Eaton ECSR125 - RK5 Fuse 125A (200kA@600V Interrupt Rating)

Eaton ECSR125 is a low-voltage current-limiting fuse designed for circuit protection in industrial electrical systems. This RK5-class fuse operates at 600V AC with a 125A current rating, featuring a compact 5-inch (127mm) length and 0.81-inch (20.6mm) square body construction with a 1.61-inch (40.9mm) diameter. The single-barrel design meets UL/CSA standards and delivers 200kA interrupting capacity at rated voltage for reliable short-circuit protection. Typical applications include motor control centers, switchgear, and industrial power distribution panels where high-fault current protection is critical.

Key Features & Specifications

• Type: Current-limiting RK5 class fuse with time-delay characteristics
• Voltage Rating: 600V AC
• Current Rating: 125A
• Dimensions: 5"L x 0.81"W x 0.81"H (127mm x 20.6mm x 20.6mm)
• Weight: 1 lb (0.45kg)
• Diameter: 1.61" (40.9mm)
• Standards: UL/CSA listed
• Applications: Industrial power distribution, motor protection, switchgear
• Class Rating: RK5
• Barrels: 1
• AIC rating: 200kA@600V

Product Identification

• UPC: 782634508458
• GTIN: 00782634508458