Littelfuse 0230.250MXSP - SLO-BLO GLASS INDICATOR M-PACK .250A. 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

0230.250MXSP

UPC: 079458917833


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Minimum Qty: 1000

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Overview

The **Littelfuse 229 Series 2AG Slo-Blo® Glass Indicator Fuse (SKU: 0230.250MXSP)** delivers superior circuit protection for sensitive inductive loads in compact applications. Designed to replace traditional 3AG fuses while occupying one-third the space, this precision fuse combines time-delay performance with instant visual status indication—eliminating guesswork and reducing downtime in critical systems. Engineered for reliability, the **229 Series 2AG Slo-Blo Fuse** is ideal for protecting inductive equipment such as motors, transformers, solenoids, and other high-inrush devices. Its time-delay characteristic allows temporary overloads to pass without nuisance tripping, ensuring continuous operation while safeguarding against damaging fault currents. The **glass indicator design** provides immediate visual confirmation of fuse status upon opening, with a discoloration visible through the transparent body—streamlining maintenance and troubleshooting in industrial, commercial, and OEM applications. **Key Features & Benefits:** - **Space-Saving Design:** Fits in 2AG fuse holders while delivering the performance of a 3AG fuse, optimizing panel space in densely packed enclosures. - **Time-Delay Protection:** Handles temporary overloads common in inductive loads, preventing false trips while maintaining fault protection. - **Visual Indication:** The glass body discolors upon opening, enabling technicians to identify blown fuses instantly without circuit testing. - **High Reliability:** Manufactured by Littelfuse, a global leader in circuit protection, ensuring consistent performance across industrial environments. - **Versatile Mounting:** Available in cartridge form or with axial leads for flexible installation in control panels, machinery, and electrical distribution systems. **Typical Applications:** - **Industrial Machinery:** Protects motors, transformers, and solenoids in CNC machines, conveyors, and automation systems. - **HVAC Systems:** Safeguards compressors and fan motors from overloads and short circuits. - **Power Supplies:** Ideal for sensitive electronic equipment where transient surges are common. - **Renewable Energy:** Used in solar inverters and wind turbine control systems to protect inductive components. - **Automotive & Marine:** Suitable for auxiliary circuits in vehicles and marine equipment where space and reliability are critical. **Why Choose Littelfuse?** With over a century of expertise in circuit protection, Littelfuse designs fuses that meet the rigorous demands of modern industrial applications. The **229 Series 2AG Slo-Blo Fuse** exemplifies this commitment, offering a balance of compact size, precise protection, and ease of maintenance. Professionals trust Littelfuse for its adherence to industry standards (UL, CSA, IEC) and its reputation for durability in harsh operating conditions. **Installation & Selection Considerations:** When specifying fuses for inductive loads, engineers must account for inrush currents and thermal cycling. The **229 Series** is engineered to handle these challenges, but proper sizing is essential. Consult the manufacturer’s datasheet to match the fuse’s amp rating and time-delay characteristics to the load’s requirements. For applications requiring frequent cycling or high ambient temperatures, consider derating the fuse to ensure long-term reliability. **Industry Standards & Compliance:** The 229 Series meets UL 248 and CSA standards for fuses, ensuring compliance with North American safety regulations. Its compact 2AG form factor is widely compatible with standard fuse holders, reducing integration complexity in new and retrofit projects. **Conclusion:** For engineers and technicians seeking a reliable, space-efficient fuse with visual indication, the **Littelfuse 229 Series 2AG Slo-Blo Glass Indicator Fuse** is a superior choice. Its combination of time-delay performance, compact design, and instant status feedback enhances system uptime and simplifies maintenance—making it a trusted solution across industrial, commercial, and OEM applications.
  • 0.250A time-delay fuse for inductive loads (motors, transformers, solenoids)
  • Glass indicator design provides instant visual confirmation of blown fuses
  • Space-saving 2AG form factor (one-third the size of 3AG fuses)
  • Superior protection against temporary overloads without nuisance tripping
  • UL 248 and CSA certified for North American industrial applications

Specifications

Application
electronic equipment & appliances
Brand Name
Littelfuse
Color
Clear
Connection Type
Axial Lead / Cartridge
Current Rating
0.250 A
Material
Glass
Series
229
Series
229 series
Size
2AG
Special Features
Slo-Blo
Standard
UL Standard 248-14
Sub Brand
230 Series
Type
2AG 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.