Littelfuse LS2552-1 - 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. Applications: Typical applications include heating, air conditioning and refrigeration systems, elevator systems, material handling equipment, control panels, motor controls, switchgear, and anywhere power needs to be distributed to more than one load.
Littelfuse

LS2552-1

Alternate Item Number: 0LS25521Z

UPC: 079458014976


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BrochureTechnical BulletinSpecification Sheet

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Overview

The Littelfuse LS2552-1 POWR-BLOKS power distribution block is a DIN-rail mounted solution for safe and efficient cable splicing, fixed junction tap-offs, or splitting primary power into secondary circuits. Part of the LX2XXX-DIN series, this block features an integral DIN-rail mount for quick installation and an optional hinged safety cover to protect connections during maintenance. It supports applications in heating, air conditioning, refrigeration systems, elevator controls, material handling equipment, motor controls, switchgear, and control panels. The block ensures reliable power distribution to multiple loads while maintaining compliance with industry standards. Its robust construction and DIN-rail compatibility make it ideal for panel builders and system integrators requiring efficient, code-compliant power distribution. The LS2552-1 is manufactured in the US and carries the UNSPSC code 39121629.
  • DIN-rail mount for quick installation
  • Optional hinged safety cover for protected connections
  • Supports applications in HVAC, elevator controls, motor controls, and switchgear
  • Reliable power distribution to multiple loads
  • Compliant with industry standards

Specifications

Application
Anywhere power needs to be distributed to more than one load
Brand Name
Littelfuse
Connection Type
Screw Terminal
Mounting Type
DIN-Rail
Mounting Type
integral DIN-rail mount
Series
LX2XXX-DIN
Standard
UL Listed and CSA Certified RoHS
Sub Brand
LS Series
The Mersen FBC60J30I is an open-style Class J fuse block designed for 600V applications, accommodating fuses from 0-100A. This Generation 2 (Gen2) model offers enhanced features for efficient installation and configuration. It supports multiple connector types, including screw, pressure plate, and box connectors, ensuring compatibility with a wide range of stranded or solid wire. The FBC60J30I is DIN-rail mountable, providing a compact footprint compared to traditional fuse blocks. Its dovetail nesting capability allows for easy field assembly of multipole configurations. When paired with Mersen’s newly designed dead front covers, the fuse bases achieve an IP20 rating for added safety. Manufactured in the US.

FBC60J30I

The Mersen FBC60J30I is an open-style Class J fuse block designed for 600V applications, accommodating fuses from 0-100A. This Generation 2 (Gen2) model offers enhanced features for efficient installation and configuration. It supports multiple connector types, including screw, pressure plate, and box connectors, ensuring compatibility with a wide range of stranded or solid wire. The FBC60J30I is DIN-rail mountable, providing a compact footprint compared to traditional fuse blocks. Its dovetail nesting capability allows for easy field assembly of multipole configurations. When paired with Mersen’s newly designed dead front covers, the fuse bases achieve an IP20 rating for added safety. Manufactured in the US.
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.

LD4551-3

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.
D4/8.SFT2.I.ADO

1SNA399777R1200

D4/8.SFT2.I.ADO

Frequently Asked Questions

What types of fuses does Littelfuse offer?

Littelfuse offers UL Class, high-speed, medium voltage, 10x38 mm, and solar fuses for various applications.

What are the voltage and current ratings for 10x38 mm fuses?

10x38 mm fuses are available with ratings from 125 to 1000 volts and 1/10 to 30 amperes.

What types of protection relays does Littelfuse provide?

Littelfuse provides feeder, Shock-Block GFCI, resistance grounding, voltage, timer, arc-flash, motor, pump, ground-fault, and trailing-cable protection relays.

What is the purpose of the Industrial Shock-Block GFCI?

The Industrial Shock-Block GFCI is designed for people protection in industrial facilities, meeting UL Standard 943C Class C and Class D.

Where can I get technical support for Littelfuse products?

Technical support is available via phone at +1-800-TEC-FUSE (US & Canada) or by email at [email protected].

How can I check product availability and pricing?

Product availability, pricing, and order placement can be accessed through the private website LittelfuseBusinessCenter.com.

What are the benefits of POWR-BLOKS power distribution blocks?

POWR-BLOKS offer safe cable splicing and power distribution. Touch-safe blocks and covers enhance safety by reducing accidental contact risk.

How do Littelfuse arc-flash protection relays function?

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

What is the function of trailing-cable protection relays?

These relays monitor ground conductor integrity in portable cables, protecting equipment from hazardous voltages caused by ground faults.

What training resources are available on Littelfuse University?

Littelfuse University offers in-depth training courses and quick references on products, programs, and tools, with courses from 3 to 20 minutes.

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.