Whether you&#8217;re seeking advice, clarification, or insight on a particular topic, our experts are here to help. So, what&#8217;s on your mind? Ask away!

Got a question? Ask your OptiFuse engineer

span

Useful Links

1675 Pioneer Way, Suite CEl Cajon, CA 92020 USA

sales@optifuse.com

1-619-593-5050

OptiFuse

Ask the Expert: OptiFuse Blog

Blog

Get expert advice on fuses, circuit breakers, and electrical safety trends with the OptiFuse blog. Stay informed on the latest in circuit protection and components.

Blog | OptiFuse

Home

Optifuse

If your circuit has a harmless inrush: motor start, transformer magnetizing current, capacitor charging, or an alternator kick: fast-acting fuses can become a nuisance. OptiFuse <a href="https://www.optifuse.com/fuses/electronic-glass-ceramic-fuses-39/257/">TSC</a> is a 5x20 mm time-lag (slow-blow) glass fuse designed to ride through brief surges and open only when an overcurrent actually persists.

TSC is a 20mm long x 5mm diameter glass cartridge fuse, offered with (TSC-P) or without (TSC) axial leads, and UL listed.
Time-lag behavior is the entire value proposition: it helps prevent nuisance openings in circuits that legitimately draw a short inrush above steady-state current.

<ul>
<li>Size: 5x20mm (ULxCSA)</li>
<li>Characteristic: Time lag (slow-blow)</li>
<li>Voltage rating: 250VAC</li>
<li>Current range: 100mA to 15A</li>
<li>Interrupt rating: 200A AC</li>
<li>Visual inspection: clear glass body supports quick filament checks</li>
<li>Bonus (packaging): Select items available in blister packs.</li>
</ul>

In practice, it’s a strong fit for:
<ul>
<li>Small motors/fans/pumps</li>
<li>Transformers and power supplies</li>
<li>Cap-input loads (brief charging surge)</li>
<li>Industrial control and general electronics needing serviceable 5x20mm protection</li>
</ul>

A good fuse choice can still fail in the field if the mounting method is sloppy. With 5x20mm fuses, you generally have two clean paths: in-line holders for harness installs, or board-mount / solderable solutions for electronics.
 
In-line holders for harness installs
OptiFuse offers compatible 5x20mm in-line holders when you want the fuse in the wiring harness:
<ul>
<li><a href="https://www.optifuse.com/fuse-holders-blocks-and-accessories/electronic-glass-ceramic-fuses-14/in-line-fuse-holder-15/89/">LPC-02</a> (10A, 500VAC / 32VDC)</li>
<li><a href="https://www.optifuse.com/fuse-holders-blocks-and-accessories/electronic-glass-ceramic-fuses-14/in-line-fuse-holder-15/90/">LPC-08</a> (10A, 32VDC)</li>
<li><a href="https://www.optifuse.com/fuse-holders-blocks-and-accessories/electronic-glass-ceramic-fuses-14/in-line-fuse-holder-15/92/">LPC-24</a> &#8211; UL certified (30A, 250VAC / 32VDC)</li>
</ul>
These are the go-to when you want the fuse accessible without opening the enclosure or when protection needs to be placed close to the source.
 
Solderable / PCB-friendly mounting
If you need a fuse on a PCB, there are two common approaches:
<ul>
<li>Use the leaded version (TSC-P)</li>
</ul>
The axial leads let you solder the fuse directly into the circuit, which is simple and compact. This is often used in cost-sensitive designs or where service access isn’t critical.
<ul>
<li>Use a PCB-capable fuse holder to keep it replaceable</li>
</ul>
Direct-solder fuses work, but they aren’t fun to replace. For a more robust, serviceable design, use a PCB/panel fuse holder so the fuse can be swapped without rework. A holder like <a href="https://www.optifuse.com/fuse-holders-blocks-and-accessories/electronic-glass-ceramic-fuses-14/fuse-clip-19/153/">CSC-05</a> keeps the circuit serviceable while still letting you solder the holder leads/pins to the board.

