Littelfuse H322012P - VERY FAST ACTING MICRO H-PACK 12A. The 3AB Very Fast-Acting Fuse for protection of Silicon Controlled Rectifiers and similar solid-state devices. Features: In accordance with UL Standard 248-14. Available in cartridge format only. RoHS compliant and Lead-free.
Littelfuse

H322012P

Alternate Item Number: 0322012.HXP

UPC: 079458924534


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Overview

The Littelfuse H322012P is a high-performance 3AB Very Fast-Acting fuse engineered to provide superior protection for sensitive Silicon Controlled Rectifiers (SCRs) and other similar solid-state power devices. Designed with precision and reliability at its core, this 12A fuse offers exceptionally rapid response times, crucial for safeguarding critical electronic components from the damaging effects of overcurrents and short circuits. In industrial and electronic applications where SCRs are integral to power control, voltage regulation, and motor drives, the integrity of these devices is paramount. A fast-acting fuse like the H322012P acts as the first line of defense, interrupting fault currents within milliseconds, thereby preventing catastrophic failures, reducing downtime, and extending the operational lifespan of expensive equipment. Manufactured by Littelfuse, a globally recognized leader in circuit protection, the H322012P adheres to the stringent requirements of UL Standard 248-14. This certification assures users that the fuse has undergone rigorous testing to meet established safety and performance benchmarks for industrial fuses. The fuse is presented in a standard cartridge format, facilitating straightforward integration into existing fuse holders and power distribution systems. This form factor is widely adopted across various industries due to its ease of replacement and robust mechanical integrity. Furthermore, the Littelfuse H322012P is RoHS compliant and lead-free, aligning with global environmental regulations and the growing demand for sustainable electronic components. This makes it an ideal choice for manufacturers and integrators committed to reducing their environmental footprint and meeting the compliance needs of diverse markets. The very fast-acting characteristic is particularly vital in applications involving high inrush currents or rapid transient events, where standard time-delay fuses might not offer adequate protection for delicate solid-state components. Key features and benefits of the Littelfuse H322012P include: * **Exceptional Speed:** Very fast-acting interruption capability to protect sensitive solid-state devices. * **Specialized Protection:** Specifically designed for SCRs and similar power electronic components. * **UL 248-14 Compliance:** Meets rigorous safety and performance standards for industrial fuses. * **Cartridge Format:** Standard and easy-to-install form factor for broad compatibility. * **Environmental Responsibility:** RoHS compliant and lead-free for sustainable applications. When selecting a fuse for SCR protection, engineers and technicians prioritize speed, reliability, and compliance. The Littelfuse H322012P delivers on all these fronts, offering peace of mind and robust circuit protection. Its application spans across numerous sectors, including industrial automation, power supplies, motor control systems, renewable energy inverters, and telecommunications equipment, where the reliable operation of solid-state power switching devices is critical. Trust Littelfuse for your most demanding circuit protection needs.
  • Very Fast-Acting interruption for sensitive solid-state device protection
  • Specifically designed for Silicon Controlled Rectifiers (SCRs) and similar components
  • Compliant with UL Standard 248-14 for industrial fuse safety and performance
  • Standard 3AB cartridge format for easy installation and replacement
  • RoHS compliant and Lead-free for environmentally conscious applications

Specifications

Amperage Rating
12 Amps
Application
solid-state device
Brand Name
Littelfuse
Connection Type
Cartridge
Current Rating
12 A
Mounting Type
Cartridge
Series
3AB Very Fast-Acting
Series
3AB Series
Size
Micro H-Pack
Size
Micro H-Pack cartridge
Special Features
RoHS compliant and
Standard
UL Standard 248-14
Sub Brand
322 Series
Type
Cartridge
Package Dimensions (L x W x H)
1.25 IN x 0.25 IN x 0.25 IN
Package Dimensions (L x W x H)
3.175 cm x 6.35 mm x 6.35 mm
Package Weight (Imperial)
0.150 L
Package Weight (Metric)
0.068 kg
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9F61 Size B Clips 1.6in

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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.