Bussmann ACK-250 Time-Delay Stud-Mount Fuse, 250A, 80Vdc

Bussmann ACK-250 Time-Delay Stud-Mount Fuse, 250A, 80Vdc

The Bussmann ACK-250 is a time-delay fuse from the Eaton Bussmann Series ACK line, engineered specifically for lift truck and battery charger circuits where reliable, code-compliant overcurrent protection is critical. Rated 250A at 80 Vdc, this stud-mounted, one-time-use fuse is built to protect demanding industrial DC power systems from sustained overloads while allowing normal motor and charger inrush current to pass without nuisance clearing. The ACK-250's time-delay characteristic is precisely defined: it clears in approximately 100 seconds at 200% of rated current, 35 seconds at 300% of rated current, and 13 seconds at 500% of rated current, giving electricians and equipment technicians a predictable response curve for coordinating circuit protection in material handling and battery-powered vehicle systems.

Key Features

• Amperage Rating: 250A rating sized for lift truck and battery charger DC circuit protection in demanding industrial-duty applications.
• Voltage Rating: 80 Vdc rating matched to common industrial battery and battery charger system voltages.
• Time-Delay Response Curve: Clears in 100 seconds at 200% of rated current, 35 seconds at 300% of rated current, and 13 seconds at 500% of rated current, allowing normal motor and charger inrush while still responding to sustained overload conditions.
• Stud Mounting: Stud-mount terminal design provides a secure, low-resistance mechanical and electrical connection in compatible fuse blocks and fuse holders.
• One-Time Use Fuse: Sacrificial fusible element construction typical of the Bussmann ACK series; the fuse must be replaced after it opens in response to a fault or sustained overload.
• Series ACK Design: Part of the Eaton Bussmann Series ACK fuse family, a product line engineered specifically for lift truck and battery charger overcurrent protection applications.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Lift Truck Electrical Systems
• Battery Charger Circuits
• Industrial Material Handling Equipment
• DC Power Distribution and Overcurrent Protection
• Battery-Powered Industrial Vehicle Service

Why Bussmann?

Bussmann by Eaton is a long-established name in circuit protection, and the Series ACK fuse line is engineered with clearly defined time-delay response points at 200%, 300%, and 500% of rated current so technicians can predict how the fuse will behave under overload conditions. The stud-mount terminal design and 250A, 80 Vdc rating make the ACK-250 a dependable, purpose-built choice for protecting lift truck and battery charger circuits in industrial and material handling environments. As a one-time-use, time-delay fuse, the ACK-250 is intended to be replaced after it clears a fault, ensuring the protected circuit is always guarded by a fuse operating within its original specifications.