Littelfuse H229004P - SLO-BLO TYPE GLASS FUSE H-PACK 4A. 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

H229004P

Alternate Item Number: 0229004.HXP

UPC: 079458915518

Documents & Media
BrochureTechnical BulletinSpecification Sheet

Contact for Pricing

Minimum Qty: 100

Multiplier: 100

*Contact for lower quantities*

Overview

The Littelfuse H229004P, a high-performance 229 series 2AG fuse, is engineered to provide superior time-delay protection for demanding industrial applications. This 4A rated glass fuse, identified by SKU H229004P, is a critical component for safeguarding inductive loads such as motors, transformers, and solenoids from damaging overcurrents and transient surges. Its compact 2AG form factor is a significant advantage, offering the same robust time-delay performance as larger 3AG fuses while occupying less than one-third of the space. This space-saving design is invaluable in modern, densely packed electrical enclosures and equipment where component real estate is at a premium. Littelfuse, a globally recognized leader in circuit protection, has designed the 229 series to meet the stringent requirements of industrial environments. The time-delay characteristic is crucial for applications where temporary inrush currents are normal, such as motor start-up, preventing nuisance tripping while still offering effective protection against sustained overloads. This fuse is the ideal choice whenever time-delay fuse protection is specified in equipment designs and maintenance schedules. A standout feature of the 2AG series, including the H229004P, is the availability of an indicating version. This innovative design instantly signals a blown fuse through a visible discoloration of the glass body. This eliminates the need for time-consuming and often ambiguous circuit testing, allowing maintenance personnel to quickly identify and replace faulty fuses, thereby minimizing downtime and restoring operational efficiency. The indicating functionality maintains the same high-quality performance standards as the non-indicating 2AG fuses, ensuring reliable circuit protection. Key features and benefits of the Littelfuse H229004P include: * **Compact 2AG Form Factor:** Delivers 3AG fuse performance in a significantly smaller footprint, ideal for space-constrained designs. * **Time-Delay Protection:** Specifically designed to handle temporary inrush currents common in inductive loads without nuisance tripping. * **Superior Inductive Load Protection:** Offers enhanced safeguarding for motors, transformers, solenoids, and other inductive components. * **High Reliability:** Manufactured by Littelfuse, a trusted name synonymous with quality and dependable circuit protection solutions. * **Indicating Option Available:** Simplifies troubleshooting and reduces downtime with visual indication of a blown fuse. * **Versatile Configuration:** Available in both cartridge form and with axial leads, offering flexibility in mounting and integration. When selecting fuses for critical industrial systems, the Littelfuse H229004P stands out for its combination of advanced technology, space efficiency, and reliable performance. Its ability to protect sensitive inductive components and facilitate rapid fault identification makes it an indispensable part of any robust electrical protection strategy. Trust Littelfuse for your circuit protection needs, ensuring the longevity and operational integrity of your valuable equipment.
  • Littelfuse 229 Series 2AG Time-Delay Glass Fuse
  • 4 Ampere (4A) current rating for versatile protection
  • Compact design offers 3AG performance in less than one-third the space
  • Ideal for protecting inductive loads like motors, transformers, and solenoids
  • Available in cartridge form or with axial leads for flexible integration

Specifications

Amperage Rating
4 Amps
Application
Telecom
Brand Name
Littelfuse
Color
Clear
Connection Type
Axial Leads or Cartridge
Current Rating
4 A
Material
Glass
Series
229
Size
2AG
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

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

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

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

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.