Eaton ACK-300 Fuse - DC Time-Delay, Dual 80 Vdc
Part Number: ACK-300
Quick Summary
ACK-300 DC Time-Delay Fuse by Eaton protects forklift traction and battery charging DC circuits with reliable, space-efficient protection. Engineers often battle nuisance trips and limited enclosure space when guarding high-current DC systems, and this dual-element fuse mitigates that by delaying non-harmful surges while quickly interrupting faults. There are no listed CE, UL, or SIL certifications in the provided data, so rely on documented electrical protection performance and Bussmann design practices for industrial environments. The 300 A rating with an 80 Vdc ceiling supports rugged forklift and charger applications, while a copper terminal and stud mounting simplify installation in tight control enclosures. This fuse helps improve uptime and predictable maintenance within a broader electrical protection strategy, reducing total cost of ownership.
Product Information
Extended Description
ACK-300 Eaton: Eaton Bussmann series ACK fuse, Time-delay stud-mounted fuse, DC circuits protection for fork lift truck and battery chargers, 300 A, Dual, Non-indicating, 100 sec at 200%, 35 sec 300%, 13 sec at 500%, Copper terminal, Stud, 80 Vdc
Product Name
Eaton Bussmann series ACK fuse
Catalog Number
ACK-300
UPC
051712701471
EAN
5027590162135
Product Length/Depth
3.87 in
Product Height
1.063 in
Product Width
1.063 in
Product Weight
0.231 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
300 A
Response time
100 sec at 200%, 35 sec 300%, 13 sec at 500%
Voltage rating
80 Vdc
Material
Copper terminal
Number of elements
Dual
Packaging type
Standard
Fuse indicator
Non-indicating
Mounting method
Stud
Special features
One time fuse
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - ACK-300
ACK-300~FUSETRON DUAL ELEMENT
ACK-300~FUSETRON DUAL ELEMENT
Datasheet - FNQ-30
Feature: Time-delay, dual-element architecture delivers selective protection by tolerating short surges, enabling equipment to ride through inrush and motor starting transients. The business impact is reduced nuisance trips, extended fuse life, and lower maintenance costs in demanding DC power paths. This design is ideal for forklift drive circuits and battery-charger interfaces where brief surges occur during normal operation. Feature: High amperage and voltage capability — 300 A at 80 Vdc — ensures robust protection for heavy DC loads without compromising performance. Application gains include predictable operation during charging cycles and load sharing, making it suitable for forklift power modules and charger banks in warehouse settings. Feature: Copper terminal and stud mounting simplify field installation, reduce contact resistance, and enable secure mounting in compact control enclosures. Feature: Non-indicating fuse with standard packaging minimizes false indicators and streamlines integration into existing protection schemes. Feature: Time-current characteristics provide defined protection windows (100 sec at 200%, 35 sec at 300%, 13 sec at 500%), enabling engineers to tailor protection to equipment startup profiles and maintenance windows.
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FAQs
ACK-300 uses stud mounting with a copper terminal, allowing straightforward integration into existing DC bus assemblies and control enclosures. This design reduces wiring complexity, improves contact reliability, and supports secure mechanical mounting in tight spaces common to forklift and charger installations.
The ACK-300 is rated for 300 A with an 80 Vdc maximum. Its time-delay characteristic provides 100 seconds at 200% overload, 35 seconds at 300%, and 13 seconds at 500% overload, delivering selective protection for DC circuits in demanding industrial applications.
Yes. The ACK-300 is designed for DC protection in forklift charging circuits and related batter ycharger interfaces. Its time-delay capability accommodates charging surges and motor-start transients while the 80 Vdc rating and stud mounting support reliable field installation in industrial powertrains.
The provided data indicate the fuse lists as Not Applicable for certain compliance items, and no specific CE/UL/SIL certifications are listed. For compliance-critical deployments, verify with Eaton’s official datasheet and your regional regulatory requirements before approval.
By reducing nuisance trips and enabling stable operation through controlled inrush and surge handling, ACK-300 lowers maintenance intervals and unplanned downtime. Its durable, stud-mounted design simplifies installation and future replacements, supporting longer equipment life and a lower total cost of ownership in high-demand DC systems.