Eaton ACK-40 Fuse - Time-Delay DC 130V, Dual Stud
Part Number: ACK-40
Quick Summary
ACK-40 fuse is a time-delay DC protection device for forklift battery charging circuits. In practice, high inrush from chargers can trigger nuisance trips, resulting in unwanted downtime. While the data shows Not Applicable for some compliances, industry practice often aligns DC protection devices with CE and UL safety expectations; verify exact certifications on Eaton's specification sheet for this part. Its compact, stud-mounted design and one-time fuse feature deliver reliable protection with minimal enclosure space, making it well suited for forklift chargers and other high-current DC power circuits while reducing maintenance and replacement costs.
Product Information
Extended Description
ACK-40 Eaton: Eaton Bussmann series ACK fuse, Time-delay stud-mounted fuse, DC circuits protection for fork lift truck and battery chargers, 40 A, Dual, Non-indicating, 100 sec at 200%, 35 sec 300%, 13 sec at 500%, Stud, Standard, 130 Vdc
Product Name
Eaton Bussmann series ACK fuse
Catalog Number
ACK-40
UPC
051712701310
Product Length/Depth
3 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.1 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
40 A
Response time
100 sec at 200%, 35 sec 300%, 13 sec at 500%
Voltage rating
130 Vdc
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 complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - ACK-40
Feature: Time-delay operation with defined overload trip profiles (100 seconds at 200%, 35 seconds at 300%, 13 seconds at 500%). Business Impact: Allows inrush and short surges common in DC motor starts and charger initial current without nuisance outages, improving equipment uptime. Application: Forklift charging circuits and DC motor drives where brief overloads occur. Feature: 40 A, 130 Vdc rating. Business Impact: Provides precise protection for typical forklift battery systems and chargers, preserving wiring insulation and components while avoiding overkill. Application: 24/7 DC charging stations and control circuits in industrial fleets. Feature: Dual elements and time-delay, Non-indicating fuse. Business Impact: Enhanced fault discrimination with robust protection while minimizing visual indicators that can complicate enclosure layouts; reduces maintenance checks. Application: Compact electrical enclosures in forklift bays and battery rooms. Feature: Stud mounting, Standard packaging, One-time fuse. Business Impact: Simplifies installation in existing fuse blocks, lowers mounting hardware costs, and enables straightforward field replacement after a fault. Application: Stocked in service kits for mixed-fleet depots and repair facilities. Feature: Small footprint (3 in length, 0.56 in width/height) and light weight (0.1 lb). Business Impact: Enables dense, organized DC protection layouts in compact charger cabinets and control panels, supporting standard wiring harnesses. Application: Efficent space utilization in vehicle-mounted charger assemblies and battery compartments.
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FAQs
Yes. The ACK-40 is a 40 A, 130 Vdc time-delay fuse with dual elements and stud mounting, designed for DC charging circuits in forklift and industrial battery systems. Its delay profile helps tolerate charger inrush while protecting wiring and components. For best results, verify the exact application voltage and startup characteristics against Eaton’s specification sheet.
ACK-40 uses a stud mounting method and comes in standard packaging. Its compact 3 in length and 0.56 in width/height make it suitable for tight DC protection blocks in forklift charger enclosures. When installing, ensure proper stud terminal engagement and verify clearance for a one-time fuse replacement cycle per maintenance schedules.
The time-delay ratings indicate delayed response under overload: 100 seconds at 200% overload, 35 seconds at 300%, and 13 seconds at 500%. This allows normal startup surges and charging inrush to pass without tripping, while still protecting against sustained faults that could damage wiring or components.
The provided data lists Not Applicable for certain compliance fields. In practice, DC protection devices used in industrial settings often reference CE and UL safety expectations; however, check Eaton’s official specification sheet for exact certifications applicable to ACK-40 and your installation region.
Official resources include the Eaton Bussmann catalog (no. 1007), the Eaton Specification Sheet for ACK-40, and related fuseology videos. For design-in and maintenance, consult the technical datasheet and the manufacturer’s catalog PDFs to confirm electrical ratings, mounting, and replacement procedures.