Littelfuse 344603 - INDICATING FUSEHOLDER 3/16 Q.C. 28 VOL. Blown Fuse Indicating / Low Profile Holders for 3AB/3AG Fuses.
Littelfuse

344603

Alternate Item Number: 03440603Z

UPC: 079458107043


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Overview

The **Littelfuse 344603 indicating fuseholder** is a high-performance, space-saving solution engineered for **3AB/3AG fuses** in demanding industrial and commercial applications. Designed with a **3/16-inch quick-connect (Q.C.) size** and a **28V voltage rating**, this low-profile fuseholder delivers reliable circuit protection while providing immediate visual feedback when a fuse is blown. Trusted by engineers and maintenance professionals worldwide, the 344603 fuseholder combines durability, precision, and ease of use to enhance system reliability and operational efficiency. **Key Features & Benefits:** - **Blown Fuse Indication:** The integrated indicator provides instant visual confirmation of a blown fuse, reducing troubleshooting time and minimizing downtime in critical systems. - **Low-Profile Design:** Its compact form factor ensures efficient space utilization in control panels, electrical enclosures, and compact device assemblies, making it ideal for applications where real estate is at a premium. - **High-Quality Construction:** Manufactured by **Littelfuse**, a global leader in circuit protection, the 344603 fuseholder meets stringent industrial standards for durability and performance, ensuring long-term reliability in harsh environments. - **Compatibility:** Specifically designed for **3AB/3AG fuse series**, this fuseholder supports a wide range of fuse types, offering flexibility for diverse electrical protection needs. - **Easy Installation:** The **3/16 Q.C. terminal design** simplifies wiring and installation, allowing for quick integration into existing systems without specialized tools or complex configurations. **Typical Applications:** The Littelfuse 344603 indicating fuseholder is widely used in industries such as **automotive, telecommunications, industrial machinery, power distribution, and consumer electronics**, where reliable fuse protection and quick fault identification are critical. Common applications include: - **Control panels** and **electrical enclosures** in manufacturing facilities. - **Power supplies** and **battery management systems** in automotive and renewable energy applications. - **Telecom infrastructure**, including routers, switches, and base stations. - **Industrial automation** systems, where space constraints and maintenance efficiency are priorities. - **HVAC systems**, security systems, and other commercial equipment requiring robust circuit protection. **Why Choose Littelfuse?** Littelfuse is a **trusted name in circuit protection**, with over a century of innovation and expertise in developing solutions that safeguard critical electrical systems. The 344603 fuseholder exemplifies this commitment, offering a **cost-effective, high-performance alternative** to standard fuseholders. Its **blown fuse indication** feature alone can save hours of diagnostic time in maintenance operations, translating to reduced labor costs and improved system uptime. Whether you're designing a new system or upgrading an existing one, the Littelfuse 344603 fuseholder provides a **reliable, space-efficient, and easy-to-maintain** solution for protecting 3AB/3AG fuses in low-voltage applications. **Installation & Maintenance Tips:** - Ensure proper **fuse compatibility** (3AB/3AG series) before installation. - Verify the **voltage rating (28V)** matches your system requirements to prevent overloading. - Use **appropriate wire gauges** for the Q.C. terminals to maintain secure connections. - Regularly inspect the indicator window for clarity to ensure reliable blown fuse detection. - For high-vibration environments, consider additional strain relief measures to secure the fuseholder in place. By choosing the **Littelfuse 344603 indicating fuseholder**, you’re not just selecting a component—you’re investing in **operational efficiency, reduced downtime, and long-term system reliability**. Backed by Littelfuse’s global reputation for quality and innovation, this fuseholder is a smart choice for professionals who demand performance without compromise.
  • Blown fuse indication for quick fault identification
  • Low-profile design for space-saving installations
  • Compatible with 3AB/3AG fuse series
  • 28V voltage rating for low-voltage applications
  • 3/16 Q.C. terminal design for easy wiring

Specifications

Amperage Rating
0.75 A
Application
electronic equipment & appliances
Brand Name
Littelfuse
Special Features
Slo-Blo
Standard
UL Standard 248-14
Sub Brand
326 Series
Type
3AB Slo-Blo
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

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.