Littelfuse H21601.6P - FAST-ACTING 5X20 CERAMIC H-PACK 1.6A. 5x20mm fast-acting ceramic body cartridge fuse designed to IEC specification. Features: Designed to International (IEC ) Standards for use globally. Meets the IEC 60127-2, sheet 1 specification for fast-acting fuses. Available in cartridge and axial lead form RoHS compliant and lead-free.
Littelfuse

H21601.6P

Alternate Item Number: 021601.6HXP

UPC: 079458901979


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Overview

The **Littelfuse H21601.6P** is a premium-grade **5x20mm ceramic fast-acting cartridge fuse** engineered to deliver precise overcurrent protection in compliance with **IEC 60127-2, sheet 1** standards. Designed for global deployment, this **1.6A fuse** combines robust ceramic construction with fast response characteristics, making it an ideal choice for critical applications across industrial, commercial, and consumer electronics. As part of Littelfuse’s trusted **H-PACK series**, the H21601.6P ensures superior thermal stability, mechanical durability, and long-term reliability—even in harsh operating environments. This fuse is purpose-built for **high-performance circuit protection**, where rapid fault interruption is essential to prevent damage to sensitive components. Its **ceramic body** provides exceptional heat resistance and structural integrity, outperforming plastic alternatives in high-temperature or high-vibration scenarios. The **fast-acting** response time ensures immediate interruption of overcurrent events, safeguarding downstream equipment from catastrophic failures. Available in both **cartridge and axial lead configurations**, the H21601.6P offers installation flexibility to meet diverse application requirements. **Key applications** include: - **Industrial control panels** and machinery where reliable fault protection is non-negotiable. - **Power supplies** for servers, telecom equipment, and data centers requiring IEC-compliant fusing. - **Automotive electronics**, including battery management systems and charging infrastructure. - **Consumer electronics**, such as adapters, chargers, and small appliances where space efficiency and compliance are critical. - **Renewable energy systems**, including solar inverters and wind turbine controllers, where environmental robustness is paramount. Professionals select the **Littelfuse H21601.6P** for its **global compliance** (IEC 60127-2), **RoHS lead-free** construction, and **versatile mounting options**. The **1.6A rating** makes it suitable for low-to-moderate current circuits requiring fast interruption, such as signal lines, control circuits, or secondary power feeds. Its **compact 5x20mm form factor** allows for easy integration into tight spaces, while the **ceramic body** ensures consistent performance across wide temperature ranges (-40°C to +125°C typical). Littelfuse, a leader in circuit protection solutions, backs the H21601.6P with decades of expertise in fuse technology. The company’s **H-PACK series** is renowned for its **precision engineering**, **stringent quality control**, and **commitment to sustainability**—aligning with modern regulatory demands. Whether deployed in **high-reliability industrial systems** or **cost-sensitive consumer products**, this fuse delivers the **performance and peace of mind** that engineers and procurement teams demand. For applications demanding **IEC-compliant fast-acting protection** with **global compatibility**, the **Littelfuse H21601.6P** stands as a proven solution. Its **lead-free, RoHS-compliant design** ensures environmental responsibility without compromising on safety or reliability. Trust Littelfuse to provide the **right fuse for the right application**—where precision, durability, and compliance intersect.
  • IEC 60127-2 compliant fast-acting ceramic fuse for global applications
  • 1.6A current rating with 5x20mm compact ceramic body
  • RoHS lead-free and environmentally compliant (H-PACK series)
  • Available in cartridge and axial lead configurations for installation flexibility
  • Superior thermal/mechanical stability for harsh operating environments

Specifications

Application
electronic equipment & appliances
Brand Name
Littelfuse
Connection Type
Cartridge
Current Rating
1.6 A
Material
Ceramic
Mounting Type
Cartridge and axial lead
Series
H-PACK
Size
5x20mm
Special Features
Fast-Acting
Standard
EC 60127-2
Sub Brand
216 Series
Type
5 x 20 mm IEC Fast-Acting
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Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

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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 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.