Littelfuse H229005SP - H229 SLO-BLO GLASS INDICATOR H-PACK 6A. The 2AG Slo-Blo® Fuses are available in cartridge form or with axial leads. 2AG Fuses providing the same performance characteristics as their 3AG counterpart, while occupying one-third the space. Features: 229 series 2AG fuses have time-delay of 313 series 3AG fuses in less than one-third of the space. They provide superior protection for inductive loads such as motors, transformers, and solenoids. Use whenever time-delay fuses are indicated. An indicating version is also available. 2AG indicating fuses instantly identify themselves upon opening by showing a discoloration of their glass bodies. Guesswork and time-consuming circuit testing is eliminated. This unique design offers the same quality performance characteristics as the standard 2AG fuse design.
Littelfuse

H229005SP

Alternate Item Number: 0229005.HXSP

UPC: 079458914993


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Multiplier: 100

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Overview

The Littelfuse H229005SP 6A 2AG Slo-Blo® Glass Indicator Fuse is a high-performance, time-delay fuse engineered for superior protection of inductive loads such as motors, transformers, solenoids, and other heavy-starting equipment. As part of the 229 series, this fuse delivers the same reliable performance as traditional 3AG fuses but in a significantly more compact form factor—occupying less than one-third the space. This space-saving design makes it ideal for modern, densely packed electrical panels and control systems where every millimeter counts without compromising on protection or reliability. Time-delay fuses like the H229005SP are specifically designed to handle temporary current surges common in inductive loads. Unlike standard fast-acting fuses, these Slo-Blo® fuses allow brief overloads during startup or transient conditions, preventing nuisance tripping while still providing robust protection against sustained overcurrents. The 6-amp rating ensures compatibility with a wide range of low-to-medium power applications, making it a versatile choice for engineers and technicians across industries including industrial automation, HVAC systems, power distribution, and renewable energy installations. One of the standout features of the H229005SP is its indicating capability. The glass body discolors upon fuse opening, providing an immediate visual indication that the fuse has blown. This eliminates the need for time-consuming circuit testing or troubleshooting, significantly reducing downtime in critical applications. In high-reliability environments such as manufacturing plants, data centers, or medical equipment, this feature can mean the difference between a quick repair and costly production delays. The 2AG form factor (also known as 2AG or 5x20mm) is a global standard for miniature fuses, ensuring broad compatibility with existing fuse holders and panels. This standardization simplifies inventory management and reduces the need for custom components, streamlining procurement and maintenance processes. Whether used in original equipment manufacturing (OEM) applications or as a replacement in legacy systems, the H229005SP offers a reliable, off-the-shelf solution that meets stringent safety and performance requirements. Littelfuse, a trusted name in circuit protection for over a century, designs its Slo-Blo® fuses to meet rigorous industry standards, including UL, CSA, and IEC certifications. The company’s commitment to innovation and quality has made it a preferred partner for engineers worldwide. With a global distribution network and dedicated technical support, Littelfuse ensures that professionals have access to the right protection solutions, exactly when and where they’re needed. For applications requiring time-delay fuse protection in compact spaces, the Littelfuse H229005SP 6A 2AG Slo-Blo® Glass Indicator Fuse is the smart choice. Its combination of space efficiency, indicating functionality, and trusted performance makes it an essential component for protecting sensitive inductive loads while minimizing downtime and maintenance costs.
  • 6A time-delay fuse for inductive load protection (motors, transformers, solenoids)
  • Compact 2AG (5x20mm) form factor—occupies one-third the space of 3AG fuses
  • Glass indicator body discolors upon opening for instant blown-fuse identification
  • Designed for temporary surge tolerance during startup or transient conditions
  • UL, CSA, and IEC certified for global compatibility and reliability

Specifications

Amperage Rating
5 AMPS
Application
Telecom
Brand Name
Littelfuse
Connection Type
Axial leads / Cartridge
Current Rating
6 A
Material
Glass
Series
229
Series
229 series
Size
2AG
Size
2AG (5x20mm)
Special Features
Fuse with Indicating Option
Standard
UL Standard 248-14
Sub Brand
229 Series
Type
Slo Blo
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

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Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

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Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

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9F61 Size B Clips 1.6in

9F61BWW460

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

What technical support resources does Littelfuse offer?

Littelfuse offers a Techline with technical experts who can provide product cross references, general technical information, engineering drawings, and application assistance. They can be contacted at 1-800-TEC-FUSE or [email protected].

What types of technical products does Littelfuse manufacture?

Littelfuse manufactures a wide range of industrial electrical protection products including UL Class fuses, high-speed fuses, medium voltage fuses, solar fuses, fuse blocks, protection relays, ground-fault protection relays, and motor protection devices.

How can distributors access Littelfuse product information?

Distributors can access product information through multiple resources including Littelfuse University, Digital Marketing Assets portal, RepFiles mobile app, and the Littelfuse Business Center website.

How can distributors order Littelfuse literature and materials?

Distributors can order print literature and marketing materials directly through the Littelfuse Business Center or by contacting their local sales representative. Digital copies can be downloaded from the Littelfuse Digital Asset portal.

What marketing support does Littelfuse provide to distributors?

Littelfuse offers a Marketing to Marketing program that includes co-branded email campaigns, content sharing, marketing tool training, product launch support, and website linking to help distributors grow sales.

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.