Fuseholders

Part Number	Description / PDF	Quantity
74-IFH6 NTE Electronics, Inc.	IN LINE FUSE HOLDER	3387
74-AFT-3 NTE Electronics, Inc.	AUTO FUSE TAP FOR LOW PRO	796
74-IFHMA30 NTE Electronics, Inc.	IN LINE FUSE HOLDER	338
74-IFHA30 NTE Electronics, Inc.	IN LINE FUSE HOLDER	8
74-AFT-4 NTE Electronics, Inc.	AUTO FUSE TAP FOR MICRO-2	810
74-IFHMAL15 NTE Electronics, Inc.	IN LINE FUSE HOLDER	300
74-FH6 NTE Electronics, Inc.	FUSE HOLDER-FOR 6X30MM	0
74-FC10 NTE Electronics, Inc.	FUSE CLIP-FOR 10X38MM FUS	2856
74-AFT-2 NTE Electronics, Inc.	AUTO FUSE TAP FOR MINI	196
74-FC6 NTE Electronics, Inc.	FUSE CLIP-FOR 6X30MM FUSE	900
74-IFHAL30 NTE Electronics, Inc.	IN LINE FUSE HOLDER	473
74-IFHAL15 NTE Electronics, Inc.	IN LINE FUSE HOLDER	0
74-FH5 NTE Electronics, Inc.	FUSE HOLDER FOR 5 X 20MM	1066
74-FHX NTE Electronics, Inc.	FUSE HOLDER FOR MAX FUSES	233
74-FC3 NTE Electronics, Inc.	FUSE CLIP CART 250V 6A T/H	1660
74-FB5 NTE Electronics, Inc.	FUSE BLOCK-FOR 5X20MM	784
74-IFH5 NTE Electronics, Inc.	IN LINE FUSE HOLDER	2070
74-IFHMA15 NTE Electronics, Inc.	IN LINE FUSE HOLDER	1540
74-AFT-1 NTE Electronics, Inc.	AUTO FUSE TAP FOR STD	541
74-IFHMAL30 NTE Electronics, Inc.	IN LINE FUSE HOLDER	603

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

Type	Functional Features	Application Examples
Panel Mount Fuseholders	Enclosed design with front-accessible fuse compartment	Industrial control panels, HVAC systems
Base Mount Fuseholders	Modular design with removable fuse base	Power distribution units, electrical substations
Cartridge Fuseholders	Cylindrical design for DIN-rail mounting	Process automation systems, machinery
SMT (Surface Mount) Fuseholders	Miniaturized PCB-mount design	Consumer 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

Parameter	Typical Range	Importance
Voltage Rating	6-1000V AC/DC	Determines circuit compatibility
Current Rating	0.5-630A	Defines maximum operational current
Breaking Capacity	10kA-50kA	Safety during fault conditions
Response Time	1ms-10s	Protection speed for sensitive components
Temperature Range	-40 C to +125 C	Environmental reliability
IP Rating	IP20-IP67	Protection 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

Manufacturer	Key Product Series	Notable Features
Littelfuse	POLO Panel Mount	Modular design with visual indicators
Mersen	Acti 9 series	High breaking capacity (100kA)
Eaton	Circuit Protection Enclosures	UL94 V-0 rated materials
Bel Fuse	0ZC Series	Surface-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.