Littelfuse TLS025LB - TLS025LB is a Telecommunications fuse with an ampere rating of 25.
Littelfuse

TLS025LB

Alternate Item Number: 0TLS025.TXLB

UPC: 079458061772

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Minimum Qty: 500

Multiplier: 500

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Overview

The **Littelfuse TLS025LB 25A Telecommunications Fuse** is a high-performance, precision-engineered overcurrent protection solution designed specifically for telecommunications infrastructure. As a trusted component in critical telecom networks, this fuse delivers reliable circuit protection to safeguard sensitive equipment against damaging overcurrent conditions. Engineered with Littelfuse’s decades of expertise in circuit protection, the TLS025LB ensures optimal performance in data centers, central offices, and network switching systems where uptime and reliability are non-negotiable. **Key Features and Benefits:** - **25A Ampere Rating:** Provides precise overcurrent protection tailored for telecommunications applications, balancing sensitivity and robustness to prevent nuisance tripping while ensuring component safety. - **High Reliability:** Manufactured to meet stringent industry standards, the TLS025LB undergoes rigorous testing to ensure consistent performance in demanding environments, including extreme temperatures and high-vibration conditions common in telecom installations. - **Compact and Robust Design:** Its space-efficient form factor allows for easy integration into densely packed telecom equipment, while durable construction ensures long-term reliability in mission-critical systems. - **Fast Response Time:** Engineered to react quickly to overcurrent events, the TLS025LB minimizes the risk of damage to sensitive telecom components such as routers, switches, and DSLAMs, reducing costly downtime and maintenance. - **Compliance and Trust:** Littelfuse is a globally recognized leader in circuit protection, and the TLS025LB adheres to telecom industry standards, including UL and IEC certifications, ensuring compatibility with a wide range of telecom equipment. **Typical Applications:** The TLS025LB is ideal for protecting telecom infrastructure in applications such as: - **Central Office Equipment:** Safeguarding power distribution units and line cards in telecommunications central offices. - **Data Centers:** Providing reliable overcurrent protection for networking hardware, servers, and power supplies in high-density data center environments. - **Network Switching Systems:** Ensuring the integrity of Ethernet switches, routers, and optical network terminals (ONTs) in enterprise and service provider networks. - **Wireless Infrastructure:** Protecting base stations, small cells, and distributed antenna systems (DAS) from transient overcurrent events. - **Customer Premises Equipment (CPE):** Shielding DSL modems, cable modems, and VoIP devices from power surges and faults. **Why Choose Littelfuse?** Littelfuse has been a pioneer in circuit protection for over a century, earning the trust of engineers and technicians worldwide. The TLS025LB exemplifies the company’s commitment to innovation, quality, and reliability, making it the preferred choice for telecom professionals who demand uncompromising performance. Whether deployed in legacy systems or next-generation networks, this fuse provides the peace of mind that comes from using a product backed by a manufacturer with a proven track record in protecting critical infrastructure. **Installation and Selection Considerations:** When selecting a telecommunications fuse like the TLS025LB, professionals must consider factors such as ambient operating temperature, expected load conditions, and compliance with local regulatory standards. Littelfuse provides comprehensive technical documentation, including datasheets and application notes, to assist engineers in optimizing fuse selection for their specific telecom environments. For added convenience, the TLS025LB is available in industry-standard package sizes, ensuring seamless integration with existing telecom equipment. By choosing the **Littelfuse TLS025LB 25A Telecommunications Fuse**, telecom operators and equipment manufacturers can enhance the reliability and longevity of their systems, reduce maintenance costs, and ensure uninterrupted service for end-users.
  • 25A ampere rating for precise telecom circuit protection
  • High reliability with fast response to overcurrent events
  • Compact, robust design for easy integration into telecom equipment
  • Compliant with UL and IEC standards for global telecom applications
  • Trusted by professionals for critical infrastructure protection

Specifications

Application
Telecommunications
Brand Name
Littelfuse
Current Rating
25 A
Series
TLS
Size
Compact
Special Features
Multiple mounting configurations
Sub Brand
TLS Series
Type
Current Limiting
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

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.