Fuseholders

Image Part Number Description / PDF Quantity Rfq
3554-4

3554-4

Eaton

BUSS FUSEBLOCK

0

BG3022SQ

BG3022SQ

Eaton

FUSE BLOCK CART 600V 20A CHASSIS

0

CH221DNXU

CH221DNXU

Eaton

FUSE HLDR 22X58 NEUTRAL

0

BK/4861-01

BK/4861-01

Eaton

FUSE CLIP

0

CH081D

CH081D

Eaton

FUSE HLDR CART 400V 25A DIN RAIL

0

1A1360-04

1A1360-04

Eaton

FUSE CLIP

0

JM60400-2MW22

JM60400-2MW22

Eaton

FUSE BLOCK CART 600V 400A SMD

0

BK/HLS-F

BK/HLS-F

Eaton

FUSE BLOCK BLADE 125V 15A PCB

0

BH-0121

BH-0121

Eaton

FUSE BLOK BLT DWN 500V 100A CHAS

0

HEB-AC

HEB-AC

Eaton

FUSE HOLDR CART 600V 30A IN LINE

0

SOY

SOY

Eaton

FUSE TRON BOX COVER UNIT

0

BMA6033SQ

BMA6033SQ

Eaton

FUSE BLOCK CART 600V 30A CHASSIS

0

TCFH60N

TCFH60N

Eaton

FUSEHOLDER WIND CUBE

26

HPG-EE

HPG-EE

Eaton

FUSE HOLDR CART 600V 15A PNL MNT

0

HPS-FF

HPS-FF

Eaton

FUSE HLDR CART 480V 30A PNL MNT

0

R25100-1COR

R25100-1COR

Eaton

FUSE BLOK CART 250V 100A CHASSIS

0

FH25HM

FH25HM

Eaton

BUSS FUSEBLOCK

0

RM60060-3CR

RM60060-3CR

Eaton

FUSE BLK CLASS R 600V 60A 3POLE

0

JM60100-1CR

JM60100-1CR

Eaton

FUSE BLOCK CART 600V 100A SMD

0

RM25060-3CR

RM25060-3CR

Eaton

FUSE BLK CLASS R 250V 60A 3POLE

0

Fuseholders

1. Overview

Fuseholders are mechanical devices designed to safely house and connect fuses into electrical circuits. They ensure reliable mounting, electrical continuity, and safe isolation of fuses during overcurrent protection. As critical components in circuit protection systems, fuseholders prevent equipment damage and fire hazards by enabling controlled interruption of excessive current flow. Their importance spans industries such as power distribution, automotive, and industrial automation, where electrical safety and system reliability are paramount.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Panel Mount FuseholdersEnclosed design with front-accessible fuse compartmentIndustrial control panels, HVAC systems
Base Mount FuseholdersModular design with removable fuse basePower distribution units, electrical substations
Cartridge FuseholdersCylindrical design for DIN-rail mountingProcess automation systems, machinery
SMT (Surface Mount) FuseholdersMiniaturized PCB-mount designConsumer electronics, telecommunications

3. Structure and Components

Typical fuseholders consist of: - Insulating housing (thermoplastic/phenolic resin) - Contact springs (phosphor bronze or beryllium copper) - Fuse retention mechanism (screw/clamp terminals) - Terminal connections (solder tags, PCB pins, or cable lugs) - Arc suppression chamber (ceramic/insulating barriers) The design ensures mechanical stability, low contact resistance (<10m ), and dielectric strength up to 2500VAC.

4. Key Technical Specifications

ParameterTypical RangeImportance
Voltage Rating6-1000V AC/DCDetermines circuit compatibility
Current Rating0.5-630ADefines maximum operational current
Breaking Capacity10kA-50kASafety during fault conditions
Response Time1ms-10sProtection speed for sensitive components
Temperature Range-40 C to +125 CEnvironmental reliability
IP RatingIP20-IP67Protection against dust/water ingress

5. Application Fields

  • Energy: Solar inverters, battery management systems
  • Automotive: EV charging stations, ECU protection
  • Industrial: PLC control circuits, motor drives
  • Telecom: 5G base stations, network switches
  • Aerospace: Avionics power distribution

6. Leading Manufacturers and Products

ManufacturerKey Product SeriesNotable Features
LittelfusePOLO Panel MountModular design with visual indicators
MersenActi 9 seriesHigh breaking capacity (100kA)
EatonCircuit Protection EnclosuresUL94 V-0 rated materials
Bel Fuse0ZC SeriesSurface-mount with over-temperature cutoff

7. Selection Recommendations

Key considerations include: - Matching voltage/current ratings with system requirements - Environmental factors (temperature, vibration, humidity) - Accessibility requirements for fuse replacement - Compliance with standards (UL/IEC/EN) - Short-circuit current capacity of the installation - Mounting orientation and space constraints

Industry Trends and Future Outlook

Emerging trends include: - Miniaturization for EV and portable electronics - Integration with smart monitoring systems (IoT-enabled fuseholders) - Development of RoHS-compliant materials - High-voltage DC compatibility for renewable energy systems - Improved arc flash mitigation technologies The global market is projected to grow at 5.8% CAGR through 2027, driven by electric vehicle adoption and industrial automation demands.

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