protects against sustained overloads and short-circuit conditions.
• Class RK5 construction: A current-limiting fuse design commonly used in industrial electrical equipment.
• Industrial cartridge format: Made for installation with an appropriate fuse block, clip, or holder.
• Non-indicating design: The FLSR045 does not include an integral blown-fuse indicator.
  

Technical Specifications

• Catalog Number: FLSR045
  
• Series: FLSR
  
• Current Rating: 45A
  
• Fuse Class: Class RK5
  
• Fuse Type: Dual Element
  
• Opening Characteristic: Slo-Blo / Time Lag / Time Delay
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 300VDC
  
• AC Interrupting Rating: 200,000A at 600VAC
  
• Additional Listed AC Interrupt Amperage: 300,000A at 600VAC
  
• DC Interrupting Rating: 20,000A at 300VDC
  
• Size / Construction: Industrial Cartridge
  
• Indicating: No
  
• Mounting: Fuse Block / Clip / Holder
  
• PG Holder: LFR60060 Series
  

Material Compliance and Certifications

The FLSR045 is a Class RK5 fuse with dual-element, current-limiting construction. Because certification and material-compliance requirements can vary by application and may be updated over a product's life, any project requiring specific UL, CSA, RoHS, REACH, environmental, or material declarations should have those requirements confirmed against the current documentation for the exact FLSR045 catalog number.

Where It Works Best

The FLSR045 makes the most sense in electrical systems where temporary current surges are normal but sustained overcurrents are not. Motors are a good example. Starting a motor can produce a brief rush of current well above its normal operating level, and a properly selected time-delay fuse is designed with this behavior in mind.

That makes the FLSR045 45A time-delay fuse a good fit for appropriately designed motor circuits, motor control equipment, transformers, industrial machinery, feeders, switchboards, service equipment, and power distribution systems that specify Class RK5 protection.