Littelfuse H229007P - SLO-BLO TYPE GLASS FUSE H-PACK 7A. 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

H229007P

Alternate Item Number: 0229007.HXP

UPC: 079458915600

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Overview

The **Littelfuse 229 Series 2AG Slo-Blo® Glass Fuse (SKU: H229007P)** is a high-performance, time-delay fuse designed to protect inductive loads in demanding industrial and electronic applications. Engineered by Littelfuse, a global leader in circuit protection solutions, this 7A fuse delivers reliable overcurrent protection while occupying significantly less space than traditional 3AG fuses—less than one-third the volume—without compromising performance. Whether deployed in motors, transformers, solenoids, or other inductive circuits, the 229 Series ensures optimal protection against nuisance tripping while allowing temporary inrush currents typical of startup conditions. This **Slo-Blo® fuse** is part of Littelfuse’s industry-proven 229 Series, which is specifically engineered for applications requiring time-delay characteristics. Unlike standard fast-acting fuses, the Slo-Blo® design incorporates a controlled melting alloy and unique construction that provides a delayed response, allowing brief overloads to pass without interruption. This makes it ideal for protecting sensitive equipment from damage due to transient surges while maintaining circuit integrity during normal operation. Available in both **axial lead and cartridge configurations**, the 229 Series offers installation flexibility to suit a wide range of panel designs and mounting requirements. The axial lead version is particularly well-suited for PCB-mounted applications, while the cartridge style provides robust protection in high-vibration environments such as automotive, aerospace, and industrial machinery. Additionally, Littelfuse offers an **indicating version** of this fuse, which features a unique glass body that discolors upon opening, instantly signaling a blown fuse. This eliminates the need for time-consuming circuit testing and reduces diagnostic downtime in critical systems. Littelfuse’s **2AG Slo-Blo® fuses** are trusted by engineers and technicians across industries including **HVAC, power supplies, telecommunications, automotive electronics, and industrial automation**. Their compact form factor makes them an excellent choice for space-constrained designs, such as in consumer electronics, LED drivers, and battery management systems. The 7A rating ensures compatibility with a broad spectrum of low-to-medium current applications, while the time-delay feature prevents false trips caused by motor startup currents or transformer inrush. When selecting fuses for inductive loads, professionals prioritize **reliability, response time, and physical footprint**. The 229 Series excels in all three areas, offering a proven track record in harsh environments where consistent performance is non-negotiable. Littelfuse’s manufacturing standards—rooted in decades of expertise—ensure that every fuse meets stringent quality controls, including high dielectric strength and consistent breaking capacity. This reliability is further validated by Littelfuse’s global certifications, including **UL, CSA, and CE**, making the 229 Series suitable for both North American and international markets. Installation is straightforward: simply insert the fuse into the appropriate holder or panel mount, ensuring proper polarity and contact alignment. For indicating versions, the discoloration of the glass body upon failure provides immediate visual confirmation, streamlining maintenance and reducing system downtime. Regular inspection and replacement of blown fuses with genuine Littelfuse parts guarantee long-term system integrity and compliance with safety standards. In summary, the **Littelfuse 229 Series 2AG Slo-Blo® Glass Fuse (H229007P)** is a compact, high-performance solution for protecting inductive loads in a variety of industrial and electronic applications. Its time-delay design, space-saving form factor, and optional indicating feature make it a versatile choice for engineers seeking dependable circuit protection without compromise. Backed by Littelfuse’s reputation for innovation and quality, this fuse is a trusted component in millions of installations worldwide.
  • 7A time-delay fuse for inductive load protection
  • Compact 2AG size (1/3 the space of 3AG fuses)
  • Available in axial lead or cartridge configurations
  • Indicating version shows discoloration when blown
  • UL, CSA, and CE certified for global compliance
  • Ideal for motors, transformers, solenoids, and HVAC systems
  • Manufactured by Littelfuse, a leader in circuit protection

Specifications

Amperage Rating
7 Amps
Application
Telecom
Brand Name
Littelfuse
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 Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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
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 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.