Littelfuse 230005SP - SLO-BLO TYPE GLASS INDICATOR 5A. 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

230005SP

Alternate Item Number: 0230005.VXSP

UPC: 079458918717

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Minimum Qty: 5

Multiplier: 5

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Overview

The **Littelfuse 230005SP 5A Slo-Blo Type G Glass Indicator Fuse** is a high-performance, time-delay fuse engineered for superior protection of inductive loads in compact industrial and commercial applications. Part of Littelfuse’s renowned **229 Series 2AG** family, this fuse delivers the same reliable time-delay characteristics as larger 3AG fuses while occupying **less than one-third the space**, making it an ideal solution for space-constrained panels and equipment. Available in both **cartridge and axial lead configurations**, the 230005SP ensures versatile installation options to meet diverse circuit design requirements. Designed to protect sensitive inductive loads such as **motors, transformers, solenoids, and power supplies**, the 230005SP excels in environments where transient inrush currents are common. Unlike standard fast-acting fuses, time-delay fuses like the Slo-Blo provide temporary overcurrent tolerance, preventing nuisance openings while still safeguarding critical components from sustained overloads. This makes them particularly valuable in applications where startup surges or intermittent high-current events occur, such as in HVAC systems, industrial machinery, and renewable energy inverters. A standout feature of the **230005SP is its indicating design**, which simplifies troubleshooting by visibly discoloring the glass body upon fuse opening. This eliminates the need for time-consuming circuit testing or guesswork, reducing downtime and maintenance costs in mission-critical systems. The indicating version is especially beneficial in high-reliability applications, such as telecommunications, medical equipment, and automation control panels, where rapid fault identification is essential. Littelfuse, a global leader in circuit protection solutions, has built a reputation for reliability and innovation since its founding in 1927. The **229 Series 2AG fuses** are trusted by engineers and technicians worldwide for their **consistent performance, durability, and compliance with industry standards** (e.g., UL, CSA, and IEC). Whether used in original equipment manufacturing (OEM) or aftermarket applications, these fuses are a preferred choice for professionals seeking a balance of **compact size, high performance, and ease of use**. **Key Applications:** - **Motor starters and drives** – Protects against startup inrush currents while ensuring overload protection. - **Transformers and power supplies** – Safeguards against secondary faults and transient spikes. - **Solenoids and relays** – Prevents damage from inductive kickback during switching. - **HVAC systems** – Handles compressor and fan motor surge currents reliably. - **Industrial automation** – Ideal for PLCs, sensors, and control circuits requiring time-delay protection. **Installation and Selection Considerations:** When selecting a time-delay fuse like the **230005SP**, professionals should evaluate the **peak inrush current, ambient temperature, and voltage rating** of the application. Littelfuse’s 2AG fuses are designed to operate efficiently in environments ranging from **-55°C to +125°C**, ensuring stability in extreme conditions. For optimal performance, always match the fuse’s **voltage rating (e.g., 250V AC/DC)** and **interrupting rating** to the system requirements. The axial lead configuration is particularly useful for **through-hole PCB mounting**, while the cartridge style is suited for fuse blocks and panel installations. **Why Choose Littelfuse?** With over **90 years of expertise**, Littelfuse is a trusted partner for engineers and procurement teams seeking **high-quality, certified circuit protection solutions**. The company’s global manufacturing footprint and rigorous quality control processes ensure consistent performance across all product lines. The **230005SP Slo-Blo Type G Glass Indicator Fuse** exemplifies Littelfuse’s commitment to innovation, offering a **compact, high-reliability solution** that enhances system safety and uptime. Backed by comprehensive technical support and a vast distribution network, Littelfuse fuses are a smart investment for any application requiring **precision protection and ease of maintenance**.
  • 5A time-delay fuse for superior protection of inductive loads (motors, transformers, solenoids)
  • Compact 2AG design occupies one-third the space of 3AG fuses while delivering identical performance
  • Available in cartridge or axial lead configurations for versatile installation options
  • Indicating glass body discolors upon opening for instant fault identification and reduced downtime
  • Trusted Littelfuse quality with compliance to UL, CSA, and IEC standards for industrial reliability

Specifications

Amperage Rating
600 Amps
Application
Non-Inductive Loads
Brand Name
Littelfuse
Color
Clear (with discoloration upon opening)
Color
Clear
Color
Clear/Glass
Connection Type
Cartridge/Axial Leads
Connection Type
Axial Lead / Cartridge
Connection Type
Cartridge or Axial Leads
Current Rating
5 A
Material
Glass
Mounting Type
Through-hole PCB / Fuse Block
Mounting Type
PCB/Through-hole
Series
229
Series
229 series
Size
2AG
Size
2AG (5x20mm)
Special Features
Fast-Acting
Standard
Standard 248-12 UL Listed/CSA
Sub Brand
POWR-GARD KLSR Series
Type
Class RK1
Voltage Rating
250 V AC/DC
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.