Littelfuse 155104U - TWIST-LOCK INLINE HOLDER NO FUSE SFE 4. Twist-Lock In-Line Fuseholder for 3AG/3AB and SFE Fuses.
Littelfuse

155104U

Alternate Item Number: 01550104ZXU

UPC: 079458115604

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Overview

The Littelfuse 155104U is a robust and reliable Twist-Lock In-Line Fuseholder engineered to accommodate both 3AG/3AB and SFE series fuses. This essential component provides secure and efficient overcurrent protection for a wide array of industrial and commercial electrical systems. Designed with a user-friendly twist-lock mechanism, the 155104U ensures a positive and secure connection, minimizing the risk of accidental dislodgement and guaranteeing consistent electrical contact. This feature is critical in environments subject to vibration or frequent handling, where a stable fuse connection is paramount for operational integrity. Manufactured by Littelfuse, a globally recognized leader in circuit protection, the 155104U benefits from decades of expertise in designing and producing high-performance electrical components. This fuseholder is built to withstand the rigors of demanding applications, offering durability and long-term performance. Its versatile design makes it suitable for integration into various equipment, including control panels, power supplies, automotive systems, and specialized machinery. The in-line configuration allows for straightforward installation directly into a circuit, simplifying wiring and reducing assembly time for OEMs and maintenance professionals alike. Key features and benefits of the Littelfuse 155104U include: * **Secure Twist-Lock Mechanism:** Provides a positive locking action for enhanced fuse retention and reliable electrical continuity, crucial for preventing circuit interruptions due to mechanical stress. * **Broad Fuse Compatibility:** Accepts both 3AG/3AB and SFE type fuses, offering flexibility in fuse selection based on specific current and voltage requirements. This compatibility broadens its applicability across diverse protection needs. * **Durable Construction:** Built with high-quality materials to ensure longevity and resistance to environmental factors commonly found in industrial settings. * **Easy In-Line Installation:** The compact and straightforward design facilitates quick and efficient integration into existing or new electrical circuits, saving valuable installation time and labor costs. * **Trusted Littelfuse Quality:** Manufactured by a brand synonymous with circuit protection excellence, ensuring adherence to stringent quality standards and reliable performance. When selecting a fuseholder, professionals prioritize safety, reliability, and ease of use. The Littelfuse 155104U excels in all these areas. Its ability to securely house fuses prevents intermittent connections that can lead to equipment malfunction or premature component failure. The clear indication provided by the twist-lock mechanism reassures technicians that the fuse is properly seated. Furthermore, the in-line design is particularly advantageous for space-constrained applications where traditional panel-mount fuseholders might not be feasible. This fuseholder is an ideal choice for engineers and technicians who demand dependable circuit protection solutions that meet rigorous industry specifications and contribute to the overall safety and efficiency of their electrical systems. Trust the Littelfuse 155104U for your critical fuse protection needs.
  • Secure twist-lock mechanism for reliable fuse retention.
  • Compatible with 3AG/3AB and SFE series fuses.
  • Durable construction for demanding industrial environments.
  • Easy in-line installation simplifies wiring and assembly.
  • High-quality circuit protection from Littelfuse.

Specifications

Brand Name
Littelfuse
Material
High-quality
Mounting Type
Inline
Series
155104U
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.