Bussmann MUSB-T1 Multi Slow-Blow Fuse, 32 Vdc, 100A/125A/325A, Blade End
The Bussmann MUSB-T1 is an Eaton Bussmann series MUSB multi slow-blow fuse engineered for reliable overcurrent protection in low-voltage DC electrical systems. Rated for 32 Vdc with combined current ratings of 100A, 125A, and 325A, this multi-element slow-blow fuse is non-indicating and features blade-end terminals housed in a durable black housing. It delivers dependable circuit protection in applications where multiple current ratings must be managed within a single compact fuse body, helping electricians and equipment designers consolidate several protection levels into one field-replaceable component.
Key Features
- Multi-Rating Design: Combines 100A, 125A, and 325A current ratings in a single multi slow-blow fuse for flexible overcurrent protection.
- Voltage Rating: Rated 32 Vdc, suited for low-voltage DC circuit applications.
- Slow-Blow Response: Multi slow-blow fuse design tolerates momentary current surges while still protecting against sustained overloads.
- Blade End Termination: Blade-end terminals provide a secure, direct mounting connection.
- Non-Indicating Design: Non-indicating construction per manufacturer specification.
- Black Housing: Durable black housing construction.
- Compact Footprint: Measures 2.814 in height x 1.488 in depth x 1.26 in width, weighing just .057 lb for space-conscious installations.
Certifications & Compliance
- RoHS Compliant
Technical Specifications
- Compliances: RoHS Compliant
- Fuse Indicator: Non-indicating
- Packaging Type: Standard
- Product Height: 2.814 in
- Product Length Depth: 1.488 in
- Product Weight: .057 lb
- Product Width: 1.26 in
Typical Applications
- DC Power Distribution Circuits
- Battery and Backup Power Systems
- Industrial and Commercial Electrical Equipment
- Overcurrent and Short-Circuit Protection
Why Bussmann?
Bussmann by Eaton is a trusted name in circuit protection, and the MUSB-T1 multi slow-blow fuse reflects that standard with its RoHS-compliant construction and precise multi-rating design. Combining 100A, 125A, and 325A ratings in one blade-end, non-indicating fuse body simplifies inventory and installation while delivering the dependable overcurrent protection that electrical professionals rely on for critical low-voltage DC circuits. Choosing a Bussmann fuse means specifying a component built to consistent manufacturing standards for predictable, code-compliant performance.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 125A, 100A, 325A
- Compliances:
- RoHS Compliant
- Connection:
- Blade end
- Fuse Indicator:
- Non-indicating
- Packaging Type:
- Standard
- Product Height:
- 2.814 in
- Product Length Depth:
- 1.488 in
- Product Weight:
- .057 lb
- Product Width:
- 1.26 in
- Voltage Rating:
- 32 Vdc
- Department:
- Electrical
- Product Material:
- Black housing
- Product Type:
- Time-Delay Fuse
- Product Group:
- Circuit Protection
- Product Subgroup:
- Fuses
- Product Length:
- 1.488 in
Bussmann MUSB-T1 – Frequently Asked Questions
1) Can I use the Bussmann MUSB-T1 fuse on a 48V battery bank?
No. The MUSB-T1 is rated 32 Vdc, so it belongs on 12V and 24V nominal DC systems. A 48V battery bank exceeds that rating and needs a fuse rated for the higher DC voltage. Using a 32 Vdc fuse above its voltage rating risks the arc not clearing on an interruption.
2) What does 100A/125A/325A mean on one Bussmann MUSB-T1 fuse?
The MUSB-T1 is a multi-element slow-blow fuse: one body carries three separate current ratings, 100A, 125A and 325A, so a single field-replaceable part covers three protection levels instead of three discrete fuses. It is not a fuse you set or select to one value; the elements are built in.
3) How does the Bussmann MUSB-T1 mount, and does it need a fuse holder?
Termination is blade end, so it lands directly on the mating blade connections in the distribution block or fuse base, not in a screw-clamp or bolt-down lug. Confirm your block accepts a blade-terminal fuse of this body size before ordering: the fuse measures 2.814 in height, 1.488 in length/depth and 1.26 in width.
4) Will a slow-blow fuse like the MUSB-T1 nuisance-trip on inverter or motor inrush?
Slow-blow is exactly the reason to pick it. The MUSB-T1 rides through momentary surge current, such as inverter startup or motor inrush, while still opening on a sustained overload. If you need fast clearing to protect semiconductors, a slow-blow element is the wrong choice.
5) Can I tell by looking whether the MUSB-T1 has blown?
No. It is a non-indicating fuse, so there is no pop-up pin or LED flag. Diagnose it with a meter across the fuse or by checking for voltage downstream. If your maintenance crew relies on a visual flag for fast troubleshooting, specify an indicating fuse instead.
6) What part number do I order to replace a Bussmann MUSB series multi fuse?
The manufacturer part number is MUSB-T1, from the Eaton Bussmann MUSB series. Match the existing fuse by that designation, the 32 Vdc rating and the 100A/125A/325A combination, since other MUSB variants carry different amperage groupings.
7) Is the Bussmann MUSB-T1 RoHS compliant for our spec submittal?
Yes, RoHS compliance is stated for the MUSB-T1. That is the compliance item carried on this fuse; the housing is black and the assembly weighs .057 lb.
How fast can I get the Bussmann MUSB-T1 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Can I return it if it doesn’t work for me?
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Does the Bussmann MUSB-T1 come with a warranty?
Absolutely. The Bussmann MUSB-T1 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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