Cooper Bussmann KWS-R-90 - RK1 Time-Delay Fuse 90A@600V (200kA AIC)

Cooper Bussmann KWS-R-90 is a LIMITRON RK1 class low-voltage fuse designed for circuit protection in industrial electrical systems. This 600VAC-rated fuse features a 90A current rating and 200kA interrupting capacity at 600V for reliable short-circuit protection. The single-barrel design measures 1.34" in diameter with a robust construction weighing 7 lb, meeting RK1 time-delay characteristics for motor circuit applications. Compliant with industry standards for low-voltage fuses, it provides selective coordination in panelboards, switchboards, and industrial control equipment.

Key Features & Specifications

• Type: Time-delay fuse with RK1 classification, single-element design
• Voltage Rating: 600V AC
• Current Rating: 90A
• Dimensions: 1.34" diameter
• Standards: UL/CSA listed
• Applications: Motor circuits, industrial control panels, switchgear
• Class Rating: RK1
• AIC rating: 200kA@600V
• Barrels: 1
• Weight: 7 lb