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Bussmann FMM40 Micro Female Maxi Fuse 40 Amp Slow Blow Time Delay Green

Manufacturer

Bussmann

<h3>Trusted Circuit Protection Since the Early 20th Century</h3><p>Bussmann is a division of Eaton that manufactures circuit protection products for the electrical, electronic, and automotive industries, with manufacturing facilities in three domestic and six international locations and approximately 3,000 team members worldwide. With nearly a 100-year history of innovation, the Bussmann division has set the standard for circuit protection in the global market.</p><p>From humble beginnings to becoming a globally recognized name, Bussmann has built its reputation on delivering reliable circuit protection solutions that safeguard electrical systems across countless applications. The brand's commitment to engineering excellence has made it a go-to choice for technicians, fleet managers, and DIY enthusiasts who demand components that protect critical electrical circuits from overload and short-circuit conditions.</p><h3>Comprehensive Electrical Protection Solutions</h3><p>Bussmann's product portfolio spans the full spectrum of circuit protection needs. The brand's <a href="/1987-bussmann-fuse-2676">fuses</a> represent decades of engineering refinement, offering precise overcurrent protection for vehicles ranging from passenger cars to heavy-duty commercial trucks. These fuses are designed to fail predictably and safely when electrical loads exceed safe thresholds, preventing damage to expensive electronic components and wiring harnesses.</p><p>Beyond traditional fuse applications, Bussmann's <a href="/1987-bussmann-circuit-breaker-2504">circuit breakers</a> provide resettable protection for auxiliary circuits and accessory installations. Bussmann have a 90-year history of innovation setting the standard for circuit protection in the global market and the fuses Bussmann manufacture are globally recognised for their reliability and high levels of performance. For commercial vehicle applications, the brand's <a href="/1987-bussmann-roof-marker-light-10052">roof marker lights</a> combine safety compliance with durable construction designed to withstand harsh operating environments.</p><h3>Power Management for Modern Vehicles</h3><p>As vehicles have become increasingly electrified and power-hungry, reliable energy storage has become critical. Bussmann's <a href="/1987-bussmann-vehicle-battery-2476">vehicle batteries</a> reflect the brand's understanding of modern automotive electrical demands, delivering consistent cranking power and reserve capacity. The brand also manufactures specialized components like <a href="/1987-bussmann-automatic-transmission-control-solenoid-7752">automatic transmission control solenoids</a> that demonstrate Bussmann's expansion beyond traditional circuit protection into broader automotive electrical systems.</p><h3>Engineering Excellence Meets Real-World Durability</h3><p>What separates Bussmann from commodity circuit protection products is the brand's focus on engineering for real-world conditions. Products undergo rigorous testing for vibration resistance, temperature cycling, and corrosion exposure—the exact challenges faced in automotive environments. This attention to failure modes and environmental factors ensures Bussmann components perform reliably whether installed in a daily driver or a work truck operating in extreme conditions. The brand's extensive product catalog includes solutions for virtually every circuit protection scenario, from miniature blade fuses for modern fuse panels to heavy-duty breakers for auxiliary power systems.</p>

Part Number

FMM40
05/31/2036 9:45 PM
Sale Price

$4.81

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Bussmann FMM40 is a 40-amp micro female maxi fuse designed with time-delay (slow blow) characteristics to protect electrical circuits in automotive, marine, RV, and powersports applications. This fuse provides reliable overcurrent protection while allowing temporary surge currents during motor startup and other high-inrush loads without nuisance blowing.

Key Features:

  • 40-amp current rating for medium to high-amperage circuit protection
  • Micro female maxi fuse design for compact installation
  • Time-delay (slow blow) element prevents false trips from temporary overloads
  • Green color-coded housing for easy amperage identification
  • Single fuse per package
  • Compatible with standard micro female maxi fuse blocks and holders

This FMM-series fuse is ideal for protecting circuits powering electric motors, lighting systems, audio equipment, and other accessories that experience brief surge currents during normal operation. The color-coded design simplifies circuit management and replacement identification.

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