Eaton LESRK6.25 Fuse - Class RK1, 300 kAIC, 600 V

Part Number: LESRK6.25
Eaton logo
Manufacturer
Eaton
Part number
LESRK6.25

Quick Summary

Eaton LESRK6.25 fuse provides current-limiting protection for general lighting, heating, and other non-inductive loads. This helps prevent nuisance trips and protects downstream equipment from short-circuit energy. Note the Class RK1 design, 300 kAIC interrupt rating, and a 600 V rating as key selection criteria to ensure safe, code-consistent installations. For engineers evaluating protective devices, this fuse offers a compact, standard form factor with predictable response in general purpose circuits, supporting reliability and ease of procurement across panels and enclosures. In practice, using LESRK6.25 can streamline maintenance planning and reduce total cost of ownership by minimizing unplanned outages while delivering robust circuit protection.

Product Information

Extended Description

LESRK6.25 Eaton: Eaton Edison LESRK fuse, Current-limiting fuse, General purpose applications, Lighting, Heating and other non-inductive loads, 6.25 A, Class RK1, Non-indicating, 300 kAIC, Standard, 600 V
Product Name
Eaton Edison LESRK fuse
Catalog Number
LESRK6.25
UPC
782634548263
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
1.6 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
6.25A
Interrupt rating
300 kAIC
Voltage rating
600 V
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Feature: Current-limiting performance reduces arc energy and peak fault current. Benefit: Enhances equipment protection and personnel safety while lowering the likelihood of collateral damage in faults. Application: Lighting and heating circuits where fast interruption safeguards wiring and drivers. Feature: Class RK1 designation provides a common, widely supported replacement class. Benefit: Simplifies stocking, cross-referencing, and retrofit projects across electrical panels. Application: General distribution panels and control cabinets with standard RK1 fuseholdings. Feature: 6.25 A rating aligned with small to medium non-inductive loads. Benefit: Optimizes protection without nuisance trips for modest power circuits. Application: General purpose circuits in industrial facilities and equipment racks. Feature: 600 V voltage rating and 300 kAIC interrupt rating. Benefit: Ensures safe operation in medium-voltage applications and high-energy fault scenarios. Application: Industrial lighting, climate control, and other non-inductive loads in the 600 V range. Feature: Non-indicating fuse with standard packaging. Benefit: Reduces maintenance complexity by avoiding visual fuse indicators and enabling straightforward replacement. Application: Stocking in maintenance inventories and field service operations. Feature: Dimensions and weight (5 in length, 0.81 in width/height, 1.6 lb). Benefit: Compact footprint supports dense panel layouts and easy handling during installation. Application: Enclosed switchgear and compact control panels where space is at a premium. Additional note: Compatibility with standard Bussmann Edison fuse holders and Eaton catalogs aids procurement and lifecycle management, while the “Standard” packaging type supports efficient stocking and restocking in industrial supply chains.

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FAQs

LESRK6.25 uses the Class RK1 format and standard dimensions (5 in length, 0.81 in width/height) that fit most RK1-compatible holders and enclosure rails. This simplifies sourcing, stocking, and replacement in general protection circuits without custom adapters.
Key specs include a 6.25 A rating, 300 kAIC interrupt capacity, and a 600 V rating. Together, these ensure rapid fault interruption, high energy acceptance for short-circuit events, and safe operation within typical lighting and heating loads.
The fuse is rated for standard industrial protection tasks at 600 V and does not list specific CE, SIL, or IP certifications in the provided data. For harsh environments, verify region-specific approvals with Eaton and consider enclosure protection and installation practices to meet site requirements.
Common applications include general lighting circuits, heating control circuits, and other non-inductive loads where short-circuit protection and rapid interruption reduce damage risk and downtime in industrial facilities.
Use standard RK1 fuse replacements when servicing panels. The non-indicating design simplifies visual checks, while reliance on up-to-date stock ensures correct performance. Always confirm numerical ratings (6.25 A, 300 kAIC, 600 V) match the protected circuit and update inventory with the exact LESRK6.25 catalog number.