Littelfuse FLSR600 Class RK5 Fuse – 600A – 600V Time-Delay Fuse

The Littelfuse FLSR600 is a 600 Amp Class RK5 dual-element time-delay fuse designed for industrial and commercial electrical distribution systems. Part of the FLSR series, this knife-blade fuse provides reliable overload and short-circuit protection for motors, transformers, feeders, and other power distribution equipment. Its dual-element construction allows temporary motor starting and transformer inrush currents to pass without nuisance opening while maintaining dependable fault interruption performance.

Electrical Rating

• Current Rating: 600 Amps
• Maximum AC Voltage: 600 VAC
• Maximum DC Voltage: 300 VDC
• Interrupting Rating:
  • 200 kA AC
  • 20 kA DC @ 300 VDC

Key Specifications

• Manufacturer: Littelfuse
• Catalog Number: FLSR600
• Series: FLSR
• Fuse Class: RK5
• Construction Type: Knife-Blade
• Fuse Type: Dual Element Time-Delay
• Indicating: No

Protection Characteristics

• Time-delay (slow-blow) operation
• Dual-element fuse construction
• Provides overload and short-circuit protection
• Accommodates temporary motor starting and transformer inrush currents
• High interrupting capacity for industrial power distribution systems

Construction Features

• Knife-blade terminal design
• Non-indicating fuse configuration
• Industrial-duty construction for demanding applications
• Designed for reliable long-term service

Mounting & Compatibility

• Mounting Method: Fuse Block / Clip / Holder
• Compatible with standard Class RK5 fuse holders and fuse blocks
• Suitable for switchboards, panelboards, motor control centers, and industrial distribution equipment

Applications

• Motor branch circuit protection
• Transformer protection
• Industrial machinery and equipment
• Commercial electrical distribution systems
• Feeder and branch circuit protection

Product Data

• Manufacturer: Littelfuse
• Catalog Number: FLSR600
• Product Type: Time-Delay Fuse
• Series: FLSR
• Fuse Class: RK5

Returns are easy

You may return items within 30 days of delivery for a refund.

FREE Shipping on orders over $149.

My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

Same Day Shipping

We strive to ship out your items within one business day.

In rare circumstances, My Circuit Breakers may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.