If you need a different time-current behavior or body material, OptiFuse offers additional tube fuse counterparts:
<ul>
<li><a href="https://www.optifuse.com/fuses/electronic-glass-ceramic-fuses-39/258/">TCC</a> (ceramic, time lag)</li>
<li><a href="https://www.optifuse.com/fuses/electronic-glass-ceramic-fuses-39/256/">MSC</a>  (glass, medium time lag)</li>
<li><a href="https://www.optifuse.com/fuses/electronic-glass-ceramic-fuses-39/254/">FSC</a> (glass, fast acting)</li>
</ul>
For more information, read our <a href="https://www.optifuse.com/blog/choose-a-tube-fuse/">How to Choose a Tube Fuse</a> blog.
For more inquiries, contact OptiFuse at <a href="mailto:sales@optifuse.com">sales@optifuse.com</a> and <a href="https://www.optifuse.com/blog/optifuse-fuse-selection-guide/">see our Fuse Selection Guide for complete context</a>.

Discover more 

<a title="Original URL:
https://www.optifuse.com/sebastian-castaneda-optifuse-profile/

Click to follow link." href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.optifuse.com%2Fsebastian-castaneda-optifuse-profile%2F&amp;data=05%7C02%7Craniahc%40triadcomponentsgroup.com%7Cba4e1817de2442d45b0108de581a194c%7C4e4d40c7a6d94d2aa01f5c29a5888588%7C0%7C0%7C639045066773787451%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&amp;sdata=%2FNcWZzVi1NVAQA6q3nXS%2FHx0HIdg4xkZw1w3Op%2FsecY%3D&amp;reserved=0" data-outlook-id="2169bcb2-fb9b-4fd1-9c49-5a04847fe53c">Sebastian Castañeda</a> is a circuit protection specialist and technical writer with application-focused experience in technical support and custom protection design. He contributes practical, application-driven insights to the OptiFuse Blog.

Built for Inrush: The TSC 5x20mm Time-Lag Glass Fuse

OptiFuse TSC / TSC-P is a 5x20mm time-lag glass tube fuse rated 250VAC with a 200A interrupt rating. Built to tolerate inrush from motors, transformers, and power supplies; available with or without leads.

TSC 5x20mm Time-Lag Glass Fuse: 250VAC, 100mA-15A (UL/CSA)

https://cms.optifuse.com/uploads/2026/03/TSC-P-5x20mm-Time-Lag-Glass-Tube-Fuse-01-scaled.jpg

https://www.optifuse.com//avatar/37465ca0211ae8a73d49655e93db6660?s=96&d=mm&r=g

Oihane Fernandez de Retana

48V systems are increasingly common across applications such as EV accessories, mild-hybrid vehicles, telecom equipment, and e-mobility solutions. This often raises a seemingly straightforward question: My fuse block is rated 30A at 32V. If I only run 20A, can I use it on a 48V system? On the surface, the calculation might appear reasonable:P = I x V<ul><li>30A x 32V = 960W</li><li>20A x 48V = 960W</li></ul> Same watts, so it should be fine, right?Usually, no. A fuse block isn’t rated in “watts.” Its current rating and voltage rating are protecting you from different problems.

Current Rating and Voltage Rating Are Not Interchangeable 

A fuse block’s amp rating is mainly a thermal limit. It’s based on how hot the terminals, bus bars, and housing get during continuous current. That rating depends heavily on the conditions the product was tested under.
<ul>
<li>What was the size of the wire feeding the power into the block?</li>
<li>How was the fuse block mounted?</li>
<li>Is the block able to be cooled by airflow?</li>
<li>What was the ambient temperature during the test?</li>
<li>What does the enclosure look like, if any?</li>
</ul>
 
Standards are essential because a “30A” rating is not always evaluated identically across product categories:
<ul>
<li>UL 4248 (Fuseholders) commonly uses temperature-rise limits at rated current under defined test conditions.</li>
<li>IEC 60127-6 (Miniature fuse holders) commonly looks at allowable power dissipation (heat lost in watts) to define current capability. Although we’re not looking at miniature fuse holders, the standard guidelines are very much relevant to this discussion.</li>
</ul>
 
That’s why two fuseholders that can look similar can behave very differently once you put them in a real enclosure with real wiring.

The voltage rating addresses fault conditions, not normal operation. It ensures the fuse block can safely interrupt a fault at the rated voltage, accounting for factors such as:
<ul>
<li>Clearance and creepage (spacing through air and across surfaces)</li>
<li>Dielectric withstand</li>
<li>Arc resistance / tracking behavior of plastics</li>
<li>What happens around the fuse when the fuse opens under a fault</li>
</ul>
 
Exceeding the rated voltage, particularly in DC systems, increases the risk of sustained arcing or carbon tracking, which can compromise both safety and reliability.

