Littelfuse NLS007 - NLS series fuses provide low cost protection for general-purpose feeder and branch circuits when available short circuit currents are less than 50,000 amperes. They replace all Class H fuses which have only a 10,000 ampere interrupting rating. They are suitable for use in many residential and smaller commercial and industrial applications.
Littelfuse

NLS007

Alternate Item Number: 0NLS007.T

UPC: 079458370591

Documents & Media
BrochureTechnical BulletinTechnical DrawingSpecification Sheet

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Overview

The Littelfuse NLS007 fuses represent a cost-effective and reliable solution for general-purpose feeder and branch circuit protection. Engineered by Littelfuse, a recognized leader in circuit protection, these NLS series fuses are specifically designed for applications where available short circuit currents do not exceed 50,000 amperes. This makes them an ideal upgrade and direct replacement for older Class H fuses, which typically offer a significantly lower interrupting rating of only 10,000 amperes. By choosing the NLS007, users gain enhanced safety and operational integrity, ensuring protection against potentially damaging overcurrent events. These fuses are exceptionally versatile, finding extensive use across a broad spectrum of electrical installations. Their affordability and robust performance make them a preferred choice for residential applications, safeguarding household circuits from faults. In the commercial sector, they are widely deployed in smaller office buildings, retail spaces, and other commercial establishments to protect lighting, HVAC, and general power distribution systems. Furthermore, the NLS007 series is well-suited for smaller industrial environments, providing essential protection for machinery, control circuits, and feeder lines where the fault current levels are within the specified 50kA limit. The primary benefit of the Littelfuse NLS007 lies in its balance of performance and economy. It offers a substantial improvement in interrupting capacity over Class H fuses without a prohibitive increase in cost, delivering superior protection for a wide range of feeder and branch circuits. This enhanced rating is critical for preventing catastrophic damage to equipment and ensuring personnel safety during fault conditions. The NLS series fuses are designed for straightforward installation in compatible fuse holders and panels, facilitating easy integration into existing electrical systems. Key features and benefits include: * **Enhanced Interrupting Rating:** A 50,000 ampere interrupting rating provides significantly better protection than Class H fuses. * **Cost-Effective Protection:** Offers a low-cost solution for general-purpose circuit protection needs. * **Broad Application Range:** Suitable for residential, commercial, and smaller industrial applications. * **Direct Replacement for Class H:** Easily replaces older Class H fuses, offering an immediate upgrade in safety and performance. * **Reliable Littelfuse Quality:** Manufactured by Littelfuse, a trusted name synonymous with dependable circuit protection solutions. When selecting fuses for feeder and branch circuits, understanding the potential fault current is paramount. The NLS007 is specifically engineered for scenarios where this current is below 50kA. This specification is crucial for ensuring that the fuse will safely interrupt the circuit during a short circuit event, preventing arc flash and minimizing damage. Professionals in electrical design, installation, and maintenance rely on fuses like the NLS007 for their predictable performance and adherence to safety standards. The Littelfuse NLS007 fuse, SKU NLS007, continues the company's legacy of providing robust and reliable electrical components that contribute to safer and more efficient electrical systems across various industries.
  • Provides low-cost protection for general-purpose feeder and branch circuits.
  • Features a 50,000 ampere interrupting rating, exceeding Class H fuse capabilities.
  • Direct replacement for Class H fuses, offering an immediate safety and performance upgrade.
  • Suitable for a wide range of residential, commercial, and smaller industrial applications.
  • Manufactured by Littelfuse, a trusted leader in circuit protection technology.

Specifications

Application
General Purpose
Brand Name
Littelfuse
Special Features
Economical/low interrupt
Standard
Standard 248-9 UL Listed/CSA
Sub Brand
POWR-GARD NLS Series
Type
Class K5
Package Weight (Imperial)
0.100 L
Package Weight (Metric)
0.045 kg
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

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

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
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.