Eaton BAF-4 Fuse - 4 A, 250 V CE Marked
Part Number: BAF-4
Quick Summary
The Eaton BAF-4 fuse provides fast-acting protection for small-branch circuits in control panels and automation gear. Engineers often contend with nuisance outages caused by undersized protection or intermittent faults; this device delivers reliable interruption with precise 4 A sizing. CE Marked compliance supports European safety standards, while the product’s high interrupt ratings enable safe operation in typical automation loads; note that SIL and IP ratings aren’t specified for this part. Its compact ferrule-end design simplifies installation in crowded panels, and its Bussmann lineage helps streamline procurement across multiple projects, reducing downtime and inventory complexity for industrial facilities.
Product Information
Extended Description
BAF-4 Eaton: Eaton Bussmann series BAF fuse, Fast acting, 4 A, Non-indicating, Ferrule end x ferrule end, 200 AIC at 250 Vac, 10 kAIC at 125 Vac, Nickel-plated brass endcaps, Standard, 250 V
Product Name
Eaton Bussmann series BAF fuse
Catalog Number
BAF-4
UPC
051712320047
EAN
5027590056847
Product Length/Depth
0.41 in
Product Height
1.5 in
Product Width
0.41 in
Product Weight
0.25 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
4 A
Interrupt rating
10 kAIC at 125 Vac 200 AIC at 250 Vac
Voltage rating
250 V
Material
Nickel-plated brass endcaps
Packaging type
Standard
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Special features
Replacement for "F15B" fuses
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - BAF-4
BAF-4~BUSS MIDGET FUSE
Datasheet - FNQ-30
Feature: Fast-acting design for rapid fault interruption. Business impact: Minimizes arc energy and protects sensitive control electronics, lowering downtime and repair costs in automated lines. Application: Ideal for small-branch circuits in control panels and machine enclosures. Feature: Ferrule end x ferrule end connections provide secure terminations. Business impact: Improves wiring reliability and simplifies replacement in existing Bussmann holders. Application: Compatible with standard ferrule-ready interfaces in automation cabinets. Feature: High interrupt ratings of 10 kAIC at 125 VAC and 200 AIC at 250 VAC. Business impact: Greater safety margin against short circuits in mixed-load environments, reducing system-wide outages. Application: Suitable for automation control circuits and panelboard protection. Feature: Nickel-plated brass endcaps resist corrosion for durable connections. Business impact: Extends fuse life in harsh industrial environments, lowering maintenance costs. Application: Repeated insertions in rugged equipment housings. Feature: Non-indicating fuse design lowers cost and complexity but requires test access. Business impact: Reduces upfront part costs while enabling verified performance via testing and monitoring. Application: Maintenance planning for high-density panels. Feature: Replacement for F15B fuses ensures design compatibility. Business impact: Facilitates migration and procurement consolidation across legacy equipment. Application: Retrofit of older Bussmann-legacy designs in modern automation systems.
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FAQs
Install the BAF-4 using ferrule-ended terminations in a compatible fuse holder designed for Bussmann midget fuses. Ensure the ferrules are properly crimped and seating is level to maintain a secure electrical connection. Verify that the panel space accommodates the 1.5 inch height and 0.41 inch width, and keep the wiring tidy to avoid fixture interference.
BAF-4 provides an interrupt rating of 10 kAIC at 125 VAC and 200 AIC at 250 VAC. This indicates the maximum fault current the fuse can safely interrupt without damage or cascading failure. In practice, select this fuse for small-branch automation circuits where faults are expected to remain within these limits, ensuring panel protection while minimizing collateral damage.
Yes, the BAF-4 is designed as a replacement for F15B fuses in compatible Bussmann Bussmann series applications. When migrating, confirm the size, endcap type, and mounting footprint match your existing holder. The BAF-4 uses ferrule end connections and 4 A rating at 250 V, so verify that these specs align with your original design and procurement ecosystem.
The BAF-4 carries CE Marked compliance, meaning it adheres to European safety standards suitable for many industrial environments. While CE is a key regulatory indicator, there are no other certifications listed in the provided data. For projects requiring additional clearance, verify with Eaton or your regional distributor about UL, IEC, or other applicable certifications.
Because the BAF-4 is non-indicating, fuse status isn’t visible without testing. Implement a maintenance plan that includes periodic electrical testing with a multimeter or appropriate test equipment, particularly after fault events. Maintain an inventory of spare BAF-4 units and ensure fault logs capture fuse replacements to support reliability metrics and uptime goals.