Authorized Littelfuse Distributor
Littelfuse 345121A - SHOCK-SAFE FUSEHLDR FOR 5X20MM TYPE FUSE. Designed to eliminate electrical shock as defined by IEC standards 60065 and 60127, these panel-mount fuses holders offer a wide variety of options. This allows for inventory reduction and versatility. Anti-tease feature eliminates circuit interruption when knob is accidentally depressed Five fuse holder types for maximum flexibility. Two knob styles— screwdriver slot and fingergrip. Drip proof option available on screwdriver slot knob style. Two terminal choices depending on application.

Littelfuse 345121A SHOCK-SAFE FUSEHLDR FOR 5X20MM TYPE FUSE. Designed to eliminate electrical shock as…

Alternate Item Number: 03450121X

UPC: 079458107159


Documents & Media
BrochureSpecification Sheet

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Littelfuse 345121A Shock-Safe Fuse Holder is a panel-mount solution engineered for 5x20mm Type F fuses, designed to eliminate electrical shock hazards in compliance with IEC standards 60065 and 60127. This fuse holder features an anti-tease mechanism that prevents accidental circuit interruption when the knob is inadvertently depressed, ensuring continuous operation in critical applications. Available in five distinct fuse holder types, the 345121A offers maximum flexibility for inventory reduction and system versatility. Two knob styles are available: screwdriver slot for precision adjustments and finger-grip for quick access. The screwdriver slot knob style includes an optional drip-proof design, providing enhanced protection against moisture and harsh environmental conditions. Terminal options include screw and quick-connect configurations, enabling seamless integration into diverse applications. The panel-mount design ensures secure installation and long-term durability in demanding industrial environments, including industrial control panels, power distribution units, automation equipment, telecommunications, medical devices, and renewable energy systems. Key specifications include: - Fuse compatibility: 5x20mm Type F - Mounting type: Panel-mount - Knob styles: Screwdriver slot and finger-grip - Terminal types: Screw and quick-connect - Optional drip-proof design for screwdriver slot knob style The 345121A is ideal for applications requiring reliable fuse protection and electrical safety compliance in industrial and commercial settings.
  • Panel-mount shock-safe fuse holder for 5x20mm Type F fuses
  • Anti-tease feature prevents accidental circuit interruption
  • Available in screwdriver slot and finger-grip knob styles
  • Optional drip-proof design for screwdriver slot knob style
  • Terminal options: screw and quick-connect configurations

Specifications

Application
Circuit Board
Brand Name
Littelfuse
Connection Type
Screw Terminal / Quick-Connect
Ip Rating
IPX4 (Drip-proof option)
Material
Poly
Mounting Type
Panel-Mount
Series
345 Series
Size
5x20mm
Special Features
Drip proof option available on screwdriver slot knob style
Standard
RoHS
Sub Brand
345 Series
Type
Fuseholder
Fuse Holder GPM-B 600V CC

18813000026

Fuse Holder GPM-B 600V CC
ACS SHOCK-SAFE FUSEHLDR. Designed to eliminate electrical shock as defined by IEC standards 60065 and 60127, these panel-mount fuses holders offer a wide variety of options. This allows for inventory reduction and versatility. Anti-tease feature eliminates circuit interruption when knob is accidentally depressed Five fuse holder types for maximum flexibility. Two knob styles— screwdriver slot and fingergrip. Drip proof option available on screwdriver slot knob style. Two terminal choices depending on application.

H345933A

ACS SHOCK-SAFE FUSEHLDR. Designed to eliminate electrical shock as defined by IEC standards 60065 and 60127, these panel-mount fuses holders offer a wide variety of options. This allows for inventory reduction and versatility. Anti-tease feature eliminates circuit interruption when knob is accidentally depressed Five fuse holder types for maximum flexibility. Two knob styles— screwdriver slot and fingergrip. Drip proof option available on screwdriver slot knob style. Two terminal choices depending on application.
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
E 92/30S CC is a fuseholder for overcurrent and short circuit protection specific for class CC fuses

E92/30SCC

E 92/30S CC is a fuseholder for overcurrent and short circuit protection specific for class CC fuses
Dead front fuse holder front operated 22x58 4P 125A for RMS100

57035016

Dead front fuse holder front operated 22x58 4P 125A for RMS100
Terminal Covers (2 Covers Per Kit). Field installed primary and secondary IEC Touch Proof Cover Kit.

