Littelfuse H324012P - FAST-ACTING CER W/ AXIAL H-PACK 12A. The 3AB Fast-Acting Fuse with ceramic body construction permits higher interrupting ratings and voltage ratings. Ideal for applications where high current loads are expected. Features: In accordance with UL Standard 248-14. Available in cartridge and axial lead format and with various forming dimensions. RoHS compliant and Lead-free.
Littelfuse

H324012P

Alternate Item Number: 0324012.HXP

UPC: 079458928464


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Minimum Qty: 100

Multiplier: 100

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Overview

The **Littelfuse 3AB Fast-Acting Ceramic Fuse (SKU: H324012P)** delivers uncompromising overcurrent protection for high-performance industrial and electronic applications. Engineered with a robust ceramic body, this fuse combines superior thermal stability, high interrupting ratings, and elevated voltage endurance—making it the ideal choice for circuits subjected to extreme current loads. Designed to meet the stringent requirements of **UL Standard 248-14**, the 3AB series ensures compliance with global safety regulations while providing rapid response to fault conditions, minimizing downtime and equipment damage in critical systems. **Key Features and Benefits:** - **High Interrupting Ratings:** The ceramic construction enables the fuse to safely interrupt high fault currents, protecting sensitive downstream components from catastrophic failure. This is particularly critical in power distribution panels, motor controllers, and industrial machinery where transient surges are common. - **Axial Lead Configuration:** The axial lead design simplifies installation in compact enclosures and printed circuit boards (PCBs), offering flexibility in panel mounting and wiring configurations. This format is widely used in power supplies, battery management systems, and telecom infrastructure. - **RoHS Compliance & Lead-Free:** Manufactured without hazardous substances, the 3AB series aligns with modern environmental standards, ensuring seamless integration into green manufacturing processes and reducing end-of-life disposal concerns. - **Versatile Forming Dimensions:** Available in multiple forming options, this fuse can be tailored to fit specific application requirements, whether in high-density electronics or rugged industrial environments. Customization options include lead length adjustments and specialized terminations for automated assembly. - **Fast-Acting Response:** Engineered for rapid response to overcurrent events, the 3AB fuse prevents thermal runaway in sensitive components, extending the operational lifespan of capacitors, semiconductors, and transformers. **Industry Applications:** The **Littelfuse 3AB Fast-Acting Ceramic Fuse** is a cornerstone component in a wide range of industrial and commercial applications, including: - **Industrial Machinery:** Protects motors, drives, and control panels from overloads and short circuits in manufacturing plants, CNC machines, and robotic systems. - **Power Supplies & Inverters:** Safeguards high-current power conversion equipment in renewable energy systems, UPS units, and solar inverters. - **Telecommunications:** Ensures reliable operation of network infrastructure, including base stations, routers, and data center power distribution units. - **Automotive & Transportation:** Used in electric vehicle (EV) charging systems, battery management, and rail signaling equipment where reliability under harsh conditions is paramount. - **Consumer Electronics:** Provides overcurrent protection in high-power appliances, gaming consoles, and industrial control units. **Why Choose Littelfuse?** With over a century of innovation in circuit protection, Littelfuse has established itself as a trusted partner for engineers and procurement professionals worldwide. The **3AB series** exemplifies the company’s commitment to quality, performance, and compliance, backed by rigorous testing and global certifications. Whether deployed in a factory automation system, a medical device, or a renewable energy project, this fuse delivers the reliability and precision required to maintain operational continuity. For applications demanding **fast-acting, high-interrupting protection in a compact axial lead format**, the Littelfuse 3AB is the definitive solution—engineered to perform when it matters most. **Installation and Selection Considerations:** When integrating the **H324012P** into your design, consider the following best practices: - **Current Rating:** Ensure the fuse’s 12A rating aligns with the nominal operating current of the protected circuit, accounting for startup surges and transient loads. - **Voltage Rating:** Verify compatibility with the system’s maximum voltage to prevent arcing or failure during fault conditions. - **Mounting Environment:** The ceramic body excels in high-temperature or vibration-prone environments, but ensure adequate clearance for heat dissipation. - **Replacement and Maintenance:** Littelfuse’s standardized sizing and labeling simplify fuse replacement, reducing downtime in critical systems. For engineers seeking a **high-performance, RoHS-compliant fuse** that balances speed, durability, and regulatory adherence, the **Littelfuse 3AB Fast-Acting Ceramic Fuse (H324012P)** is the optimal choice—delivering peace of mind in every application.
  • High interrupting ratings for superior fault current protection
  • Ceramic body construction for thermal stability and durability
  • Axial lead format for versatile PCB and panel mounting
  • UL 248-14 compliant and RoHS/lead-free certified
  • Fast-acting response to prevent equipment damage

Specifications

Amperage Rating
12 Amps
Application
electronic equipment & appliances
Brand Name
Littelfuse
Connection Type
Axial Lead
Current Rating
12 A
Material
Ceramic
Mounting Type
Axial
Series
3AB
Special Features
Fast-Acting
Standard
UL Standard 248-14
Sub Brand
324 Series
Type
3AB Fast-Acting
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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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

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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.