Littelfuse 3455LS7A - PANELMNT SHKSAFE FUSHLDR 5X20MM FUS LS7A. 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

3455LS7A

Alternate Item Number: 03455LS7X

UPC: 079458004533


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Overview

The Littelfuse 3455LS7A is a panel mount fuseholder engineered for enhanced electrical safety, specifically designed to eliminate the risk of electrical shock as defined by IEC standards 65 and 257. This unit is ideal for industrial applications requiring stringent safety compliance. It accommodates standard 5x20mm fuses, providing reliable circuit protection. The fuseholder features a low-profile body for space efficiency and a user-friendly fingergrip knob for easy fuse access. A key safety feature is its anti-tease function, which prevents accidental circuit interruption when the knob is inadvertently depressed during operation or maintenance. Manufactured by Littelfuse, SKU 3455LS7A offers a dependable solution for critical electrical installations. Its design ensures operational reliability and user safety, making it suitable for control panels, power distribution units, and other equipment where shock hazard mitigation is paramount. The robust construction and adherence to international safety standards underscore its suitability for demanding industrial environments. This fuseholder is a UL-listed component, further validating its safety and performance credentials. Its compatibility with common 5x20mm fuses simplifies integration into existing systems.
  • IEC 65 & 257 compliant for shock safety
  • Accommodates 5x20mm fuses
  • Low profile panel mount design
  • Fingergrip knob for easy operation
  • Anti-tease feature prevents accidental interruption

Specifications

Application
Circuit Board
Brand Name
Littelfuse
Material
Poly
Mounting Type
Panel Mount
Series
LS7A
Series
Shock-Safe
Series
3455LS
Series
PANELMNT SHKSAFE FUSHLDR
Series
3455
Size
5x20mm
Size
5x20mm Fuse
Special Features
Drip proof option available on screwdriver slot knob style
Standard
RoHS
Sub Brand
345 Series
Type
Fuseholder
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Frequently Asked Questions

What are the specifications for 10 x 38 mm fuses?

10 x 38 mm fuses offer compact supplemental protection, available in time-delay, fast-acting, board mount, or solar versions. Ratings range from 125 to 1000 volts and 1/10 to 30 amperes.

What voltage do Littelfuse solar fuses support?

Littelfuse offers solar fuses and holders that support applications up to 1500 Vdc for both high-current and low-current needs.

What standard do Industrial Shock-Block® GFCIs meet?

Industrial Shock-Block® GFCIs are permanently connected special-purpose GFCIs that meet UL Standard 943C Class C and Class D.

What do Trailing-Cable Protection Relays monitor?

Trailing-Cable Protection Relays continuously monitor the integrity of the ground conductor in portable cables. This protects cable-fed equipment from hazardous voltages caused by ground faults.

What are key features of Littelfuse fuse blocks?

Littelfuse fuse blocks and holders feature compact designs, an indication feature, and offer the flexibility of DIN-rail mounting.

What safety features do POWR-BLOKS offer?

POWR-BLOKS power distribution blocks are touch-safe, and available covers enhance safety by reducing the risk of accidental contact.

What are Littelfuse Pre-Engineered panels designed for?

Littelfuse Pre-Engineered electrical switch panel solutions are UL Listed, pre-built, and customizable. They are designed to meet NEC® coordination requirements.

What applications are Littelfuse pump controllers for?

Littelfuse pump controllers protect and disable a pump if a hazardous condition arises. They are available for both single-phase and three-phase applications.

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.