Key Takeaway: Reducing current does not allow you to bypass a fuse block’s voltage rating. Lower current helps with heat, but it doesn’t guarantee safe interruption at a higher DC voltage.

AC has a built-in advantage: the waveform crosses zero repeatedly, which helps arcs extinguish naturally. DC circuits lack this zero-crossing, so once an arc forms, it can persist longer. This places greater demands on the fuse holder or block design, including: spacing, materials, and arc management.
So while 48V doesn’t feel “high voltage,” it can still be high enough to produce dangerous failure modes during interruption events. This is especially true for compact automotive-style blocks that were originally designed around 12V/24V ecosystems. See our <a href="https://www.optifuse.com/blog/ac-vs-dc-arc-quenching/">AC vs DC voltage </a>blog for more information.

Why 48V Is a Different  Animal Than 32V (Especially in DC) 

When designing circuits on a 48V rail, the safest approach is to select a fuse block or holder rated for 48V DC systems. Components with 58VDC, 60VDC, or 80VDC voltage ratings are typically recommended, depending on the product family. Using a fuse block rated above your system voltage ensures safe fault interruption, arc management, and insulation protection under real-world conditions.
OptiFuse offers several solutions specifically designed for higher-voltage DC applications, including multi-circuit blade fuse blocks that are ideal for 48V accessory distribution panels. These blocks allow engineers to stay within the familiar ATO/ATC blade fuse ecosystem while safely handling higher-voltage DC systems.

Practical takeaway

For a 48V rail, always pair your fuse block with higher-voltage ATO/ATC blade fuses, not standard 32V parts. OptiFuse offers options specifically designed for higher-voltage DC systems:
<ul>
<li><a href="https://www.optifuse.com/fuses/automotive-blade-fuses-35/204/">ANR58-UL</a> (58VDC, UL Recognized): a standard blade fuse designed for higher-voltage vehicle architectures</li>
</ul>
<ul>
<li><a href="https://www.optifuse.com/fuses/automotive-blade-fuses-35/206/">ANR80-UL</a> (80VDC, UL Recognized): same familiar ATO/ATC style, but rated 80VDC and built for modern 36–48V platforms</li>
</ul>
 
For more inquiries, contact OptiFuse at <a href="mailto:sales@optifuse.com">sales@optifuse.com </a>or consult our <a href="https://www.optifuse.com/blog/optifuse-fuse-selection-guide/">Fuse Selection Guide for complete context</a>.

What it pairs with (this matters):

Can a 30A 32V Fuse Block Handle 20A 48V? Understanding Fuse Block Ratings

Can a 30A 32V fuse block run 20A at 48V? Learn why voltage and current ratings aren’t interchangeable, what UL/IEC tests imply, and which OptiFuse 58V/80V options pair with ANR58-UL/ANR80-UL fuses.

Can a 32V Fuse Block Be Used on 48V? Fuse Block Ratings Explained

https://cms.optifuse.com/uploads/2026/03/32V-vs-80V-Fuse-Block-Ratings-for-48V-Systems-01-scaled_1-01-scaled.jpg

In the real world, the current rating (amps) is only half the story. When voltage increases the fuse has a harder job interrupting a fault without sustaining an arc. That’s why the voltage rating isn’t simply a “nice-to-have” on higher-voltage platforms, it’s part of what makes the protection system work when something actually fails.OptiFuse <a href="https://www.optifuse.com/fuses/automotive-blade-fuses-35/498/">ANR250-UL</a> is built for exactly that gap: a familiar ATO/ATC (regular blade) footprint, but rated for 80VDC and 250VAC, with interruption ratings that address real fault events.

Most people think of ATO/ATC blade fuses as only 12V/24V automotive parts. ANR250-UL keeps the same serviceable blade format, but targets advanced electrical architectures, including systems that have higher voltage DC rails.

<ul>
<li>Voltage: 80VDC / 250VAC</li>
<li>Breaking capacity: 1,000A @ 58VDC, 1,000 @ 80VDC, 400A @ 250VAC</li>
<li>Amp range from 500mA through 40A</li>
<li>Standards available: SAE J1284, SAE J2576, ISO 8820-3</li>
</ul>

OptiFuse’s ANR250-UL is the highest-voltage automotive blade fuse available in the market, delivering 250VAC / 80VDC performance in a familiar ATO/ATC footprint.

