Littelfuse L60S070 - The L60S and KLC series is a traditional North American style high-speed fuse for protection of power semiconductor devices that are rated up to 600 V ac. These fuse series are typically used for replacement purposes only. For new designs L70QS series is recommended.
Littelfuse

L60S070

Alternate Item Number: L60S070.V

UPC: 079458101195


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Overview

The Littelfuse L60S series, including the L60S070, is a high-speed fuse designed for the protection of power semiconductor devices in various industrial applications. This fuse is rated for 600V AC operation, providing reliable overcurrent protection. The L60S series is a traditional North American style fuse, typically used for replacement purposes within existing systems. It is crucial to note that for new designs, Littelfuse recommends the L70QS series for optimal performance and advanced features. The L60S series offers a proven solution for safeguarding critical components in applications where fast-acting protection is paramount. This fuse is engineered to quickly interrupt fault currents, minimizing damage to sensitive semiconductor devices and reducing downtime. When selecting a replacement fuse, ensure the L60S series meets the required voltage and current ratings for your specific application. Always consult the manufacturer's specifications and application notes for proper installation and operation. The L60S series from Littelfuse provides a dependable and cost-effective solution for maintaining the integrity and longevity of your power systems.
  • Designed for protection of power semiconductor devices
  • 600V AC voltage rating
  • High-speed, fast-acting fuse
  • Traditional North American style
  • Suitable for replacement applications

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
L60S Series
Type
Semiconductor Fuse
Package Weight (Imperial)
0.238 L
Package Weight (Metric)
0.108 kg
The Littelfuse LA60X semiconductor protection fuses are popular for the protection of higher voltage heavy rectifiers such as traction rectifiers.  They can carry long sustained overloads common with heavy-duty apparatus.  The compact hockey-puck; design provides high power protection in a small space. Features: Lowest l2t minimizes damage to protected components on short circuit. Controlled arc voltage reduces stress to circuit components during fuse clearing. Applications: Protection of heavy traction and electrochemical as well as rectifiers and other heavy-duty equipment.

LA60X1200-128

The Littelfuse LA60X semiconductor protection fuses are popular for the protection of higher voltage heavy rectifiers such as traction rectifiers. They can carry long sustained overloads common with heavy-duty apparatus. The compact hockey-puck; design provides high power protection in a small space. Features: Lowest l2t minimizes damage to protected components on short circuit. Controlled arc voltage reduces stress to circuit components during fuse clearing. Applications: Protection of heavy traction and electrochemical as well as rectifiers and other heavy-duty equipment.
Littelfuse French Cylindrical style semiconductor fuses are an extension to the LA70QS series.  They offer a solid-fill design with high interrupting ratings and an optional striker for visual or remote blown fuse indication.  The international 14 x 51mm and 22 x 58mm sizes are accepted worldwide.

LA70QS40-14F

Littelfuse French Cylindrical style semiconductor fuses are an extension to the LA70QS series. They offer a solid-fill design with high interrupting ratings and an optional striker for visual or remote blown fuse indication. The international 14 x 51mm and 22 x 58mm sizes are accepted worldwide.
Littelfuse French Cylindrical style semiconductor fuses are an extension to the LA70QS series.  They offer a solid-fill design with high interrupting ratings and an optional striker for visual or remote blown fuse indication.  The international 14 x 51mm and 22 x 58mm sizes are accepted worldwide.

LA70QS50-14FI

Littelfuse French Cylindrical style semiconductor fuses are an extension to the LA70QS series. They offer a solid-fill design with high interrupting ratings and an optional striker for visual or remote blown fuse indication. The international 14 x 51mm and 22 x 58mm sizes are accepted worldwide.
Littelfuse French Cylindrical style semiconductor fuses are an extension to the LA70QS series.  They offer a solid-fill design with high interrupting ratings and an optional striker for visual or remote blown fuse indication.  The international 14 x 51mm and 22 x 58mm sizes are accepted worldwide.

LA70QS50-14F

Littelfuse French Cylindrical style semiconductor fuses are an extension to the LA70QS series. They offer a solid-fill design with high interrupting ratings and an optional striker for visual or remote blown fuse indication. The international 14 x 51mm and 22 x 58mm sizes are accepted worldwide.
Littelfuse French Cylindrical style semiconductor fuses are an extension to the LA70QS series.  They offer a solid-fill design with high interrupting ratings and an optional striker for visual or remote blown fuse indication.  The international 14 x 51mm and 22 x 58mm sizes are accepted worldwide.

LA70QS20-22FI

Littelfuse French Cylindrical style semiconductor fuses are an extension to the LA70QS series. They offer a solid-fill design with high interrupting ratings and an optional striker for visual or remote blown fuse indication. The international 14 x 51mm and 22 x 58mm sizes are accepted worldwide.

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.