Eaton KWN-R-1 Fuse - Class RK1, 1 A, Ferrule design
Part Number: KWN-R-1
Quick Summary
Eaton KWN-R-1 fuse is a fast-acting protection device for low-voltage circuits in industrial control panels. This solution addresses nuisance trips and uncertain protection status by delivering predictable clearing in demanding environments. While the data for this model lists Class RK1 construction and a ferrule design, it does not specify common regulatory marks such as SIL, CE, or IP ratings. In practice, it supports compact, reliable protection in automation cabinets, with straightforward replacement and a small footprint that simplifies panel design. For engineers seeking dependable protection with easy procurement and predictable failure behavior, this fuse aligns with standard Bussmann series components and offers tangible uptime and maintenance advantages in everyday plant operations.
Product Information
Extended Description
KWN-R-1 Eaton: Eaton Bussmann series KWN-R fuse, 1 A, Class RK1, Non-indicating, Standard
Product Name
Eaton Bussmann series KWN-R fuse
Catalog Number
KWN-R-1
UPC
051712407502
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.4 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
1 A
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Special features
Ferrule design
KWN-R-1~LIMITRON FAST ACTING FUSE
KWN-R-1~LIMITRON FAST ACTING FUSE
Bussmann series Fuseology
Eaton Specification Sheet - KWN-R-1
Feature: The KWN-R-1 is a 1 A fast-acting fuse designed to clear faults quickly, limiting damage to protect sensitive control circuitry. Business impact: Faster fault clearing reduces downtime and component burn hazards, improving overall line reliability. Application: Ideal for low-voltage control circuits within automation panels where precise protection coordination matters. Feature: Class RK1 construction provides standardized fuse behavior across Bussmann series components, enabling straightforward integration with existing fuse blocks. Business impact: Simplified spares management and proven interchangeability reduce maintenance costs and downtime. Application: Suitable for compact control panels and automation equipment where RK1 fuses are specified. Feature: Ferrule design delivers secure, durable terminations with quick installation. Business impact: Reduces connection failures and supports faster rebuilds after maintenance. Application: Panel-integration for reliable electrical connections. Feature: Non-indicating fuse status reduces visual indicators in crowded panels, encouraging external monitoring practices. Business impact: Encourages proactive diagnostics through panel-level monitoring and data logging. Application: Environments requiring centralized fault visibility. Feature: Compact dimensions (2 in length, 0.56 in width and height) and light weight (0.4 lb) enable space-efficient layouts. Business impact: Maximizes usable panel area and simplifies replacement in tight enclosures. Application: Small footprint protection for automation cabinets and machine controllers. Feature: Standard packaging supports easy procurement and consistent stocking. Business impact: Streamlines procurement cycles and reduces lead times. Application: Inventory management for OEMs and distributors seeking reliable Bussmann sources.
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FAQs
KWN-R-1 measures 2 inches long with a 0.56 inch width and height, weighs 0.4 lb, and uses a ferrule design for secure terminations. It is intended for standard RK1 fuse blocks or Bussmann series enclosures. Ensure correct amperage (1 A), confirm panel space for replacement, and use proper tools while isolating the circuit to avoid shock hazards during installation. Compatibility with existing Bussmann components simplifies stocking and service.
The KWN-R-1 is a 1 A amperage rating, fast-acting fuse built to Class RK1 standards with a non-indicating status. It features a ferrule design for quick connections and a 2 inch length with 0.56 inch width and height, weighing about 0.4 lb. This combination provides rapid fault clearing for sensitive control circuits while maintaining reasonable physical size for panel mounting.
Yes, for many automation applications the 1 A fast-acting KWN-R-1 can protect upstream electronics, coils, and control circuitry within panels. However, motor protection often requires time-delay or higher-current fuses depending on inrush. Coordinate fuse characteristics with upstream overload devices and confirm the panel’s protection coordination and interrupting ratings to ensure proper motor protection strategy.
The provided data lists Class RK1 and general specifications but does not specify SIL, CE, or IP certifications for KWN-R-1. For regulatory compliance, consult Eaton’s datasheets or the supplier to confirm current listings and regional markings. Always verify compatibility with your applicable standards and the equipment being protected to ensure regulatory adherence.
Using a 1 A fast-acting KWN-R-1 reduces damage from faults, lowering unplanned downtime and replacement costs. Non-indicating status requires external monitoring to verify fuse health, so plan for periodic checks and a stocked spare inventory to minimize production delays. Over time, consistent protection and rapid fault clearance contribute to predictable maintenance planning and a favorable return on investment.