In EV and hybrid platforms, the strongest fit for the ANR250-UL is not the main traction bus, but the sub-80V auxiliary layer: especially 48V mild-hybrid and electrified support circuits. 
 As vehicle architectures add more 48V loads, designers may still want a compact, serviceable blade fuse format for branch protection where traditional 32V blade fuses are no longer the right voltage class. Typical examples include: 
<ul>
<li aria-setsize="-1" data-leveltext="-" data-font="Times New Roman" data-listid="11" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;-&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" data-aria-posinset="1" data-aria-level="1">Electric coolant pumps </li>
</ul>
<ul>
<li aria-setsize="-1" data-leveltext="-" data-font="Times New Roman" data-listid="11" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;-&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" data-aria-posinset="2" data-aria-level="1">Electric oil pumps </li>
</ul>
<ul>
<li aria-setsize="-1" data-leveltext="-" data-font="Times New Roman" data-listid="11" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;-&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" data-aria-posinset="3" data-aria-level="1">Electric vacuum pumps </li>
</ul>
<ul>
<li aria-setsize="-1" data-leveltext="-" data-font="Times New Roman" data-listid="11" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;-&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" data-aria-posinset="4" data-aria-level="1">Radiator/condenser fan branches, and other 48V auxiliary motor or actuator circuits </li>
</ul>

<ul>
<li>Onboard chargers / auxiliary power modules that include AC sections needing compact, replaceable overcurrent protection.</li>
</ul>
<ul>
<li>Vehicle HVAC subsystems and other onboard equipment where AC power exists upstream of conversion stages.</li>
</ul>
<ul>
<li>48V+ accessory distribution where the team wants to stay in a standard ATO/ATC service format, but the platform voltage exceeds “traditional” blade fuse ratings.</li>
</ul>
<ul>
<li>Telecom / industrial DC loads where technicians prefer a quick visual ID + easy replacement (color coding stays standard across the blade family).</li>
</ul>

For PCB-mounted or compact equipment designs, the <a href="https://www.optifuse.com/fuse-holders-blocks-and-accessories/automotive-blade-fuses-4/fuse-clip-9/79/">CNU-03</a> is a strong companion product to the ANR250-UL. It gives engineers a way to mount a regular blade fuse into a board-level or compact assembly while keeping the fuse replaceable and easy to service.  
It’s important to note that the CNU-03 is rated for up to 30A while the ANR250-UL series offers amperages up to 40A.

A higher-voltage fuse only does its job if the rest of the hardware matches the application:
<ul>
<li>Verify maximum system voltage (not just “48V nominal”)</li>
</ul>
<ul>
<li>Use a holder/fuse block rated for the same voltage class</li>
</ul>
<ul>
<li>Confirm the fuse’s interrupting rating is appropriate for the available fault current at that point in the system</li>
</ul>
For multi-circuit distribution in the ATO/ATC ecosystem, OptiFuse’s <a href="https://www.optifuse.com/fuse-holders-blocks-and-accessories/automotive-blade-fuses-4/fuse-block-8/479/">BLR-1212-G </a>(80VDC) is one example of a fuse block designed for higher-voltage vehicle architectures, and it pairs naturally with higher-voltage blade fuses like the ANR series.
For more inquiries, contact OptiFuse at <a href="mailto:sales@optifuse.com">sales@optifuse.com</a>. <a href="https://www.optifuse.com/blog/optifuse-fuse-selection-guide/">See our Fuse Selection Guide for complete context</a>

ANR250-UL: A High-Voltage ATO/ATC Blade Fuse for 250VAC / 80VDC Systems

OptiFuse ANR250-UL is a high-voltage ATO/ATC (Regular) blade fuse rated 250VAC and 80VDC for advanced vehicle and onboard equipment protection where higher-voltage interruption matters.

ANR250-UL High-Voltage ATO/ATC Blade Fuse: 250VAC / 80VDC

https://cms.optifuse.com/uploads/2026/03/ANR250-UL-High-Voltage-ATO-ATC-Blade-Fuse-scaled.jpg

Glass and ceramic fuses both protect circuits the same way: the internal element melts during an overcurrent and opens the circuit. The real difference is what happens in the split-second after the element opens, especially during short-circuit faults (high current, high energy), where arcing and fault containment become the whole game.OptiFuse carries both styles across <a href="https://www.optifuse.com/fuses/electronic-glass-ceramic-fuses-39/">common tube-fuse</a> sizes (3.6×10mm, 5×15mm, 5×20mm, 6.3×32mm, and more).Choose a glass fuse when fault current is low/moderate and you want easy visual inspection (clear body). Choose a ceramic fuse when you might see higher fault current / higher energy and you need better arc-quenching and higher breaking capacity.

