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Approvals & Standards

  • UL listed to standard 248-12
  • DC listed to UL standard 248
  • CSA certified to standard C22.2
No. 248.12

Key features & benefits

Solid-state SmartSpot indicator
Time-delay for motor starting and transformer inrush currents without nuisance opening
300kA interrupting rating, self-certified (UL witnessed test)
Extremely current-limiting for low peak let-thru current
Easy 2-to-1 selectivity for prevention of nuisance shut downs and "black outs"
Rejection-style design prevents replacement errors (when used with recommended fuse blocks)
High-visibility orange label gives instant recognition
Reduced inventory by taking the place of Class RK5, K, and H fuses
Metal embossed date and catalog number for easier traceability and lasting identification
Fiberglass body provides dimensional stability in harsh industrial settings
High-grade silica filler ensures fast arc quenching

More specifications


  • Motors
  • Safety switches
  • Transformers
  • Branch circuit protection
  • Disconnects
  • Control panels
  • All general-purpose circuits

Product Specifications

Item Number


Short Description

Fuse Amp-Trap 2000® 600V 300A Time-Delay Class RK1 A6D Series Smart-Spot 600A RD  



Rated voltage AC UL

600   V

Rated voltage DC UL

600   V


50/60   Hz

Ampere Rating

300   A

ROHS Compliant


Fuse Class

Class RK1  


Time Delay  



AC Max I.R./Breaking Capacity: I1

200   kA

Indication System


Indication System Type


Connection/Terminal Material

Tin-Plated Copper  

Connection/Terminal Type


Body/Insulating Material


Product Weight

5.9   lb

Product Diameter

3.12   in

Product Length

13.38   in

Sell Pack Quantity

1   Each

Sell Pack Weight

6.2   lb

Sell Pack Width

3.25   in

Sell Pack Length

13.75   in

Sell Pack Height

3.12   in