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Overview
- 2-pole Class CC fuse block for dual-circuit protection
- Integral DIN rail mounting for 35mm "hat" type rails
- Releasable mechanism for tool-free installation/removal
- Eliminates need for mounting adapters, reducing assembly time
- Compatible with industrial control panels and automation systems
Specifications
Brand Name | Littelfuse |
Special Features | DIN Rail Mounting |
Standard | UL Listed CSA |
Sub Brand | L600 Fuseblock |
Type | Class CC Fuseblock |
Package Weight (Imperial) | 0.208 L |
Package Weight (Metric) | 94.610 g |

BB18
BB18 is a three-phase busbar terminal power feed lug, which is intended for use with LPSM/LPSC series fuse holders. See datasheet for more detailed specifications.
LFH25100-1CID
The new Littelfuse Class H blocks offer many advantages over previous generations that are noted in the features and benefits section. Class H and Class R fuse blocks are dimensionally the same, but Class R blocks incorporate a rejection feature, which only allows Class R fuses to be inserted.
LFG48060-3CDINR
All Littelfuse Class G fuse blocks offer snap-to-release DIN rail mounting and universal mounting holes. Class G fuse blocks are designed for use with time-delay current limiting Class G fuses.
LFFB003
The Littelfuse LFFB fuse block is designed to accept HAZGARD, CNL and CNN style limiter fuses. Typical applications include: forklifts, golf carts, and other low voltage battery-operated equipment.
LFT604001CS
The new Littelfuse Class T fuse blocks offer many advantages over previous generations that are noted in the features and benefits section. Of particular value is the space savings these new blocks provide.
LFG60020-2SQDINR
All Littelfuse Class G fuse blocks offer snap-to-release DIN rail mounting and universal mounting holes. Class G fuse blocks are designed for use with time-delay current limiting Class G fuses.
LFJ102001C
The LFJ1000 solar fuse block is specifically designed for the Littelfuse SPFJ 1000 Vdc Solar Fuse. It meets UL electrical characteristic requirements and is available in multiple amperages.
LD3955-2
POWR-BLOKS power distribution blocks offer a safe, convenient way of splicing cables, providing a fixed junction tap-off point or splitting primary power into secondary circuits. LX2XXX-DIN series offers integral DIN-Rail mount and an optional hinged safety cover.
LFJ60600-1C
The Littelfuse 600 V Class J blocks offer generous space savings and enhanced value over previous generations, such as indication, snap-to-release DIN-rail mounting and universal mounting holes.
LFH256001C
The new Littelfuse Class H blocks offer many advantages over previous generations that are noted in the features and benefits section. Class H and Class R fuse blocks are dimensionally the same, but Class R blocks incorporate a rejection feature, which only allows Class R fuses to be inserted.Frequently Asked Questions
What is the primary use of UL Class Fuses?
UL Class Fuses are used for protecting electrical systems and personnel. They include indication features to improve productivity and enhance system safety.
What do high-speed fuses protect in power systems?
High-speed fuses protect critical power semiconductor devices against short circuits. They are used in power conversion applications like inverters, variable-speed drives, UPS, and DC drive systems.
What do medium voltage fuses protect?
E-rated and R-rated medium voltage fuses protect transformers, potential transformers, feeders, and motor circuits. They are available in various configurations for unique applications.
What are the voltage and current ratings for 10 x 38 mm fuses?
10 x 38 mm fuses are available with ratings from 125 to 1000 volts and 1/10 to 30 amperes. They provide compact supplemental protection in various versions.
What is the maximum voltage for Littelfuse solar fuses?
Littelfuse offers solar fuses and holders that support applications up to 1500 Vdc. These are suitable for both high-current and low-current applications.
What is the purpose of POWR-BLOKS power distribution blocks?
POWR-BLOKS provide a safe, convenient way to splice cables and manage power distribution within panels and systems. Touch-safe blocks and covers enhance safety.
What standards do pre-engineered switch panels meet?
Littelfuse Pre-Engineered electrical switch panel solutions are UL Listed. They are designed to meet NEC® coordination requirements, ideal for the Construction Market.
What conditions do feeder protection relays protect circuits from?
Feeder protection relays protect circuits from overcurrent, ground faults, phase loss, overload, and other detrimental conditions.
What UL standard does the Industrial Shock-Block® GFCI meet?
The Industrial Shock-Block® GFCI meets UL Standard 943C Class C and Class D. It is designed for people protection in industrial facilities.
What are the safety benefits of high-resistance grounding?
High-resistance grounding limits point-of-fault damage and eliminates arc-flash hazards. It also prevents transit overvoltages associated with ground faults.
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.
