Cooper Bussmann MAX-40 Fast Acting Maxi Blade Fuse 40A

Product Description

The COOPER BUSSMANN MAX-40 is a fast-acting maxi blade automotive fuse rated at 40 amps and 32 volts DC. It uses a zinc element to provide reliable overcurrent protection in high-current automotive and vehicular electrical circuits. At 1.35 inches in length and 1 inch in height, the MAX-40 fits standard maxi blade fuse holders commonly found in under-hood fuse boxes and high-amperage accessory circuits. Installation is straightforward and does not require tools beyond a fuse puller. Automotive electricians and 12-volt accessory installers use this fuse as both an OEM replacement and an upgrade component in custom wiring applications.

The MAX-40 is intended for automotive and light-duty vehicular electrical systems operating at up to 32 volts DC. It is suited for use in maxi blade fuse blocks protecting circuits such as main power feeds, battery cables, high-draw accessories, and trailer wiring harnesses. The orange color coding follows standard maxi fuse convention for quick visual identification during service. This fuse is also cross-referenced as a replacement for the Littlefuse MAX40 and the Ferraz Shawmut AF3-40.

Key Features

• Fast-acting response for immediate overcurrent interruption in automotive circuits
• Maxi blade form factor fits standard high-current automotive fuse holders
• Zinc fuse element for consistent and predictable performance
• Rated 40 amps at 32 volts DC for compatibility with 12V and 24V vehicle systems
• Orange color coding for quick amperage identification during inspection
• RoHS 2002/95/EC compliant

Compatibility

Cross-referenced as a direct replacement for the Littlefuse MAX40 and the Ferraz Shawmut AF3-40. Fits standard maxi blade fuse holders used in automotive and light-duty vehicular electrical systems.

Installation Notes

Always disconnect the vehicle battery or de-energize the affected circuit before replacing a maxi blade fuse. Inspect the fuse holder for corrosion or heat damage before installing the new fuse. Never substitute a fuse with a higher amperage rating than the circuit is designed for, as this can cause wiring damage or fire. Automotive electricians should verify the root cause of any blown fuse before returning the circuit to service.