Littelfuse 239003P - SLO-BLO GLASS BODY FUSE 3A. 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

239003P

Alternate Item Number: 0239003.VXP

UPC: 079458909814


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Overview

The Littelfuse 239003P SLO-BLO 3A 5x20mm time-lag glass body cartridge fuse is a critical component for ensuring the safety and reliability of electronic and industrial equipment. Engineered by Littelfuse, a globally recognized leader in circuit protection, this fuse is designed to provide robust overcurrent protection, safeguarding sensitive circuitry from damage caused by excessive current. Its time-lag characteristic is a key feature, allowing it to withstand temporary inrush currents common in motor startups or power supply energization without nuisance tripping. However, it will reliably interrupt the circuit during sustained overcurrent conditions, preventing catastrophic failures and potential hazards. This fuse adheres to stringent industry standards, including UL, CSA, and ANCE 248, guaranteeing its performance and suitability for a wide range of demanding applications. The 5x20mm cartridge format is a standard size, ensuring compatibility with numerous fuse holders and equipment designs. The glass body construction offers visual indication of fuse status, allowing for quick and easy identification of blown fuses, which is invaluable for maintenance and troubleshooting in busy industrial environments. Key benefits and features of the Littelfuse 239003P include: * **Reliable Overcurrent Protection:** Effectively interrupts circuits when current exceeds safe limits. * **Time-Lag Operation:** Designed to tolerate temporary overloads, minimizing false shutdowns. * **Standard 5x20mm Cartridge Size:** Ensures broad compatibility with existing equipment. * **UL/CSA/ANCE 248 Compliance:** Meets rigorous international safety and performance standards. * **Glass Body Construction:** Facilitates visual inspection for blown fuses. * **RoHS Compliant and Lead-Free:** Supports environmental regulations and healthier manufacturing processes. The Littelfuse 239003P is an excellent choice for applications such as power supplies, motor controls, industrial automation systems, test and measurement equipment, and consumer electronics where dependable circuit protection is paramount. Its availability in both cartridge and axial lead formats further enhances its versatility, catering to diverse design requirements. By selecting Littelfuse, you are choosing a manufacturer with a long-standing reputation for quality, innovation, and unwavering commitment to safety. This fuse, SKU 239003P, exemplifies that commitment, offering peace of mind and operational integrity for your critical systems. Professionals trust Littelfuse for its consistent performance and durable components, making this 3A time-lag fuse a sound investment for any application requiring precise and reliable circuit protection.
  • Littelfuse SLO-BLO 3A 5x20mm time-lag glass body cartridge fuse
  • Designed to UL/CSA/ANCE 248 standards for reliable performance
  • Time-lag characteristic prevents nuisance tripping from inrush currents
  • Glass body allows for easy visual inspection of fuse status
  • RoHS compliant and lead-free for environmentally conscious applications

Specifications

Amperage Rating
250 Amps
Application
Variable Speed Drives
Brand Name
Littelfuse
Connection Type
Cartridge/Axial Lead
Connection Type
Cartridge, Axial Lead
Current Rating
3 A
Material
Glass
Material
Glass, Lead-free
Mounting Type
Fuse Holder, PCB Mounting
Mounting Type
Fuse Holder/PCB Mounting
Series
SLO-BLO
Size
5x20mm
Special Features
Fast-Acting
Standard
248-15 Class T
Sub Brand
POWR-GARD JLLS Series
Type
Class T

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.