Littelfuse 3455LF3A - PANELMNT SHKSAFE FUSHLDR 5X20MM FUS LF3A. Designed to eliminate the possibility of electrical shock, as defined in IEC standards 65 and 257. Shock-Safe fuseholders feature a low profile body, fingergrip knob and anti-tease feature that eliminates circuit interruptionwhen knob is accidentally depressed.
Littelfuse

3455LF3A

Alternate Item Number: 03455LF3X

UPC: 079458004441


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BrochureTechnical BulletinSpecification Sheet

Contact for Pricing

Overview

The Littelfuse 3455LF3A is a panel-mount, shock-safe fuseholder designed to meet stringent IEC standards 65 and 257, providing a critical safety feature by eliminating the possibility of electrical shock. This fuseholder is specifically engineered for 5x20mm fuses, ensuring compatibility with a wide range of protection devices. Its low-profile body design is advantageous in space-constrained industrial control panels and equipment, allowing for efficient integration without compromising accessibility. The integrated finger-grip knob facilitates easy fuse replacement and maintenance, even in environments where gloves may be worn. A key safety innovation is the anti-tease feature, which prevents accidental circuit interruption. This is achieved by ensuring that the circuit remains closed until the knob is fully rotated to release the fuse, thereby eliminating unintended disconnections that can occur if the knob is accidentally depressed during handling or maintenance. The LF3A series fuseholder from Littelfuse offers a reliable and secure method for housing and protecting fuses in applications where personnel safety is paramount. Its robust construction and adherence to international safety standards make it an essential component for industrial machinery, power supplies, and control systems requiring enhanced electrical safety measures. The panel mount design ensures a secure and permanent installation within equipment enclosures.
  • IEC 65 and 257 compliant for electrical shock protection
  • Accommodates 5x20mm fuses
  • Low-profile panel mount design
  • Finger-grip knob for easy operation
  • Anti-tease feature prevents accidental circuit interruption

Specifications

Application
Circuit Board
Brand Name
Littelfuse
Current Rating
3 A
Material
Poly
Mounting Type
Panel Mount
Series
LF3A
Size
5x20mm
Special Features
Drip proof option available on screwdriver slot knob style
Standard
RoHS
Sub Brand
345 Series
Type
Fuseholder
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3452LS3A

PANELMOUNT SHKSAFE FSEHLDR 2AG FUSE LS3A. Designed to eliminate the possibility of electrical shock, as defined in IEC standards 65 and 257. Shock-Safe fuseholders feature a low profile body, fingergrip knob and anti-tease feature that eliminates circuit interruptionwhen knob is accidentally depressed.
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Frequently Asked Questions

What products does Littelfuse Industrial division provide?

The Industrial division offers fuses, fuse holders, protection relays, and timers to address needs for protection, safe control, and distribution of electrical power.

What applications are Littelfuse High-Speed Fuses designed for?

High-speed fuses protect critical power semiconductor devices against short circuits in power conversion applications like inverters, variable-speed drives, UPS, and DC drive systems.

What are the ratings for Littelfuse 10 x 38 mm fuses?

These fuses are available in time-delay, fast-acting, board mount, or solar versions, with ratings from 125 to 1000 volts and 1/10 to 30 amperes.

What types of protection relays does Littelfuse offer?

Littelfuse offers feeder, industrial Shock-Block GFCI, resistance grounding/monitoring, voltage, arc-flash, motor, pump, ground-fault, and trailing-cable protection relays.

How can I get technical support for Littelfuse products?

You can contact the Littelfuse Techline at +1-800-TEC-FUSE (800-832-3873) or email [email protected] for expert assistance.

Where can I find training courses on Littelfuse products?

The Littelfuse University (LFU) offers in-depth training courses and quick references on products, programs, and tools. Visit LittelfuseUniversity.com to register.

How can I check product availability and pricing?

You can access product availability, pricing, and place orders through the private website LittelfuseBusinessCenter.com.

Does Littelfuse provide arc-flash protection solutions?

Yes, Littelfuse arc-flash relays detect developing arc-flash incidents and send a trip signal to interrupt power before significant damage occurs.

What is the Littelfuse MROplus™ program?

The MROplus™ program helps manufacturing facilities save money by reducing inventory and downtime while improving safety and productivity.

Where can I download Littelfuse digital marketing assets?

A variety of digital tools, product images, videos, and literature can be downloaded from the Littelfuse digital asset portal at Littelfuse.com/webdam.

Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.