Bussmann BK/FMM-30 Micro FMX F...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$59.53
$11.69
Bussmann BK/FMM-30 Fuse Holder

Bussmann BK/FMM-30 Micro FMX Fuse, 30A, 32Vdc

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Model: BK/FMM-30
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$59.53
$11.69
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Bussmann BK/FMM-30 Micro FMX Fuse, 30A, 32Vdc

The Bussmann BK/FMM-30 is a Micro FMX fuse engineered for reliable overcurrent protection in low-voltage DC circuits. Rated 30A at 32Vdc, this non-indicating fuse features water-resistant construction and pink color coding for fast, accurate amperage identification during installation or replacement. Supplied in standard packaging with 100 fuses per unit, it is built to deliver dependable, code-compliant circuit protection for automotive, marine, and other low-voltage DC electrical applications where consistent performance under demanding conditions is essential.

Key Features

  • Amperage Rating: 30A for reliable overcurrent protection in low-voltage DC circuits.
  • Voltage Rating: Rated 32Vdc, suited to automotive, marine, and other low-voltage DC electrical systems.
  • Fuse Indicator: Non-indicating design for straightforward inline circuit protection without a blown-fuse indicator.
  • Water-Resistant Construction: Water-resistant material improves durability and performance in wet or otherwise demanding environments.
  • Color-Coded Body: Pink color coding allows quick, accurate visual identification of the fuse's amperage rating.
  • Micro FMX Design: Compact Micro FMX fuse format suited for space-constrained fuse blocks and holders.
  • Packaging: Standard packaging supplied 100 fuses per unit, convenient for stocking and ongoing replacement needs.

Technical Specifications

  • Amperage Rating: 30A
  • Voltage Rating: 32 Vdc
  • Fuse Indicator: Non Indicating
  • Material Type: Water resistant
  • Packaging Type: Standard
  • Special Features: Color code pink
  • Product Type: Micro FMX fuse
  • Item Quantity: 100

Typical Applications

  • Automotive and Marine DC Electrical Circuits
  • Low-Voltage Control Panel Protection
  • Replacement Fuse Stocking for Maintenance and Repair
  • General 32Vdc Circuit Overcurrent Protection
  • Industrial and Commercial DC Equipment

Why Bussmann?

Bussmann fuses are trusted across automotive, marine, and industrial applications for consistent, code-compliant overcurrent protection. The BK/FMM-30's water-resistant construction, pink color coding, and precise 30A/32Vdc rating combine to deliver dependable performance where reliability matters most. Supplied 100 to a package, it makes an efficient choice for shops, fleets, and facilities that need to keep a reliable supply of correctly rated replacement fuses on hand. Choosing Bussmann means specifying a fuse built to protect your circuits and equipment with proven, repeatable performance.

Manufacturer Resources

Product Specs

Amperage Rating:
30A
Fuse Indicator:
Non Indicating
Material Type:
Water resistant
Packaging Type:
Standard
Special Features:
Color code pink
Voltage Rating:
32 Vdc
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Micro FMX fuse
Product Length:
.001 IN
Product Details:
Micro FMX fuse
Item Quantity:
100
Product Height:
.001 IN
Product Weight:
.1 LB
Product Width:
.001 IN

Bussmann BK/FMM-30 – Frequently Asked Questions

1) Will a Bussmann BK/FMM-30 fit a standard Micro FMX fuse block?
The BK/FMM-30 is a Micro FMX format fuse, so it seats in holders and blocks built for the Micro FMX footprint. It is not interchangeable with Mini (ATM), regular ATC/ATO blade, or Micro2 sockets, which use different blade spacing and body sizes. Check the block markings for FMX before ordering.
2) Can I use a 30A 32Vdc Bussmann micro fuse on a 24V or 48V DC system?
Rated 32Vdc, this fuse is fine on 12V and 24V DC circuits, which is what automotive and marine systems run. Do not put it on a 48V DC system or on any AC branch circuit; the voltage rating is the ceiling for safe arc interruption, and 48V nominal exceeds it.
3) Can I put a 30A micro fuse in a circuit that had a 20A in it?
No. The fuse amperage has to match the wire gauge and load the circuit was designed around, not the size that stops nuisance blowing. Dropping a 30A BK/FMM-30 into a slot specified for 20A leaves the conductor unprotected. Replace like for like and find the fault causing the repeat blows.
4) How do I know a pink micro blade fuse is the 30 amp one?
Pink is the color code for 30A in this Bussmann micro line, so techs can read the amperage off the body without pulling it into the light. The BK/FMM-30 is 30A. If you are stocking several values in one drawer, the color coding is what keeps a 15A from going into a 30A circuit.
5) Does the Bussmann BK/FMM-30 have a blown-fuse indicator light?
No. It is a non-indicating fuse, so there is no LED or visual trip flag. You diagnose it by pulling the fuse and inspecting the element, or by checking continuity in the holder. If you want an at-a-glance blown indication on a hard-to-reach panel, you need an indicating version of the fuse instead.
6) Is this micro fuse OK for a wet or outdoor marine location?
The BK/FMM-30 uses water-resistant construction, which is why it gets specified for marine DC panels, trailer wiring, and engine-bay circuits that see spray and humidity. Water-resistant refers to the fuse body itself; the holder or block still has to provide the environmental seal for the connection.
7) How many fuses come in a Bussmann BK/FMM-30 pack?
Standard packaging is 100 fuses per unit, at about .1 lb total listed weight. That quantity suits a fleet shop, marina, or MRO crib building a replacement stock rather than a one-off repair, so plan on buying in bulk for this item.
8) What is the correct replacement part number for a 30A Bussmann micro FMX fuse?
Order Bussmann BK/FMM-30. That is the manufacturer part number for the 30A, 32Vdc Micro FMX fuse in pink. Use the full BK/ prefix when cross-referencing, since the bare FMM number can pull up different packaging configurations.
How fast can I get the Bussmann BK/FMM-30 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann BK/FMM-30 come with a warranty?
Absolutely. The Bussmann BK/FMM-30 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bussmann BK/FMM-30?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bussmann BK/FMM-30 from ZenSupply?
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