IP20

Terminal Covers (2 Covers Per Kit). Field installed primary and secondary IEC Touch Proof Cover Kit.
PANEL MOUNT SHOCK-SAFE FUSEHOLDER 613. Designed to eliminate electrical shock as defined by IEC standards 60065 and 60127, these panel-mount fuses holders offer a wide variety of options. This allows for inventory reduction and versatility. Anti-tease feature eliminates circuit interruption when knob is accidentally depressed Five fuse holder types for maximum flexibility. Two knob styles— screwdriver slot and fingergrip. Drip proof option available on screwdriver slot knob style. Two terminal choices depending on application.

345613-010

PANEL MOUNT SHOCK-SAFE FUSEHOLDER 613. Designed to eliminate electrical shock as defined by IEC standards 60065 and 60127, these panel-mount fuses holders offer a wide variety of options. This allows for inventory reduction and versatility. Anti-tease feature eliminates circuit interruption when knob is accidentally depressed Five fuse holder types for maximum flexibility. Two knob styles— screwdriver slot and fingergrip. Drip proof option available on screwdriver slot knob style. Two terminal choices depending on application.
PANEL MOUNT SHOCK-SAFE FUSEHOLDER 612. Designed to eliminate electrical shock as defined by IEC standards 60065 and 60127, these panel-mount fuses holders offer a wide variety of options. This allows for inventory reduction and versatility. Anti-tease feature eliminates circuit interruption when knob is accidentally depressed Five fuse holder types for maximum flexibility. Two knob styles— screwdriver slot and fingergrip. Drip proof option available on screwdriver slot knob style. Two terminal choices depending on application.

345612-010

PANEL MOUNT SHOCK-SAFE FUSEHOLDER 612. Designed to eliminate electrical shock as defined by IEC standards 60065 and 60127, these panel-mount fuses holders offer a wide variety of options. This allows for inventory reduction and versatility. Anti-tease feature eliminates circuit interruption when knob is accidentally depressed Five fuse holder types for maximum flexibility. Two knob styles— screwdriver slot and fingergrip. Drip proof option available on screwdriver slot knob style. Two terminal choices depending on application.

Frequently Asked Questions

What types of fuses does Littelfuse offer for industrial applications?

Littelfuse offers UL Class fuses, high-speed fuses, medium voltage fuses, 10 x 38 mm fuses, and solar fuses for industrial applications.

What are Littelfuse high-speed fuses used for?

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

What is the voltage and amperage range for 10 x 38 mm fuses?

These fuses are available with ratings from 125 to 1000 volts and 1/10 to 30 amperes.

What is the maximum voltage for Littelfuse solar fuses and holders?

Littelfuse offers solar fuses and holders with ratings up to 1500 Vdc for both high-current and low-current applications.

What is the purpose of Littelfuse feeder protection relays?

These relays protect circuits from overcurrent, ground faults, phase loss, overload, and other detrimental conditions.

What is unique about the Industrial Shock-Block® GFCI?

It is the first permanently connected special-purpose GFCI that meets UL Standard 943C Class C and Class D for people protection.

How do resistance grounding systems limit damage?

High-resistance grounding limits point-of-fault damage and eliminates arc-flash hazards and transit overvoltages associated with ground faults.

What do Littelfuse voltage monitors protect against?

They provide protection against both supply line and load side faults when the motor is running.

What functions can Littelfuse timers and flashers control?

They can delay starting and stopping loads, and control cycling and sequencing of motors, pumps, compressors, heaters, and lighting.

How do Littelfuse arc-flash protection relays work?

These relays detect a developing arc-flash incident and send a trip signal to interrupt power before significant damage occurs.

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.