Littelfuse 0239.700MXEP - SLO-BLO GLASS BODY M-PACK .700A 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

0239.700MXEP

UPC: 079458909531


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Overview

The **Littelfuse 0239.700MXEP 5x20mm 0.7A SLO-BLO Glass Cartridge Fuse** delivers unmatched overcurrent protection for sensitive electronic circuits, combining precision time-lag performance with robust reliability. Designed to meet the stringent **UL/CSA/ANCE 248 standards**, this RoHS-compliant and lead-free fuse is engineered for applications where controlled current interruption is critical to prevent damage to delicate components. With its **axial lead design**, the 0239.700MXEP ensures easy installation in tight spaces, making it an ideal choice for industrial, automotive, and consumer electronics where space constraints and performance demands intersect. **Key Features & Benefits:** - **Precision Time-Lag Protection:** The SLO-BLO (slow-blow) characteristic allows brief current surges—common in startup or transient conditions—while providing reliable interruption during sustained overcurrent events. This prevents nuisance tripping in applications like power supplies, motor circuits, and transformers, where temporary overloads are expected but sustained faults must be mitigated. - **Glass Body Construction:** The **5x20mm glass cartridge** design offers excellent visibility for visual inspection of fuse integrity and arc suppression, ensuring quick fault diagnosis. Glass bodies also provide superior thermal performance and durability compared to plastic alternatives, making them a preferred choice in high-vibration or harsh environments. - **Axial Lead Configuration:** The axial lead design simplifies mounting in printed circuit boards (PCBs) and chassis-mounted applications, reducing assembly time and improving reliability. This format is particularly advantageous in compact electronic devices where space is at a premium, such as in telecommunications equipment, LED drivers, and industrial control systems. - **Compliance & Environmental Standards:** Fully compliant with **UL/CSA/ANCE 248**, this fuse meets global safety and performance benchmarks. Its **RoHS and lead-free** construction aligns with modern environmental regulations, ensuring compatibility with green manufacturing initiatives and reducing hazardous material risks in end-of-life disposal. - **Versatile Applications:** From **industrial automation** and **automotive electronics** to **telecom infrastructure** and **medical devices**, the 0239.700MXEP is trusted for protecting sensitive circuits against overcurrent conditions. Typical use cases include power distribution units (PDUs), motor controllers, battery management systems, and instrumentation panels where reliable fault interruption is non-negotiable. **Why Choose Littelfuse for Circuit Protection?** Littelfuse is a globally recognized leader in circuit protection, with over a century of innovation in fuse technology. The company’s **SLO-BLO series** is renowned for its ability to balance fast-acting and time-lag performance, making it a go-to solution for engineers designing for real-world operating conditions. Whether you’re protecting a high-inrush motor circuit or a delicate sensor network, Littelfuse’s rigorous testing and adherence to international standards ensure consistent, predictable performance. **Installation & Selection Considerations:** When selecting a fuse for your application, consider the **nominal current rating (0.7A)**, **voltage rating**, and **interrupting capacity** to match the circuit’s requirements. The **5x20mm axial format** is compatible with standard fuse holders and clips, but always verify dimensional compatibility with your enclosure or PCB layout. For high-reliability applications, pair this fuse with Littelfuse’s **fuse holders and accessories** to ensure secure mounting and easy replacement. Regular inspection of the fuse element—visible through the glass body—can help identify potential issues before they lead to failures. **Industry Trust, Proven Performance:** The 0239.700MXEP is a testament to Littelfuse’s commitment to quality and innovation in circuit protection. Used by engineers in **aerospace, renewable energy, and consumer electronics**, this fuse exemplifies the balance between performance, safety, and sustainability. By choosing Littelfuse, you’re not just selecting a fuse—you’re investing in a solution backed by decades of expertise and a reputation for reliability in the most demanding applications.
  • 0.7A nominal current rating with SLO-BLO (slow-blow) time-lag performance
  • 5x20mm glass body cartridge for visibility and thermal durability
  • Axial lead design for easy PCB and chassis mounting
  • UL/CSA/ANCE 248 compliant and RoHS/lead-free compliant
  • Ideal for industrial automation, automotive electronics, and sensitive circuits

Specifications

Application
electronic equipment & appliances
Brand Name
Littelfuse
Connection Type
Axial Lead
Current Rating
0.700 A
Current Rating
0.7 A
Material
Glass
Mounting Type
Cartridge
Series
SLO-BLO
Size
5x20mm
Special Features
Slo-Blo
Standard
UL/CSA/ANCE 248 Standard
Sub Brand
239 Series
Type
5 x 20 mm UL/CSA Slo-Blo
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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.

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.