<h2>Glass vs. Ceramic Fuse Comparison</h2>

<h2>Ceramic Fuses and Interrupt Rating</h2>
 
Ceramic construction is mechanically stronger and typically uses sand filling to quench arcing and raise interrupt capability.
The key specification that determines this performance is the fuse interrupt rating (breaking capacity) — a rating many people overlook until something fails violently.
Interrupt rating (breaking capacity) is the maximum fault current a fuse can safely clear at its rated voltage. It is not the same thing as the fuse’s amp rating. See our <a href="https://www.optifuse.com/blog/choose-a-tube-fuse/">tube-fuse selection guide</a> for more core electrical ratings to verify.
 
<h3>Why it matters</h3>
When a fuse opens under a high-energy fault, an arc can form across the melted gap. If the fuse can’t quench that arc, it may not clear cleanly. This can create overheating, damage, or (worst case) rupture.
 
<h3>A concrete OptiFuse example (same size, very different outcomes) </h3>
A lot of designers assume “5x20mm is 5x20mm.” The form factor between two fuse types can be the exact same, but electrically, their ratings can differ substantially.
<ul>
<li><a href="https://www.optifuse.com/fuses/electronic-glass-ceramic-fuses-39/250/">FSD</a> (glass, fast-acting, 5×20mm):</li>
</ul>
Interrupting rating listed as 35A or 10×In at 250VAC (whichever is larger).
<ul>
<li><a href="https://www.optifuse.com/optifuse_ecommerce_tools/datasheets/FCD.pdf">FCD </a>(ceramic, fast-acting, 5×20mm):</li>
</ul>
Interrupting rating listed as 1500A @ 250VAC (and additional higher ratings shown for specific conditions/models).
See our <a href="https://www.optifuse.com/blog/fcd-fuse-applications/">FCD Fuse for Delicate Electronics blog </a>for more information.

<h2>What’s physically different inside?</h2>

<h2 class="p2">Substitution rule of thumb</h2>

OptiFuse’s <a href="https://www.optifuse.com/blog/choose-a-tube-fuse/">How to Choose a Tube Fuse</a> guidance emphasizes checking nominal current, voltage, and interrupt rating (and in pulse-heavy cases, I²t). <a href="https://www.optifuse.com/blog/optifuse-fuse-selection-guide/">See our Fuse Selection Guide for complete context</a>.

Glass vs. Ceramic Fuses: Key Differences, Interrupt Ratings, and When to Use Each

Glass vs ceramic tube fuses: learn how body material affects arc-quenching and interrupt rating, plus when it’s safe to substitute.

Glass vs Ceramic Fuses: Differences, Interrupt Ratings & Selection

https://cms.optifuse.com/uploads/2026/02/FSD-FCD-01-scaled.jpg

High-current accessory and auxiliary circuits can get expensive fast when something goes wrong. Winches, compressors, inverters, lift gates, and battery feeds all need protection that can survive vibration, moisture, and real-world wiring.The OptiFuse <a href="https://www.optifuse.com/circuit-breakers/high-amperage-heavy-duty-circuit-breakers-44/303/">351 Series</a> is a heavy-duty, waterproof high-amperage circuit breaker commonly used in RVs, marine craft, emergency vehicles, and heavy-duty trucks. It is often installed close to the battery as a primary source of power protection, and the elongated body makes it easier to land heavy-duty lugs.

<ul>
<li class="p2">Current range: 25A to 300A</li>
<li class="p2">Reset type: Type I (automatic reset)</li>
<li class="p2">Ingress rating: IP67 sealed construction</li>
<li class="p2">Terminations: 3/8-16 stud terminals for ring lugs</li>
</ul>

Up to 48VDC, with interrupt ratings listed on the datasheet (including 3000A @ 30VDC and 1500A @ 48VDC).

