Mersen SMF3/10 - 300V 3/10 to 10A Fuse for protection of fluorescent lighting fixtures and ballasts 300 Volts 0.3 Amps SMF series.
Mersen

SMF3/10

Alternate Item Number: 782001751630

UPC: 782001751630

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Multiplier: 5

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Overview

The Mersen SMF3/10 is a specialized time-delay fuse engineered for the critical protection of fluorescent lighting fixtures and ballasts. Designed to meet the demanding requirements of modern lighting systems, this SMF series fuse offers reliable overcurrent protection, safeguarding sensitive electronic components from damage. With a robust 300VAC voltage rating and a versatile amperage range from 3/10A (0.3A) to 10A, the SMF3/10 is an ideal choice for a wide array of fluorescent lighting applications. This fuse is specifically designed to handle the unique challenges presented by fluorescent ballasts, including significant inrush currents. Its time-delay characteristic ensures that it will not nuisance trip during these momentary surges, while still providing swift and effective protection against sustained overloads and short circuits. This dual capability is crucial for maintaining the operational integrity and longevity of fluorescent lighting installations. Key features and specifications of the Mersen SMF3/10 fuse include: - **Type:** Time-delay fuse - **Voltage Rating:** 300VAC - **Amperage Range:** 3/10A (0.3A) to 10A - **Interrupting Rating (I.R.):** 10kA - **Approvals:** UL Listed (File No. E10480), CSA Certified - **Application:** Protection of fluorescent lighting fixtures and ballasts The SMF series fuses, along with Mersen's compatible SHR fuse holders, provide a complete and compliant solution for individual 300V fixture protection. The SHR fuse holder, available in single or double wire versions, features an integral clip for easy panel mounting and is designed to fit standard 7/8" knock-out openings, offering anti-rotation stability. The holder's design facilitates direct insertion of ballast leads, simplifying installation and ensuring secure connections.
  • Time-delay fuse for fluorescent lighting protection
  • 300VAC voltage rating, 0.3A to 10A amperage range
  • 10kA interrupting rating for reliable overcurrent protection
  • UL Listed (E10480) and CSA Certified for compliance
  • Integral insulating cap for enhanced safety and compact design

Specifications

Amperage Rating
0.3 A
Application
Protection of fluorescent lighting fixtures and ballasts
Brand Name
Ferraz Shawmut
Connection
Bayonet
Current Rating
0.3A-10A
Interrupt Rating
10 kA
Mounting
SHR-1 Or SHR
Series
SMF
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 V
Voltage Rating
300 VAC
Package Dimensions (L x W x H)
1.89 IN x 0.25 IN x 0.25 IN
Package Dimensions (L x W x H)
4.8006 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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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.