LMRF 10x38mm Ceramic Cartridge Fuse | 500V 1A~32A Marine & Civil Fuse Link

LMRF 10x38mm Ceramic Cartridge Fuse | 500V 1A~32A Marine & Civil Fuse Link

The LMRF cylindrical ceramic fuse link is a 10×38mm cartridge safety fuse rated 500V AC, covering full current range from 1A to 32A. It adopts high-purity copper melting core and copper end caps together with fire-resistant ceramic housing, effectively suppressing surge current peaks to protect circuits. Designed for both marine vessel electrical systems and general civil industrial distribution circuits, this corrosion-resistant fuse features stable conductivity, long service life and easy installation, supplied direct from factory with full specification support.

The LMRF cylindrical ceramic fuse link is a 10×38mm cartridge safety fuse rated 500V AC, covering full current range from 1A to 32A. It adopts high-purity copper melting core and copper end caps together with fire-resistant ceramic housing, effectively suppressing surge current peaks to protect circuits. Designed for both marine vessel electrical systems and general civil industrial distribution circuits, this corrosion-resistant fuse features stable conductivity, long service life and easy installation, supplied direct from factory with full specification support.

1. Product Overview

LMRF series cylindrical ceramic fuse link is a widely used low-voltage cartridge overcurrent protection component, sized standard 10×38mm with rated voltage up to 500V. Available in complete current grades from 1A to 32A, this fuse is dual-purpose for marine ship electrical equipment and general civil industrial & household power distribution circuits.

Constructed with copper melting core, solid copper end caps and flame-retardant ceramic tube shell, it limits surge current impact and provides reliable short-circuit & overload protection for wires, control boards, motors and marine electrical appliances. Manufactured with genuine raw materials, no false current labeling, direct factory wholesale with bulk discounts and formal invoicing service.

2. Core Product Features

1. Complete Full Current Range (1A ~ 32A)

Full standard specifications to match diverse load circuit demands:

1A / 2A / 3A / 4A / 5A / 6A / 8A / 10A / 16A / 20A / 25A / 32A

Suitable for small control circuits, lighting loops, marine auxiliary equipment and medium-power machine control circuits. Custom special current specifications are available upon customer request.

2. Copper Melting Core + Solid Copper End Caps

  • High-purity copper fuse core delivers stable, consistent melting characteristics, effectively weaken the damage of instantaneous current peak surges to electrical equipment
  • Thick copper caps on both ends reduce contact resistance, excellent electrical conductivity, avoid overheating at terminals under long-term rated load
  • Anti-oxidation plating treatment on copper parts, strong corrosion resistance to fit humid marine cabin environments

3. Fireproof Insulated Ceramic Housing

Integrated high-temperature resistant ceramic tube shell:
  • Superior insulation and flame retardant performance, no combustion or cracking when overcurrent melts the core
  • Simple compact cylindrical structure, compatible with all standard 10×38mm fuse holders
  • Resists deformation under high ambient temperature inside distribution cabinets and ship electrical rooms

4. Dual Application Scenarios: Marine + Civil

Special formula material design adapts to humid, salt-spray marine vessel electrical environments, also stable for conventional indoor civil industrial circuits:
  • Marine use: Ship lighting, pump control, cabin auxiliary electrical panel protection
  • Civil use: Household distribution boxes, machine tools, automation control boards, instrument power circuits

5. Easy Installation & Long Service Life

Standard 10×38 universal size, directly insert into matching fuse base without modification. Anti-corrosion internal structure extends service life under continuous operating current, stable performance for long-term round-the-clock equipment operation.

6. Factory Direct Supply, Reliable Quality Guarantee

100% genuine raw material production, strictly calibrated rated current, never falsely marked current grades. Support bulk wholesale preferential price, formal VAT invoice supply for enterprise procurement.

