Littelfuse 239001EP - SLO-BLO GLASS BODY 1A AXIAL. 5x20mm time-Lag glass body cartridge fuse designed to JL specification. Features: Designed to UL/CSA/ANCE 248 Standard. Available in cartridge and axial lead format RoHS compliant and lead-free.
Littelfuse

239001EP

Alternate Item Number: 0239001.VXEP

UPC: 079458910988

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Overview

The Littelfuse 239001EP SLO-BLO 1A Axial Glass Body Fuse is a critical component for reliable overcurrent protection in demanding industrial and electronic environments. Engineered by Littelfuse, a globally recognized leader in circuit protection, this fuse (SKU: 239001EP) is designed to meet stringent safety and performance standards, including UL, CSA, and ANCE 248 specifications. Its robust glass body construction ensures durability and visual inspection capabilities, while the 5x20mm form factor and axial lead configuration offer versatile integration into a wide array of equipment. This time-lag fuse is specifically designed to withstand temporary inrush currents without nuisance tripping, a crucial characteristic for protecting sensitive electronic components and machinery. The time-lag (or slow-blow) functionality allows for brief overcurrents, common during equipment startup or transient events, to pass without interrupting operation. However, it will reliably interrupt sustained overcurrents that pose a risk of damage or fire. This makes the SLO-BLO fuse an ideal choice for applications such as power supplies, control panels, industrial automation equipment, medical devices, and consumer electronics where component longevity and operational stability are paramount. Key features and benefits of the Littelfuse 239001EP include: * **UL/CSA/ANCE 248 Compliance:** Adheres to rigorous international safety standards, ensuring dependable performance and safety. * **Time-Lag Operation:** Protects against transient overcurrents while providing reliable interruption of sustained faults. * **Durable Glass Body:** Offers excellent dielectric strength and allows for easy visual inspection of the fuse element. * **Axial Lead Format:** Facilitates straightforward mounting and soldering in printed circuit boards and other assemblies. * **5x20mm Standard Size:** Compatible with a vast range of fuse holders and sockets. * **RoHS Compliant and Lead-Free:** Meets environmental regulations, making it suitable for global markets and eco-conscious designs. Littelfuse's commitment to quality and innovation is evident in the SLO-BLO series. Professionals rely on Littelfuse fuses for their consistent performance, precise tripping characteristics, and long service life. The 239001EP fuse is an essential part of a comprehensive circuit protection strategy, safeguarding valuable equipment and ensuring operational continuity. Its application extends across diverse industries, including telecommunications, automotive, industrial controls, and general electronics manufacturing. When selecting fuses, engineers and technicians prioritize reliability, compliance, and performance, all of which are hallmarks of this Littelfuse SLO-BLO fuse. Its precise current rating and time-delay characteristics are critical for preventing costly downtime and equipment failures. The lead-free and RoHS-compliant nature further enhances its appeal for modern manufacturing processes and international distribution.
  • Littelfuse SLO-BLO 1A Axial Glass Body Fuse (SKU: 239001EP)
  • 5x20mm time-lag cartridge fuse designed to JL specification
  • Meets UL/CSA/ANCE 248 safety standards for reliable protection
  • Features a durable glass body and axial lead format for versatile integration
  • RoHS compliant and lead-free for environmental responsibility

Specifications

Amperage Rating
350 Amps
Application
General Purpose
Brand Name
Littelfuse
Connection Type
Axial Lead
Current Rating
1 A
Material
Glass
Series
239001
Size
5x20mm
Special Features
Fast-Acting
Standard
Standard 248-8 UL Listed/CSA
Sub Brand
POWR-GARD JLS Series
Type
Class J
JLS060 is a Class J fuse with an ampere rating of 60 and cartridge-style construction.

JLS060

JLS060 is a Class J fuse with an ampere rating of 60 and cartridge-style construction.
JLS500 is a Class J fuse with an ampere rating of 500 and knife-blade-style construction.

JLS500

JLS500 is a Class J fuse with an ampere rating of 500 and knife-blade-style construction.

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.