Littelfuse LTFD101-1B - 80VDC 125A TLS DISCONNECT
Littelfuse

LTFD101-1B

UPC: 079458830576

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Specification Sheet

Contact for Pricing

Overview

The Littelfuse LTFD101-1B 80VDC 125A TLS Disconnect is a high-performance, industrial-grade disconnect switch engineered for reliable power isolation in demanding applications. Designed to handle up to 80VDC and 125A of continuous current, this disconnect switch delivers robust performance in environments where safety, durability, and efficiency are critical. Whether deployed in renewable energy systems, telecom infrastructure, industrial automation, or heavy-duty machinery, the LTFD101-1B ensures seamless operation under heavy loads while maintaining compliance with stringent industry standards. Engineered with Littelfuse’s legacy of innovation and reliability, the LTFD101-1B features a compact yet durable design that simplifies installation and maintenance without compromising on performance. Its high current rating and voltage handling capability make it an ideal solution for power distribution panels, battery management systems, and solar/wind energy installations. The TLS (Twin-Lever Switch) mechanism provides quick and secure disconnection, reducing downtime during maintenance or emergency shutdowns. Additionally, the switch’s robust construction ensures long-term operation in harsh industrial environments, including those with high vibration, temperature fluctuations, or exposure to contaminants. Selecting the right disconnect switch is essential for ensuring operational safety and system integrity. Professionals in renewable energy, telecommunications, and industrial automation rely on Littelfuse’s TLS disconnects for their proven reliability and ease of use. The LTFD101-1B is particularly well-suited for: - **Renewable Energy Systems**: Safely isolate solar arrays, wind turbines, and battery storage systems during maintenance or fault conditions. - **Telecom Infrastructure**: Protect sensitive equipment in data centers and cell towers by providing a reliable power cutoff mechanism. - **Industrial Automation**: Manage power distribution in manufacturing plants, ensuring safe and efficient operation of machinery and control systems. - **Heavy-Duty Machinery**: Enable quick disconnection in high-current applications such as electric vehicles, material handling equipment, and power tools. Littelfuse’s reputation for quality and innovation makes the LTFD101-1B a trusted choice for engineers and technicians who demand dependable power management solutions. With a focus on safety, durability, and performance, this disconnect switch is designed to meet the rigorous demands of modern industrial applications. Whether you’re upgrading an existing system or designing a new one, the LTFD101-1B provides the reliability and efficiency required to keep operations running smoothly. Trust Littelfuse to deliver power management solutions that exceed industry standards and exceed your expectations.
  • 80VDC and 125A continuous current rating for heavy-duty applications
  • Twin-Lever Switch (TLS) mechanism for quick and secure disconnection
  • Compact design for easy installation and maintenance
  • Built for harsh industrial environments with high vibration and temperature fluctuations
  • Ideal for renewable energy, telecom, and industrial automation systems

Specifications

Current Rating
125 A
Series
LTFD101
Voltage Rating
80 VDC
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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.