Littelfuse H326.250P - SLO-BLO CERAMIC FUSE H-PACK .250A. The 3AB Slo-Blo® Fuse with ceramic body construction permits higher interrupting ratings and voltage ratings. Ideal for applications where high current loads are expected. Features: In accordance with UL Standard 248-14. Available in cartridge and axial lead format and with various forming dimensions. RoHS compliant and Lead-free.
Littelfuse

H326.250P

Alternate Item Number: 0326.250HXP

UPC: 079458924985


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Minimum Qty: 100

Multiplier: 100

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Overview

The **Littelfuse H326.250P Slo-Blo Ceramic Fuse** is a high-performance, UL 248-14 compliant overcurrent protection solution engineered for demanding industrial and commercial applications. Designed with a robust ceramic body, this fuse delivers superior interrupting ratings and voltage handling, making it an ideal choice for environments where high current loads and transient surges are common. Whether deployed in power distribution systems, motor controls, or sensitive electronic circuits, the H326.250P ensures reliable protection against overloads while maintaining operational integrity. **Key Features and Benefits:** - **Ceramic Construction for Enhanced Durability:** The ceramic body of the H326.250P provides exceptional thermal stability and mechanical strength, allowing it to withstand harsh operating conditions. This construction is particularly advantageous in high-temperature environments or applications exposed to vibration and mechanical stress. - **High Interrupting Ratings:** Engineered to safely interrupt high fault currents, the Slo-Blo ceramic fuse prevents catastrophic damage to downstream equipment. Its design aligns with UL 248-14 standards, ensuring compliance with rigorous safety and performance benchmarks. - **Versatile Form Factors:** Available in both cartridge and axial lead configurations, the H326.250P offers flexibility in installation. This adaptability simplifies integration into existing systems, whether in new designs or retrofits, and supports a wide range of mounting options. - **RoHS-Compliant and Lead-Free:** Meeting global environmental standards, the fuse is manufactured without hazardous substances, making it suitable for use in applications where regulatory compliance is critical. This also ensures compatibility with modern, eco-conscious manufacturing processes. - **Precise Current Rating:** With a rated current of 0.250A, the H326.250P provides targeted protection for sensitive components, preventing nuisance tripping while ensuring rapid response to overcurrent events. This precision is essential in applications such as power supplies, control panels, and instrumentation. **Typical Applications:** The Littelfuse H326.250P Slo-Blo Ceramic Fuse is widely used across multiple industries, including: - **Industrial Automation:** Protecting PLCs, sensors, and motor drives from transient surges and overloads. - **Power Distribution:** Safeguarding transformers, circuit breakers, and distribution panels in commercial and utility settings. - **Telecommunications:** Ensuring reliable operation of network equipment, routers, and base stations by preventing damage from voltage spikes. - **Automotive and Transportation:** Used in vehicle charging systems, control modules, and lighting circuits where reliability is paramount. - **Consumer Electronics:** Providing overcurrent protection in power adapters, chargers, and household appliances. **Why Choose Littelfuse?** Littelfuse is a globally recognized leader in circuit protection, with over a century of innovation and expertise. The company’s Slo-Blo series, including the H326.250P, is trusted by engineers and technicians worldwide for its consistent performance, durability, and adherence to international safety standards. By selecting Littelfuse, professionals gain access to a product backed by extensive testing, technical support, and a reputation for reliability in critical applications. **Installation and Selection Considerations:** When integrating the H326.250P into a system, professionals should evaluate the following: - **Voltage and Current Ratings:** Ensure the fuse’s ratings match the application’s requirements to avoid under- or over-protection. - **Mounting Configuration:** Select the appropriate form factor (cartridge or axial lead) based on the available space and mounting hardware. - **Environmental Conditions:** Consider operating temperature, humidity, and exposure to contaminants to maximize fuse longevity. - **Compliance Requirements:** Verify that the fuse meets local and international standards, such as UL, CE, or IEC, for seamless integration into certified systems. The **Littelfuse H326.250P Slo-Blo Ceramic Fuse** is more than just a protective component—it is a critical safeguard for systems where reliability and safety cannot be compromised. With its robust design, compliance with industry standards, and versatile form factors, it stands as a dependable solution for engineers and technicians seeking to enhance the longevity and performance of their electrical and electronic systems.
  • Ceramic body construction for superior thermal and mechanical stability
  • High interrupting ratings for reliable fault current interruption
  • UL 248-14 compliant for safety and performance assurance
  • Available in cartridge and axial lead formats for versatile installation
  • RoHS-compliant and lead-free for environmental and regulatory compliance

Specifications

Amperage Rating
.250 Amps
Application
electronic equipment & appliances
Brand Name
Littelfuse
Connection Type
Cartridge, Axial Lead
Current Rating
0.250 A
Material
Ceramic
Mounting Type
Cartridge, Axial Lead
Series
SLO-BLO
Series
3AB Slo-Blo
Special Features
Slo-Blo
Standard
UL Standard 248-14
Sub Brand
326 Series
Type
3AB Slo-Blo
Package Dimensions (L x W x H)
1.25 IN x 0.25 IN x 0.25 IN
Package Dimensions (L x W x H)
3.175 cm x 6.35 mm x 6.35 mm
Package Weight (Imperial)
0.150 L
Package Weight (Metric)
0.068 kg
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9F61 Size B Clips 1.6in

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9F61 Size B Clips 1.6in
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.