Authorized Littelfuse Distributor
Littelfuse 332009P - FUSE 250V FA 3AB PB-FREE 9A. The 3AB Very Fast-Acting Fuse for protection of Silicon Controlled Rectifiers and similar solid-state devices. Features: Designed to meet UL248-14. RoHS Compliant and Lead-Free. Available in cartridge type only.

Littelfuse 332009P FUSE 250V FA 3AB PB-FREE 9A. The 3AB Very Fast-Acting Fuse for protection of Silicon…

Alternate Item Number: 0332009.VXP

UPC: 079458164756

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Contact for Pricing

Minimum Qty: 5

Multiplier: 5

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The **Littelfuse 3AB Very Fast-Acting Fuse (SKU: 332009P)** is a high-performance, precision-engineered solution designed for the protection of **Silicon Controlled Rectifiers (SCRs)** and other sensitive solid-state devices in industrial and power electronics applications. With a **250V rating and 9A current capacity**, this cartridge-type fuse delivers rapid response to overcurrent conditions, ensuring critical components remain safeguarded from transient faults, short circuits, and sustained overloads. Engineered to meet **UL248-14 standards**, the 3AB series is a trusted choice for engineers and technicians who demand reliability, precision, and compliance in high-stakes environments. **Key Features and Benefits:** - **Ultra-Fast Response Time:** The Littelfuse 3AB fuse is specifically designed for **very fast-acting** protection, making it ideal for applications where even minor overcurrents can damage sensitive semiconductors. Its rapid interruption capability minimizes thermal stress and prevents catastrophic failure in SCRs, thyristors, and other solid-state devices. - **RoHS-Compliant and Lead-Free Construction:** Manufactured without hazardous substances, this fuse aligns with global environmental regulations, ensuring safe disposal and reducing compliance risks for OEMs and end-users. Its **Pb-free** design also enhances compatibility with modern soldering processes and high-reliability assembly lines. - **Cartridge-Type Design for Easy Installation:** The **cartridge-type fuse** is designed for straightforward integration into industrial control panels, power supplies, and motor drives. Its compact form factor and standardized dimensions simplify replacement and maintenance, reducing downtime in critical operations. - **UL248-14 Certification:** Compliance with **UL248-14** guarantees that the fuse meets stringent safety and performance criteria for overcurrent protection in North American markets. This certification is essential for applications requiring third-party validation, such as in **renewable energy systems, industrial automation, and semiconductor manufacturing**. - **Versatile Industrial Applications:** The 3AB series is widely used in **power conversion systems, motor controllers, battery management systems, and high-frequency switching circuits**. Its ability to protect **SCRs, diodes, and MOSFETs** makes it a go-to solution for engineers working in **electric vehicle charging stations, solar inverters, and industrial motor drives**. **Why Choose Littelfuse for Fast-Acting Fuses?** Littelfuse is a **global leader in circuit protection**, with over a century of innovation in fuse technology. The company’s **3AB series** reflects its commitment to delivering **high-speed, high-reliability protection** for sensitive electronics. Unlike standard fuses, which may react too slowly for solid-state devices, the 3AB fuse is engineered to **interrupt faults in milliseconds**, preserving the integrity of expensive components. Its **consistent performance across temperature extremes** and **long operational lifespan** further solidify its reputation as a premium choice for industrial and commercial applications. **Typical Applications Include:** - **Power Electronics:** Protection of **SCRs, thyristors, and IGBTs** in rectifiers, inverters, and converters. - **Industrial Automation:** Safeguarding **PLCs, servo drives, and motor controllers** from transient surges. - **Renewable Energy:** Critical component protection in **solar inverters, wind turbine converters, and energy storage systems**. - **Telecommunications:** Ensuring uptime in **data center power supplies and network infrastructure**. - **Automotive and Transportation:** Use in **EV charging systems, traction inverters, and railway electrification**. **Installation and Selection Considerations:** When selecting a fast-acting fuse like the **Littelfuse 3AB (332009P)**, engineers must consider the **fault current rating, ambient temperature, and coordination with downstream protection devices**. The **250V rating** makes it suitable for **low-to-medium voltage systems**, while the **9A current rating** ensures compatibility with circuits where precise overcurrent thresholds are required. For optimal performance, install the fuse in a **dedicated fuse holder** that provides proper clearance and thermal management. Regular inspection and replacement are recommended to maintain system reliability, especially in high-vibration or high-temperature environments. **Environmental and Safety Compliance:** The **RoHS-compliant and lead-free** construction of the 3AB fuse ensures compliance with **EU REACH, WEEE, and other global environmental directives**. This makes it an **eco-friendly choice** for manufacturers prioritizing sustainability without compromising on performance. Additionally, its **UL248-14 certification** provides peace of mind for safety-critical applications, where regulatory compliance is non-negotiable. **Conclusion:** The **Littelfuse 3AB Very Fast-Acting Fuse (SKU: 332009P)** is more than just a protective component—it is a **critical safeguard for modern power electronics**. Whether protecting **SCRs in a motor drive, diodes in a solar inverter, or IGBTs in an industrial robot**, this fuse delivers **unmatched speed, reliability, and compliance**. With Littelfuse’s **proven track record in circuit protection**, engineers can trust the 3AB series to **minimize downtime, reduce maintenance costs, and extend the lifespan of expensive equipment**. For applications where **precision and speed matter**, the 3AB fuse is the **industry-standard solution** for overcurrent protection in demanding industrial environments.
  • Very fast-acting response for SCR and solid-state device protection
  • 250V rating, 9A current capacity, cartridge-type design
  • RoHS-compliant and lead-free construction for environmental safety
  • UL248-14 certified for North American market compliance
  • Ideal for power electronics, industrial automation, and renewable energy systems

Specifications

Application
NA
Brand Name
Littelfuse
Connection Type
Cartridge
Current Rating
9 A
Material
Lead-Free
Series
3AB
Size
3AB Cartridge
Special Features
Available in cartridge type only
Standard
Designed to meet UL248-14
Sub Brand
332 Series
Type
Very Fast Acting Fuse
Voltage Rating
250 V
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 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip

30323R

Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip
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

What types of fuses does Littelfuse offer for industrial applications?

Littelfuse offers UL Class fuses, high-speed fuses, medium voltage fuses, 10 x 38 mm fuses, and solar fuses for industrial applications.

What are Littelfuse high-speed fuses used for?

High-speed fuses protect critical power semiconductor devices against short circuits in power conversion applications like inverters and variable-speed drives.

What is the voltage range for Littelfuse solar fuses?

Littelfuse offers solar fuses and holders up to 1500 Vdc for both high-current and low-current applications.

What protection do feeder protection relays offer?

Feeder protection relays protect circuits from overcurrent, ground faults, phase loss, overload, and other detrimental conditions.

What is the Industrial Shock-Block® GFCI designed for?

It is designed for people protection in industrial facilities and meets UL Standard 943C Class C and Class D.

What do Littelfuse voltage monitors protect against?

Voltage monitors provide protection against both supply line and load side faults when the motor is running.

How do arc-flash protection relays enhance safety?

These relays detect developing arc-flash incidents and send a trip signal to interrupt power before significant damage occurs.

What types of protection do Littelfuse motor protection relays offer?

They offer voltage monitors, current monitors, and Bluetooth-enhanced overload relays for low and medium voltage applications.

What is the purpose of Littelfuse Techline support?

Techline experts answer questions about product cross-references, general technical information, engineering drawings, and application assistance.

What applications are 10 x 38 mm fuses suitable for?

These fuses provide compact supplemental protection for a wide variety of applications, available in time-delay or fast-acting versions.

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.