Littelfuse IDSR004 - RK5 Time-Delay Fuse 4A 600V (200kA AIC)

Littelfuse IDSR004 is a UL Class RK5 dual-element time-delay fuse designed for overcurrent protection in industrial electrical systems. It features a 600V AC/DC voltage rating and 4A current rating with a 200kA interrupting capacity at 600V, housed in a compact 0.81-inch diameter, single-barrel construction weighing 0.18 lb. The fuse meets UL Standard 248-12 and CSA certifications, combining time-delay performance with visual indication for reliable circuit protection. Typical applications include motor control centers, transformers, and power distribution equipment requiring high fault current protection with selective coordination.

Key Features & Specifications

• Type: UL Class RK5 dual-element time-delay fuse with indication
• Voltage Rating: 600V AC/DC
• Current Rating: 4A
• Dimensions: 0.81" diameter
• Standards: UL 248-12, CSA certified
• Applications: Motor controls, transformers, power distribution
• Class Rating: RK5
• Barrels: 1
• AIC rating: 200kA@600V
• Weight: 0.18 lb
• Certification: UL Listed/CSA

Product Identification

• UPC: 07945801546
• GTIN: 00079458015461