3. Working Conditions

This LMRF ceramic cartridge fuse maintains stable protection performance under the following working environments:
  1. Ambient temperature: -10℃ ~ +60℃
  2. Protection characteristic: Suitable for indoor cabinets and ventilated marine electrical cabins; avoid long-term immersion in water
  3. Atmosphere: Can withstand mild salt fog for marine use; avoid severe corrosive chemical gas environment
  4. Altitude: Normal performance below 2000 meters above sea level
  5. Humidity: Relative humidity ≤90%, no continuous condensation on fuse surface

3. Unified Technical Specifications

ParameterUnified Specification for LMRF Series Fuse
ModelLMRF Cylindrical Cartridge Fuse
Outer Dimension10mm diameter × 38mm length
Rated Voltage500V AC
Rated Current Grades1A,2A,3A,4A,5A,6A,8A,10A,16A,20A,25A,32A
Internal Melting Core MaterialHigh purity copper
End Cap MaterialThickened anti-rust copper cap
Housing MaterialFireproof insulating ceramic tube
Executive StandardIEC 269, GB/T standard low voltage fuse specification
Core FunctionsOverload protection, short-circuit fault breaking protection
Applicable ScenesMarine ship electrical systems, civil industrial & household distribution circuits

4. Typical Applications

  • Marine vessel cabin lighting, water pump, fan auxiliary electrical panels
  • Household miniature distribution box branch circuit protection
  • CNC machine tools, textile equipment control power circuits
  • Automation instruments, sensor low-voltage power supply loops
  • Small refrigeration, packaging machinery internal circuit protection
  • Charging equipment, small power control cabinet safety fusing

5. Frequently Asked Questions (FAQ)

1. What’s the advantage of copper core copper cap compared to iron alloy fuses?

Copper material has much better electrical conductivity, lower heat generation during operation, more accurate melting response under overload, and anti-corrosion property to adapt humid marine environments, while iron alloy products easily oxidize and cause overheating.

2. Can this LMRF fuse be used on ships?

Yes, this series is specially optimized for marine environments with anti-salt fog copper components and sealed ceramic tube, widely matched with ship standard electrical fuse holders.

3. What size fuse holder fits LMRF ?

LMRF adopts standard 10×38mm outer size, compatible with all universal 10*38 cartridge fuse bases, DIN rail fuse holders and panel mount fuse sockets.

4. How to select the correct current specification?

Select fuse rated current 1.2~1.5 times the continuous working current of the protected circuit to avoid frequent blown fuses under normal load while retaining overload protection function.

5. Does this product support customized current specifications?

We supply all standard 1A~32A grades in stock, and can produce non-standard special current specifications according to large customer order demands.

6. Is the rated current marked accurate?

All LMRF fuses undergo strict overload melting testing before delivery, strictly follow standard current calibration, no inflated or false labeling of current ratings.

7. Technical documentation and support

Download the full datasheet for detailed specifications, wiring diagrams and trip coordination guides.
Please contact our technical team for custom configuration or OEM/ODM solutions for your project.
Request a quote with details about your project for volume pricing, lead times, and compliance certifications.

1. Product Overview

LMRF series cylindrical ceramic fuse link is a widely used low-voltage cartridge overcurrent protection component, sized standard 10×38mm with rated voltage up to 500V. Available in complete current grades from 1A to 32A, this fuse is dual-purpose for marine ship electrical equipment and general civil industrial & household power distribution circuits.

Constructed with copper melting core, solid copper end caps and flame-retardant ceramic tube shell, it limits surge current impact and provides reliable short-circuit & overload protection for wires, control boards, motors and marine electrical appliances. Manufactured with genuine raw materials, no false current labeling, direct factory wholesale with bulk discounts and formal invoicing service.

2. Core Product Features

1. Complete Full Current Range (1A ~ 32A)

Full standard specifications to match diverse load circuit demands:

1A / 2A / 3A / 4A / 5A / 6A / 8A / 10A / 16A / 20A / 25A / 32A

Suitable for small control circuits, lighting loops, marine auxiliary equipment and medium-power machine control circuits. Custom special current specifications are available upon customer request.

