Littelfuse 155109A - TWST-LCK FUSEHLDR ASSEM W/SFE FUSE 9A. Twist-Lock In-Line Fuseholder for 3AG/3AB and SFE Fuses.
Littelfuse

155109A

Alternate Item Number: 01550109ZXA

UPC: 079458115161


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Overview

The Littelfuse 155109A TWST-LCK Fuseholder Assembly is a premium in-line fuseholder solution engineered for robust performance and reliable circuit protection in demanding industrial and electronic environments. Designed to accommodate both 3AG/3AB and SFE type fuses, this assembly offers versatility for a wide range of applications. Its integral twist-lock mechanism ensures a secure and vibration-resistant connection, preventing accidental fuse dislodgement and maintaining circuit integrity under strenuous operating conditions. This is crucial for applications where equipment reliability is paramount. Manufactured by Littelfuse, a globally recognized leader in circuit protection, the 155109A fuseholder embodies the company's commitment to quality and innovation. The 9A current rating makes it suitable for protecting circuits and components that draw moderate power, preventing damage from overcurrents and short circuits. Its in-line design facilitates straightforward integration into existing wiring harnesses or new system designs, minimizing installation complexity and space requirements. The durable construction of this fuseholder assembly is built to withstand the rigors of industrial settings, offering long-term operational stability and safety. Key features and benefits of the Littelfuse 155109A include: * **Secure Twist-Lock Mechanism:** Provides a positive locking action that resists vibration and accidental opening, ensuring continuous circuit protection. * **Broad Fuse Compatibility:** Accepts both 3AG/3AB and SFE fuse types, offering flexibility in fuse selection and replacement. * **Robust Construction:** Built with high-quality materials for durability and reliable performance in harsh industrial environments. * **9A Current Rating:** Suitable for a variety of power applications requiring dependable overcurrent protection. * **In-Line Design:** Simplifies installation and integration into electrical systems, saving valuable space. This fuseholder assembly is an ideal choice for engineers and technicians seeking dependable circuit protection for applications such as power supplies, industrial machinery, control panels, automotive electronics, and custom equipment builds. By utilizing the Littelfuse 155109A, you enhance system safety, prevent costly equipment damage, and ensure operational continuity. Trust in Littelfuse's extensive expertise in fuse technology to deliver solutions that meet the highest standards of performance and reliability. The SKU 155109A represents a commitment to safeguarding your critical electrical systems with proven and effective protection.
  • Littelfuse 155109A TWST-LCK Fuseholder Assembly
  • Twist-lock mechanism for secure, vibration-resistant connection
  • Compatible with 3AG/3AB and SFE fuses
  • 9A current rating for reliable overcurrent protection
  • In-line design for easy installation and space saving

Specifications

Brand Name
Littelfuse
Current Rating
9 A
Series
TWST-LCK
Special Features
See in the web sheet
Standard
See in the web sheet
Sub Brand
155 Series Fuseholder
Type
In-Line Holders
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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.