Mersen STG-V3-1/2 - Miniature fuse STG-V - Time-Delay 350VAC 3.5A
Mersen

STG-V3-1/2

Alternate Item Number: STG-V3-1/2

UPC: 782001245627

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Minimum Qty: 10

Multiplier: 10

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Overview

The Mersen STG-V3-1/2 miniature fuse is a high-performance time-delay fuse designed for precise overcurrent protection in industrial and commercial applications. Engineered to meet the demands of modern electrical systems, this fuse combines robust construction with reliable performance, ensuring optimal safety and longevity for sensitive equipment. With a voltage rating of 350VAC and a current rating of 3.5A, the STG-V3-1/2 is ideal for applications where transient surges or inrush currents are common, such as motor circuits, transformers, and control panels. Its time-delay characteristic allows it to withstand brief overloads without nuisance tripping, making it a preferred choice for professionals seeking both protection and reliability. Mersen, a global leader in electrical protection and thermal management solutions, has designed the STG-V3-1/2 to meet stringent industry standards, including UL and IEC certifications. The fuse features a durable glass body with dimensions of 5x15mm, ensuring compatibility with standard fuse holders and panels. This compact design makes it suitable for space-constrained installations, while its high breaking capacity provides robust protection against short circuits and overloads. Whether used in industrial automation, HVAC systems, or renewable energy applications, the STG-V3-1/2 delivers consistent performance in demanding environments. Selecting the right fuse for an application requires careful consideration of voltage, current, and time-delay characteristics. The STG-V3-1/2 excels in scenarios where temporary overloads are expected, such as during motor startup or capacitor charging. Its time-delay feature ensures that the fuse remains operational during these transient events, preventing unnecessary interruptions. Installation is straightforward, with the fuse designed to fit standard fuse blocks and holders, ensuring compatibility with existing infrastructure. For professionals prioritizing safety and reliability, the STG-V3-1/2 is a trusted solution backed by Mersen’s decades of expertise in electrical protection. Mersen’s reputation for innovation and quality makes the STG-V3-1/2 a standout choice in the miniature fuse market. The company’s commitment to research and development ensures that its products meet the evolving needs of industries such as manufacturing, energy, and transportation. By choosing the STG-V3-1/2, engineers and technicians gain access to a fuse that not only meets but exceeds industry standards, providing peace of mind in critical applications. Whether for new installations or replacements, this fuse is a reliable component in any electrical protection strategy.
  • 350VAC voltage rating for industrial applications
  • 3.5A current rating with time-delay characteristic
  • Glass body construction, 5x15mm dimensions
  • UL and IEC certified for global compliance
  • Ideal for motor circuits, transformers, and control panels

Specifications

AC Voltage Rating
350 V
Amperage Rating
3.5 A
Application
Electronic circuits
Brand Name
Mersen
Class
Supplemental
Connection
Ferrule
Current Rating
3.5 A
Material
Glass
Mounting
Clip
Size
4 x 0.18 in
Size
101.6 x 4.572 mm
Size
5 x 15 mm
Special Features
Glass body Time-delay 5 x 15 mm
Standard
1/2A through 7A, 350VAC, UL and CSA Recognized
Type
4.5x14.5mm
Voltage Rating
350 VAC
Package Dimensions (L x W x H)
4 in x 0.18 in x 0.18 in
Package Dimensions (L x W x H)
101.6 mm x 4.572 mm x 4.572 mm
Package Weight (Imperial)
0.010 lb
Package Weight (Metric)
0.005 kg
Miniature fuse SMG-V - Fast Acting 350VAC 3.5A

SMG-V3-1/2

Miniature fuse SMG-V - Fast Acting 350VAC 3.5A
SLO-BLO GLASS AXIAL V-PACK 4A. The 3AG Slo-Blo® fuse solves a broad range of application requirements while offering reliable performance and costeffective circuit protection. Features: 313 and 315 series fuses have time-delayed in the overload range, which provides superior protection inductive loads such as motors, transformers, and solenoids. 3AG indicating fuses instantly identify themselves upon opening by showing a discoloration of their glass bodies. Guesswork and time-consuming circuit testing is eliminated. This unique design offers the same quality performance characteristics as the standard 3AG fuse design.

0313004.VXIDP

SLO-BLO GLASS AXIAL V-PACK 4A. The 3AG Slo-Blo® fuse solves a broad range of application requirements while offering reliable performance and costeffective circuit protection. Features: 313 and 315 series fuses have time-delayed in the overload range, which provides superior protection inductive loads such as motors, transformers, and solenoids. 3AG indicating fuses instantly identify themselves upon opening by showing a discoloration of their glass bodies. Guesswork and time-consuming circuit testing is eliminated. This unique design offers the same quality performance characteristics as the standard 3AG fuse design.

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.