Mersen SLR7 - 300V 1/2 to 15A Fuse for protection of fluorescent lighting fixtures and ballasts 300 Volts 7 Amps SLR series.
Mersen

SLR7

Alternate Item Number: 782001751531

UPC: 782001751531

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Minimum Qty: 5

Multiplier: 5

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Overview

The **Mersen SLR7 300V 7A fuse** is a fast-acting overcurrent protection device engineered for fluorescent lighting fixtures and ballasts operating at 300VAC. Part of Mersen’s SLR series, this fuse provides precise protection against short circuits, overloads, and voltage fluctuations in commercial, industrial, and institutional lighting systems. With an interrupting rating of 10kA IR, the SLR7 meets stringent electrical safety standards, including UL Listing (File No. E10480) and CSA certification, ensuring compliance with NEC and IEC requirements. Designed for individual fixture protection, the SLR7 is ideal for offices, schools, hospitals, retail spaces, and manufacturing facilities where reliable lighting is critical. Its compact ceramic body delivers superior heat resistance and mechanical strength, while the integral fuse and insulating cap simplify installation and maintenance. The fuse is rated for 300VAC and supports current ratings from 1/2A to 15A, with the SLR7 specifically rated at 7A. Key features include: - **Fast-acting response** to protect sensitive ballasts and lamps from inrush currents and faults. - **10kA interrupting rating** for reliable performance in high-fault environments. - **UL Listed and CSA Certified** for global market compliance. - **Compatibility** with Mersen SHR fuse holders, including single and double wire versions (SHR-1 and SHR), which feature integral mounting clips and anti-rotation designs for secure panel installation. - **Thermoplastic insulator** with a 150°C RTI rating for enhanced durability. The SLR7 is part of Mersen’s trusted SLR series, a line of in-line fuses and holders designed to safeguard fluorescent lighting infrastructure. Whether used in new installations or retrofits, the SLR7 ensures uninterrupted operation, reduced downtime, and lower maintenance costs. For professionals seeking a dependable fuse solution, the Mersen SLR7 300V 7A is an industry-standard choice for protecting critical lighting systems.
  • Fast-acting fuse for fluorescent lighting and ballast protection
  • 300VAC rating with 7A current capacity
  • 10kA interrupting rating for high-fault environments
  • UL Listed (File No. E10480) and CSA Certified
  • Compatible with Mersen SHR fuse holders (single/double wire versions)

Specifications

Amperage Rating
7 A
Application
Protection of fluorescent lighting fixtures and ballasts
Brand Name
Ferraz Shawmut
Connection
Bayonet
Current Rating
7 A
Interrupt Rating
10 kA
Material
Ceramic
Mounting
SHR-1 Or SHR
Series
SLR
Special Features
Integral fuse and insulating cap for use with SHR or SHR-1 fuse holders, fast-acting
Standard
UL Listed/CSA Certified
Type
1/4 X 1-1/4 W/integral Cap
Voltage Rating
300 VAC
Package Dimensions (L x W x H)
1.9 IN x 0.25 IN x 0.25 IN
Package Dimensions (L x W x H)
4.826 cm x 6.35 mm x 6.35 mm
Package Weight (Imperial)
0.010 L
Package Weight (Metric)
0.005 kg
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9F61 Size B Clips 1.6in

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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 Mersen

What industries and applications are Mersen products used for?

Mersen products are used across diverse industrial sectors including solar power, electric vehicles, buildings/construction, industrial automation, power distribution, HVAC, elevators, telecommunications, and specialty manufacturing. Key application areas include circuit protection, surge protection, battery module protection, electrical safety systems, and power management for residential, commercial, and utility-scale installations.

What are the main product lines offered by Mersen?

Mersen offers five primary electrical power product lines: IEC and UL/CSA Fuses and Fusegear, Surge Protection, Low Voltage Disconnect Switches, Power Distribution Blocks, and Engineered Solutions. Their comprehensive range includes specialized components like high-speed fuses, modular fuse holders, surge arresters, and custom-engineered electrical protection systems for industrial and power management applications.

What are the key features of Mersen products?

Mersen products feature advanced electrical protection and power management solutions with key characteristics including finger-safe design, compact modularity, and high-performance safety features. Their product lines span electrical power components like fuses, surge protection, power distribution blocks, and specialized solutions for industrial, solar, and building applications. Critical features include UL/CSA approvals, high short-circuit current ratings, and innovative technologies like the Fuse Control™ program that minimize electrical risks and optimize system performance.

What environmental ratings do Mersen products have?

Mersen products meet rigorous environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13, CSA Type 1, 2, 3, 4, 4X, 12, and 13, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13. They feature IEC 60529 IP66 protection, with enhanced UV inhibitors for outdoor weathering and operating temperatures ranging from -40°C to 130°C (-40°F to 266°F). These ratings ensure superior protection in wet, corrosive, and challenging industrial environments.

What accessories are available for Mersen products?

Mersen offers multiple accessories for their fuse blocks and systems, including safety pullers (DFC3M and DFC3LP), DIN-rail adapters (DRM), bus bars, auxiliary contacts, and specialized mounting hardware. Key accessories include the DFC3M safety puller for 1-1/2" x 13/32" midget or Class CC fuses, the DRM adapter for mounting 303 series fuse blocks on DIN-rail, and UltraSafe fuse module accessories like bus bars and auxiliary contacts that enable module interconnection and monitoring.

How are Mersen products typically installed?

Mersen products are typically installed in electrical distribution systems, control panels, and industrial automation environments using multiple mounting options. These include service entrance panel mounting, distribution panel installation, control panel DIN rail mounting, and custom engineered solutions like Fused Coordination Panelboards. Installation depends on the specific product type, such as fuses, surge protective devices, or switches, and is designed to provide electrical protection and circuit safety in various industrial and commercial applications.

What certifications and standards do Mersen products comply with?

Mersen products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Our products meet rigorous safety and performance standards for industrial applications across North America, China, Russia, and other global markets, ensuring compliance and reliability in electrical power and advanced materials solutions.

What technical support does Mersen offer?

Mersen provides comprehensive technical support through multiple channels, including technical experts located in your time zone who can assist with product selection, application guidance, and troubleshooting. Their Fuse Control™ program offers a free Fuse Inventory Audit & Analysis, and customers can access technical resources through their sales representatives and online platform ep.mersen.com.