Mersen STG2 - Miniature fuse STG - Time-Delay 350VAC 2A
Mersen

STG2

Alternate Item Number: STG2

UPC: 782001245405

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Minimum Qty: 5

Multiplier: 5

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Overview

The Mersen STG2 miniature time-delay fuse (SKU: STG2) is a glass-body fuse designed for reliable overcurrent protection in industrial and commercial electrical systems. Rated at 350VAC and 2A, this 5x15mm fuse combines precision engineering with robust construction to safeguard sensitive equipment from damaging fault currents while minimizing nuisance tripping. Engineered for time-delay operation, the STG2 allows brief inrush currents—common in motors, transformers, and capacitive loads—to pass without interruption, ensuring continuous operation during startup or transient conditions. Its compact glass body meets stringent international standards, providing excellent arc suppression and visual inspection capability for maintenance teams. The STG2 is ideal for control panels, power supplies, instrumentation, and automation systems across industries such as manufacturing, energy, telecommunications, and transportation. The time-delay characteristic is particularly valuable in applications with inductive loads, where startup surges could otherwise cause premature fuse failure. Installation is straightforward, with clear polarity markings and a secure fit in standard fuse holders. The 5x15mm form factor is a standard in miniature fuse applications, offering compatibility with a wide range of fuse holders and clips.
  • Glass body construction for excellent arc suppression and visual inspection
  • Time-delay operation allows brief inrush currents to pass without interruption
  • Rated at 350VAC and 2A for reliable overcurrent protection
  • Compact 5x15mm size fits standard fuse holders and clips
  • Ideal for motors, transformers, and capacitive loads in industrial applications

Specifications

AC Voltage Rating
350 V
Amperage Rating
2 A
Application
Electronic circuits
Brand Name
Mersen
Class
Supplemental
Connection
Ferrule
Mounting
Clip
Size
0.57 x 0.18 in
Size
14.478 x 4.572 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)
0.57 in x 0.18 in x 0.18 in
Package Dimensions (L x W x H)
14.478 mm x 4.572 mm x 4.572 mm
Package Weight (Imperial)
0.010 lb
Package Weight (Metric)
0.005 kg
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SMG-V2

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Miniature fuse STG-V - Time-Delay 350VAC 2A

STG-V2

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Miniature fuse SMG - Fast Acting 350VAC 2A

SMG2

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STG2-1/2

Miniature fuse STG - Time-Delay 350VAC 2.5A
Miniature fuse STG-V - Time-Delay 350VAC 2.5A

STG-V2-1/2

Miniature fuse STG-V - Time-Delay 350VAC 2.5A
Miniature fuse SMG-V - Fast Acting 350VAC 1.5A

SMG-V1-1/2

Miniature fuse SMG-V - Fast Acting 350VAC 1.5A
Miniature fuse SMG-V - Fast Acting 350VAC 2.5A

SMG-V2-1/2

Miniature fuse SMG-V - Fast Acting 350VAC 2.5A
Miniature fuse STG - Time-Delay 350VAC 1.5A

STG1-1/2

Miniature fuse STG - Time-Delay 350VAC 1.5A
Miniature fuse STG - Time-Delay 350VAC 1.25A

STG1-1/4

Miniature fuse STG - Time-Delay 350VAC 1.25A
Miniature fuse STG-V - Time-Delay 350VAC 1.25A

STG-V1-1/4

Miniature fuse STG-V - Time-Delay 350VAC 1.25A
Miniature fuse STG - Time-Delay 350VAC 3A

STG3

Miniature fuse STG - Time-Delay 350VAC 3A
Miniature fuse STG-V - Time-Delay 350VAC 1A

STG-V1

Miniature fuse STG-V - Time-Delay 350VAC 1A

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.