<ul>
<li class="p2">Auto reset is useful when the breaker is not easy to reach, since it resets after cooling once the fault clears.</li>
<li class="p2">Sealed housing helps in wet, dusty, and splash-prone installs.</li>
<li>The published interrupt rating is positioned to meet ABYC requirements for certain battery main protection scenarios.</li>
</ul>

The 351 is commonly used for high-current DC branches and battery-adjacent protection such as:
<ul>
<li>RV and marine battery feeds / auxiliary distribution</li>
<li>Winches, compressors, hydraulic pump motors, lift gates</li>
<li>DC inverters and high-current accessory distribution</li>
<li>Emergency / fleet vehicle add-ons where sealing + durability matter</li>
</ul>

A few practical details help keep high-amp installs reliable:
<ul>
<li>Mount close to the source (often near the battery) to minimize the length of unprotected cable.</li>
<li>Use properly sized ring lugs on the 3/8”-16 studs, and torque within the manufacturer guidance (stud torque and mounting torque are called out on our 351 <a href="https://www.optifuse.com/optifuse_ecommerce_tools/datasheets/351.pdf">datasheet</a>).</li>
<li>Provide strain relief so the cable weight/vibration isn’t loading the studs.</li>
<li>Route and protect the cable against chafe (loom/grommets) and keep it away from high-heat sources.</li>
</ul>

Need help selecting the right protection for your circuit? <a href="https://www.optifuse.com/blog/optifuse-fuse-selection-guide/">See our Fuse Selection Guide for complete context</a>.

351 High Amp Circuit Breaker: IP67 Auto Reset Protection from 25A to 300A

OptiFuse 351 is a sealed IP67 Type I auto-reset circuit breaker for high-current DC branches. Rated up to 48VDC, 25A to 300A, with 3/8-16 studs.

351 High Amp Circuit Breaker: IP67, 25A to 300 | OptiFuse

https://cms.optifuse.com/uploads/2026/02/351-scaled.jpg

If you’re adding an accessory circuit in a vehicle or DC system, an in-line fuse holder is the cleanest way to put protection where it belongs: right in the harness. The OptiFuse <a href="https://www.optifuse.com/fuse-holders-blocks-and-accessories/automotive-blade-fuses-4/in-line-fuse-holder-5/15/">LPM-01</a> is a compact in-line holder for Mini blade fuses with an integrated snap-on cover and an IP65 rating, making it a strong fit for automotive and marine wiring where splash, dust, and vibration are expected.

<ul>
<li class="p2">
Fuse type: Mini blade (use with OptiFuse ANM / APM Mini fuses)
</li>
<li class="p2">
Voltage rating: 125 VDC
</li>
<li class="p2">
Ingress protection: IP65 (snap-on cap)
</li>
<li class="p2">
Current capability: up to 30 A, depending on wire gauge
</li>
<li class="p2">
Leads: UL1015 stranded pigtails, 4 in each side
</li>
<li class="p2">
Temperature range: -40°C to +85°C
</li>
</ul>

<ul>
<li>Saves space versus adding a separate fuse block.</li>
<li>Keeps the fuse serviceable while helping protect the fuse cavity from water and airborne contaminants.</li>
<li>Wire-gauge options let you match the holder to the branch circuit current (don’t overspec the fuse if the pigtails are smaller).</li>
</ul>

If you need the holder to match a harness standard, LPM-01 supports configurable options including:
<ul>
<li>Wire gauge: 12 / 14 / 16 / 18 AWG</li>
<li>Wire colors: Red, Yellow, Orange, Black</li>
<li>Packaging: Bulk or blister pack</li>
</ul>
For additional details, please refer to the <a href="https://www.optifuse.com/blog/in-line-fuse-holder-customization/">In-Line Fuse Holder Customization Guide</a>.
For custom inquiries, please contact our factory team at <a href="http://sales@optifuse.com">sales@optifuse.com</a>

Pair it with the OptiFuse <a href="https://www.optifuse.com/fuses/automotive-blade-fuses-35/193/">ANM-UL Mini blade fuse</a> family (2A–30A, 32 VDC, 1000A interrupt rating) for common automotive branches, or select the Mini fuse that matches your system requirements.
Need a quick refresher on best practices? Follow OptiFuse’s <a href="https://www.optifuse.com/blog/how-install-in-line-fuse-holder/">step-by-step guide on how to install an in-line fuse holder</a>, then size the fuse using nominal current, voltage, and available fault current. <a href="https://www.optifuse.com/blog/optifuse-fuse-selection-guide/">See our Fuse Selection Guide for complete context</a>.

LPM-01 In-Line Mini Fuse Holder: IP65 Protection for Clean Harness Add-Ons

OptiFuse LPM-01 is an IP65 in-line Mini blade fuse holder rated up to 125VDC and up to 30A by wire gauge. Built for automotive and marine harness installs.