Mersen GW15 - Mersen plug fuses are intended for industrial and residential applications. Non time-delay fuses are available for receptacle and lighting circuits and time-delay fuses for motor loads. For Canadian requirements, a type P fuse is used for non-motor loads and Type D, for electrical heating and cyclical load circuits. Both fuses have low melting-point temperature elements. Type S plug fuses are time-delay and tamper resistant. 125 Volts 15 Amps GP series. 125 Volts 15 Amps GW series.
Mersen

GW15

Alternate Item Number: 068938793333

UPC: 068938793333

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Specification Sheet

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Overview

The Mersen GW15 (SKU: GW15) is a Type S plug fuse designed for reliable overcurrent protection in both industrial and residential applications. Rated at 125 Volts and 15 Amps, this fuse is part of Mersen's GP and GW series, offering essential safety for receptacle and lighting circuits. It features a time-delay function, crucial for applications with temporary inrush currents like motor loads, preventing nuisance tripping while still providing protection against sustained overloads. The Type S design also incorporates tamper-resistance, ensuring that only compatible fuses can be inserted, enhancing safety in shared or public-access electrical panels. For Canadian requirements, this fuse aligns with Type P for non-motor loads and Type D for electrical heating and cyclical load circuits, all utilizing low melting-point temperature elements for rapid response to fault conditions. The GW15 is CSA certified and tested to withstand short-circuit currents up to 10kA, providing robust protection in demanding environments. Its compact, standardized dimensions facilitate easy installation in existing or new electrical panels, simplifying maintenance and reducing labor costs. Mersen's legacy in electrical protection ensures the GW15 delivers consistent performance and compliance with stringent safety standards, making it a trusted choice for electricians and facility managers prioritizing safety, reliability, and operational continuity.
  • Type S plug fuse for tamper-resistant installations
  • 125 Volts, 15 Amps rating
  • Time-delay functionality for motor and cyclical loads
  • Low melting-point temperature elements for rapid response
  • CSA certified for industrial and residential applications
  • Compatible with GP and GW series fuse holders for easy installation
  • Short-circuit rating up to 10kA for robust industrial applications
  • Engineered by Mersen, a leader in electrical protection solutions

Specifications

Amperage Rating
15 A
Application
Industrial and residential;Receptacle and lighting circuits
Brand Name
Ferraz Shawmut
Class
Plug
Connection
Screw In
Current Rating
15 A
Family Code
145
Family Description
Plug Fuse W
Interrupt Rating
10 kA
Material
Screw In
Mounting
Screw In
Response Time
Fast-Acting
Series
GW
Size
1.126 x 1.29 Inches
Special Features
Available in both time-delay and non time-delay;For Canadian market, available in Type "P" and Type "D"
Standard
CSA;UL
Standard
UL Listed to Standard 248-11, File E76208; CSA Certified, Class 142301, File 15525
Type
Plug Fuse
Voltage Rating
125 V
Voltage Rating
125 VAC
Package Dimensions (L x W x H)
1.29 IN x 1.126 IN x 1.126 IN
Package Dimensions (L x W x H)
3.2766 cm x 2.86 cm x 2.86 cm
Package Weight (Imperial)
0.060 L
Package Weight (Metric)
0.027 kg
Mersen plug fuses are intended for industrial and residential applications. Non time-delay fuses are available for receptacle and lighting circuits and time-delay fuses for motor loads. For Canadian requirements, a type P fuse is used for non-motor loads and Type D, for electrical heating and cyclical load circuits. Both fuses have low melting-point temperature elements. Type S plug fuses are time-delay and tamper resistant. 125 Volts 15 Amps GP series. 125 Volts 15 Amps GT series.

GT15

Mersen plug fuses are intended for industrial and residential applications. Non time-delay fuses are available for receptacle and lighting circuits and time-delay fuses for motor loads. For Canadian requirements, a type P fuse is used for non-motor loads and Type D, for electrical heating and cyclical load circuits. Both fuses have low melting-point temperature elements. Type S plug fuses are time-delay and tamper resistant. 125 Volts 15 Amps GP series. 125 Volts 15 Amps GT series.
The National Electric Code now permits Edison-base fuses to be used only for replacements in existing installations, and then, only when there is no evidence of overfusing or tampering. All new Edison-based fuseholders must have Type S fuse adapters installed before they are placed in service. Designed to prevent installation of wrong size fuses, Type S Adapters (SAO series) screw into Edison-base fuseholders so they may accept Type S fuses. Once installed the adapters cannot be removed. To prevent shunting of open fuses or overfusing, and to reduce nuisance fuse opening, it is recommended that SAO adapters with properly rated SLO or SOO series fuses be installed in all Edison-base fuseholders.

SAO1.25

The National Electric Code now permits Edison-base fuses to be used only for replacements in existing installations, and then, only when there is no evidence of overfusing or tampering. All new Edison-based fuseholders must have Type S fuse adapters installed before they are placed in service. Designed to prevent installation of wrong size fuses, Type S Adapters (SAO series) screw into Edison-base fuseholders so they may accept Type S fuses. Once installed the adapters cannot be removed. To prevent shunting of open fuses or overfusing, and to reduce nuisance fuse opening, it is recommended that SAO adapters with properly rated SLO or SOO series fuses be installed in all Edison-base fuseholders.

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.