2. Copper Melting Core + Solid Copper End Caps

  • High-purity copper fuse core delivers stable, consistent melting characteristics, effectively weaken the damage of instantaneous current peak surges to electrical equipment
  • Thick copper caps on both ends reduce contact resistance, excellent electrical conductivity, avoid overheating at terminals under long-term rated load
  • Anti-oxidation plating treatment on copper parts, strong corrosion resistance to fit humid marine cabin environments

3. Fireproof Insulated Ceramic Housing

Integrated high-temperature resistant ceramic tube shell:
  • Superior insulation and flame retardant performance, no combustion or cracking when overcurrent melts the core
  • Simple compact cylindrical structure, compatible with all standard 10×38mm fuse holders
  • Resists deformation under high ambient temperature inside distribution cabinets and ship electrical rooms

4. Dual Application Scenarios: Marine + Civil

Special formula material design adapts to humid, salt-spray marine vessel electrical environments, also stable for conventional indoor civil industrial circuits:
  • Marine use: Ship lighting, pump control, cabin auxiliary electrical panel protection
  • Civil use: Household distribution boxes, machine tools, automation control boards, instrument power circuits

5. Easy Installation & Long Service Life

Standard 10×38 universal size, directly insert into matching fuse base without modification. Anti-corrosion internal structure extends service life under continuous operating current, stable performance for long-term round-the-clock equipment operation.

6. Factory Direct Supply, Reliable Quality Guarantee

100% genuine raw material production, strictly calibrated rated current, never falsely marked current grades. Support bulk wholesale preferential price, formal VAT invoice supply for enterprise procurement.

3. Working Conditions

This LMRF ceramic cartridge fuse maintains stable protection performance under the following working environments:
  1. Ambient temperature: -10℃ ~ +60℃
  2. Protection characteristic: Suitable for indoor cabinets and ventilated marine electrical cabins; avoid long-term immersion in water
  3. Atmosphere: Can withstand mild salt fog for marine use; avoid severe corrosive chemical gas environment
  4. Altitude: Normal performance below 2000 meters above sea level
  5. Humidity: Relative humidity ≤90%, no continuous condensation on fuse surface

3. Unified Technical Specifications

ParameterUnified Specification for LMRF Series Fuse
ModelLMRF Cylindrical Cartridge Fuse
Outer Dimension10mm diameter × 38mm length
Rated Voltage500V AC
Rated Current Grades1A,2A,3A,4A,5A,6A,8A,10A,16A,20A,25A,32A
Internal Melting Core MaterialHigh purity copper
End Cap MaterialThickened anti-rust copper cap
Housing MaterialFireproof insulating ceramic tube
Executive StandardIEC 269, GB/T standard low voltage fuse specification
Core FunctionsOverload protection, short-circuit fault breaking protection
Applicable ScenesMarine ship electrical systems, civil industrial & household distribution circuits

4. Typical Applications

  • Marine vessel cabin lighting, water pump, fan auxiliary electrical panels
  • Household miniature distribution box branch circuit protection
  • CNC machine tools, textile equipment control power circuits
  • Automation instruments, sensor low-voltage power supply loops
  • Small refrigeration, packaging machinery internal circuit protection
  • Charging equipment, small power control cabinet safety fusing

5. Frequently Asked Questions (FAQ)

1. What’s the advantage of copper core copper cap compared to iron alloy fuses?

Copper material has much better electrical conductivity, lower heat generation during operation, more accurate melting response under overload, and anti-corrosion property to adapt humid marine environments, while iron alloy products easily oxidize and cause overheating.

2. Can this LMRF fuse be used on ships?

Yes, this series is specially optimized for marine environments with anti-salt fog copper components and sealed ceramic tube, widely matched with ship standard electrical fuse holders.

3. What size fuse holder fits LMRF ?

LMRF adopts standard 10×38mm outer size, compatible with all universal 10*38 cartridge fuse bases, DIN rail fuse holders and panel mount fuse sockets.

4. How to select the correct current specification?

Select fuse rated current 1.2~1.5 times the continuous working current of the protected circuit to avoid frequent blown fuses under normal load while retaining overload protection function.

5. Does this product support customized current specifications?

We supply all standard 1A~32A grades in stock, and can produce non-standard special current specifications according to large customer order demands.

6. Is the rated current marked accurate?

All LMRF fuses undergo strict overload melting testing before delivery, strictly follow standard current calibration, no inflated or false labeling of current ratings.

7. Technical documentation and support

Download the full datasheet for detailed specifications, wiring diagrams and trip coordination guides.
Please contact our technical team for custom configuration or OEM/ODM solutions for your project.
Request a quote with details about your project for volume pricing, lead times, and compliance certifications.

Data Download

LVMA low voltage selection manual

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