Littelfuse 345633A - PANEL MOUNT SHOCK-SAFE FUSEHOLDER 633 A. 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

345633A

Alternate Item Number: 03450633X

UPC: 079458107388


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Overview

The Littelfuse 345633A Panel Mount Shock-Safe Fuseholder is a high-current, IEC 60065 and 60127 compliant solution designed for industrial applications requiring reliable electrical shock protection. Rated at 633A with screw terminal connections, this panel-mount fuseholder ensures secure circuit protection while preventing accidental interruptions through its anti-tease feature. The design eliminates electrical shock hazards as defined by IEC standards, making it ideal for environments where safety compliance is critical. Available in two knob styles—screwdriver slot and finger grip—the 345633A offers installation flexibility. The screwdriver slot version includes an optional drip-proof feature for enhanced durability in harsh conditions. With five fuse holder types and two terminal choices, this fuseholder reduces inventory complexity by accommodating diverse application needs. Its robust construction and compliance with international safety standards make it suitable for demanding industrial, commercial, and automotive environments where reliability and safety are non-negotiable. Key specifications include a 633A current rating, screw terminal connections, and panel-mount configuration. The anti-tease mechanism prevents circuit interruption when the knob is accidentally depressed, ensuring continuous operation in critical systems. Whether used in power distribution panels, industrial machinery, or automotive applications, the Littelfuse 345633A delivers the performance and safety required for high-demand environments.
  • 633A current rating with screw terminal connections
  • IEC 60065 and 60127 compliant for electrical shock protection
  • Anti-tease feature prevents accidental circuit interruption
  • Available in screwdriver slot and finger grip knob styles
  • Optional drip-proof protection for harsh environments

Specifications

Application
Circuit Board
Brand Name
Littelfuse
Special Features
Drip proof option available on screwdriver slot knob style
Standard
RoHS
Sub Brand
345 Series
Type
Fuseholder
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E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
Control Transformer Accessories - Secondary Fuse Kit 3

SFK3

Control Transformer Accessories - Secondary Fuse Kit 3
Features:For (2) Fuses with Primary and Secondary Finger Safe Covers Kit, Application:Control Transformer, Class:CC

FBPC1

Features:For (2) Fuses with Primary and Secondary Finger Safe Covers Kit, Application:Control Transformer, Class:CC
The Littelfuse 600 V in-line watertight fuse holders are the ideal answer for all high humidity and corrosive environments where fuses are required. Available in both breakaway and non-breakaway, single and double pole versions, these fuse holders allow maximum flexibility for any application.

LEXAA

The Littelfuse 600 V in-line watertight fuse holders are the ideal answer for all high humidity and corrosive environments where fuses are required. Available in both breakaway and non-breakaway, single and double pole versions, these fuse holders allow maximum flexibility for any application.
RM PV 1P 10/14X85 1500VDC

57PV1085

RM PV 1P 10/14X85 1500VDC
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PRIMARY FUSE KIT, CLASS CC, 2POLE
Fuse Holder, 600V Threaded

18880300002

Fuse Holder, 600V Threaded
FUSE HOLDER KIT, 1 PER, 153D SERIES

FH_KIT1

FUSE HOLDER KIT, 1 PER, 153D SERIES
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1SNA299486R2400

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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.