Eaton BK/ACK-40 Fuse - Time-Delay Stud-Mounted 130 Vdc
Part Number: BK/ACK-40
Quick Summary
BK/ACK-40 fuse protects lift truck circuits and battery chargers with time-delay operation for reliable, continuous power. The main challenge is nuisance trips during inrush or brief overloads that disrupt production. While explicit CE/UL or IP certifications aren’t listed in this data, the BK/ACK-40 is built within Eaton Bussmann’s trusted protection lineup and is designed for high-current industrial applications. With a 40 A rating and a 130 Vdc voltage rating, it delivers robust, plug-and-play protection for mobile industrial equipment while supporting bulk procurement and replacement efficiency. This combination of solid electrical specs and practical packaging helps engineers optimize uptime and maintenance budgets.
Product Information
Extended Description
BK/ACK-40 Eaton: Eaton Bussmann series ACK fuse, Time-delay stud-mounted fuse, Lift truck and battery charger fuse, 40 A, Dual, Non-indicating, 100 sec at 200%, 35 sec at 300%, 13 sec at 500%, Brass terminal, Stud, Bulk, 100, 130 Vdc
Product Name
Eaton Bussmann series ACK fuse
Catalog Number
BK/ACK-40
UPC
051712616584
Product Length/Depth
0.25 in
Product Height
2.5 in
Product Width
0.563 in
Product Weight
0.001 lb
Warranty
Not Applicable
Compliances
Not Applicable
Catalog Notes
Bulk
Amperage Rating
40 A
Response time
100 sec at 200%, 35 sec at 300%, 13 sec at 500%
Voltage rating
130 Vdc
Material
Brass terminal
Number of elements
Dual
Packaging type
Standard Bulk
Fuse indicator
Non-indicating
Mounting method
Stud
Quantity
100
Special features
Silver-plated fuse caps
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - BK/ACK-40
Feature: Time-delay response with defined trip curve (100 seconds at 200%, 35 seconds at 300%, 13 seconds at 500%). Business Impact: Reduces nuisance trips during startup surges without compromising protection, increasing equipment uptime. Application: Lift trucks, battery chargers, and other DC power protection scenarios in warehouses and manufacturing. Feature: Dual elements provide reliable protection in high-current circuits. Business Impact: Enhances fault tolerance and selective isolation to protect critical loads, lowering shutdown risk. Application: High-current automotive and material handling systems. Feature: Brass terminal with stud mounting for secure, vibration-resistant installation. Business Impact: Simplifies retrofits and OEM assemblies, reducing installation time and field faults. Application: Bulk-installed protection in fleet maintenance programs. Feature: 40 A, 130 Vdc rating with non-indicating fuse and silver-plated caps. Business Impact: Meets common industrial protection needs while maintaining low maintenance and corrosion resistance in harsh environments. Application: Battery charging circuits and lift-truck power modules. Feature: Packaging type Bulk (100 units) supports OEMs and service teams with predictable supply and lower unit costs. Business Impact: Streamlines procurement, improves stocking efficiency, and reduces downtime caused by part shortages. Application: Fleet and service operations in manufacturing facilities. Feature: Compatible Bussmann series design enables straightforward replacement and upgrades. Business Impact: Reduces design changes and qualification effort for spare parts, accelerating maintenance cycles. Application: Retrofits and new equipment in industrial settings.
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FAQs
Install the BK/ACK-40 using its stud mounting and brass terminal as specified. Ensure the fuse sits securely in a compatible holder or bussing arrangement and verify clearance for vibration environments typical of lift trucks and chargers. Bulk packaging supports easy stocking and quick field replacements.
The fuse is rated for 40 A with a 130 Vdc maximum voltage. It exhibits a time-delay response: 100 seconds at 200% overload, 35 seconds at 300%, and 13 seconds at 500%, with dual elements and silver-plated fuse caps for improved conductivity.
Yes. The BK/ACK-40 is specifically described as a lift truck and battery charger fuse, designed to protect DC power circuits in industrial vehicle and charging applications while tolerating inrush and surge conditions.
The provided data does not list explicit certifications. For formal compliance, consult Eaton’s datasheet and your local regulations; verify UL, CE, or other applicable marks with the supplier or Eaton’s technical literature before certification submissions.
Bulk packaging (100 pieces per order) reduces procurement touchpoints and stocking complexity, lowering administrative costs and lead times. Combined with reliable time-delay protection, it supports longer maintenance intervals and fewer field failures, improving overall equipment uptime and return on investment.