Littelfuse TOO006 - Littelfuse Plug fuses provide overcurrent protection to general purpose circuits and small motor loads. Edison-base Plug fuses (TOO and TLO series) feature metal threads similar to incandescent lamp bases. Type S Plug fuses (SOO and SLO series) utilize a nonmetallic threaded base and must be used with Type S adapters (SAO series). The National Electrical Code permits Edison base Plug fuses to be used for replacement purposes only. Type S fuses and adapters prevent shunting open fuses and over-fusing.
Littelfuse

TOO006

Alternate Item Number: 0TOO006.Z

UPC: 079458430585

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Overview

The **Littelfuse TOO006 Plug Fuse** delivers robust overcurrent protection for general-purpose circuits and small motor loads, ensuring operational safety and equipment longevity in industrial and commercial environments. Designed with an Edison-base configuration featuring metal threads, this fuse provides a secure, tamper-resistant connection that aligns with electrical safety standards. Unlike Type S fuses, which require nonmetallic adapters to prevent improper installation, the TOO006 is engineered for straightforward replacement applications where compliance with the National Electrical Code (NEC) is critical. Its durable construction resists corrosion and mechanical stress, making it ideal for harsh operating conditions common in manufacturing plants, HVAC systems, and light industrial machinery. **Key Features and Benefits:** - **Reliable Overcurrent Protection:** Safeguards circuits and small motors from overloads, short circuits, and fault currents, preventing costly equipment damage and downtime. - **Edison-Base Design:** Compatible with standard Edison-base fuse holders, ensuring easy installation and compatibility with existing infrastructure. - **Metal Threads for Durability:** The robust metal threading enhances electrical contact and reduces the risk of loose connections, which can lead to arcing or overheating. - **NEC-Compliant Replacement:** Meets NEC requirements for replacement-only applications, providing a compliant solution for retrofitting outdated fuse systems. - **Versatile Applications:** Suitable for a wide range of applications, including control panels, lighting circuits, motors, transformers, and auxiliary equipment in industrial, commercial, and institutional settings. **Industry Applications and Use Cases:** The TOO006 Plug Fuse is widely utilized in sectors where reliable circuit protection is non-negotiable. In **manufacturing facilities**, it protects machinery control circuits, conveyor systems, and auxiliary power feeds. **HVAC contractors** rely on these fuses to safeguard heating and cooling systems, ensuring uninterrupted climate control in commercial buildings. **Electrical contractors** and maintenance teams use the TOO006 for retrofitting older fuse panels, where Edison-base fuses are still permitted for replacement purposes. Its compact size and straightforward installation make it a practical choice for retrofits in tight spaces, such as control cabinets or junction boxes. **Why Choose Littelfuse?** Littelfuse is a global leader in circuit protection, with over a century of innovation and reliability in electrical safety solutions. The company’s fuses, including the TOO006, are trusted by professionals worldwide for their consistent performance, adherence to industry standards, and rigorous quality control. Littelfuse’s engineering expertise ensures that each fuse meets or exceeds UL, CSA, and other regulatory certifications, providing peace of mind in critical applications. Whether you’re maintaining legacy systems or designing new installations, Littelfuse’s plug fuses offer a dependable, cost-effective solution for overcurrent protection. **Installation and Maintenance Considerations:** Proper installation of the TOO006 Plug Fuse begins with verifying compatibility with the fuse holder and ensuring the circuit is de-energized. The metal threads should be inspected for damage or corrosion before insertion to maintain optimal electrical contact. Unlike Type S fuses, which require adapters to prevent shunting or over-fusing, the TOO006 is designed for direct installation in Edison-base holders, simplifying the replacement process. Regular maintenance includes visual inspections for signs of overheating or damage, and periodic testing to confirm the fuse’s integrity. For applications in high-vibration environments, Littelfuse recommends using fuse holders with strain relief to prevent loosening over time. **Selecting the Right Fuse for Your Application:** When choosing a plug fuse, professionals consider factors such as **current rating, voltage rating, interrupting rating, and application type**. The TOO006 is available in various ampere ratings to match specific load requirements, ensuring precise protection without nuisance tripping. For small motor loads, such as fractional horsepower motors, the fuse’s time-delay characteristics help accommodate inrush currents while still providing short-circuit protection. Always consult the manufacturer’s datasheet and local electrical codes to select the appropriate fuse for your system. Littelfuse provides comprehensive technical support and resources to assist in fuse selection, ensuring optimal performance and safety in every installation.
  • Edison-base design with metal threads for secure installation
  • Provides reliable overcurrent protection for general circuits and small motor loads
  • NEC-compliant for replacement applications only
  • Durable construction resists corrosion and mechanical stress
  • Compatible with standard Edison-base fuse holders

Specifications

Application
General purpose circuits and small motor loads
Brand Name
Littelfuse
Special Features
Metal threads
Sub Brand
TOO Series
Type
Time Delay Fuse
Package Weight (Imperial)
0.051 L
Package Weight (Metric)
0.023 kg
Littelfuse Plug fuses provide overcurrent protection to general purpose circuits and small motor loads. Edison-base Plug fuses (TOO and TLO series) feature metal threads similar to incandescent lamp bases. Type S Plug fuses (SOO and SLO series) utilize a nonmetallic threaded base and must be used with Type S adapters (SAO series). The National Electrical Code permits Edison base Plug fuses to be used for replacement purposes only. Type S fuses and adapters prevent shunting open fuses and over-fusing.

TOO6.25

Littelfuse Plug fuses provide overcurrent protection to general purpose circuits and small motor loads. Edison-base Plug fuses (TOO and TLO series) feature metal threads similar to incandescent lamp bases. Type S Plug fuses (SOO and SLO series) utilize a nonmetallic threaded base and must be used with Type S adapters (SAO series). The National Electrical Code permits Edison base Plug fuses to be used for replacement purposes only. Type S fuses and adapters prevent shunting open fuses and over-fusing.
Mersen plug fuses are intended for industrial and residential applications. Non time-delay fuses are available for receptacle and lighting circuits and time-delay fuses for motor loads. For Canadian requirements, a type P fuse is used for non-motor loads and Type D, for electrical heating and cyclical load circuits. Both fuses have low melting-point temperature elements. Type S plug fuses are time-delay and tamper resistant. 125 Volts 15 Amps GP series. 125 Volts 20 Amps GTL series.

GTL20

Mersen plug fuses are intended for industrial and residential applications. Non time-delay fuses are available for receptacle and lighting circuits and time-delay fuses for motor loads. For Canadian requirements, a type P fuse is used for non-motor loads and Type D, for electrical heating and cyclical load circuits. Both fuses have low melting-point temperature elements. Type S plug fuses are time-delay and tamper resistant. 125 Volts 15 Amps GP series. 125 Volts 20 Amps GTL series.
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TR10B400

RTNG PLUG 400A/1000CT MVT PLUS

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.