Mersen GGU25 - 125VAC rated GGU fuses have midget fuse dimensions (1-1/2" x 13/32"). 20A and above have ceramic bodies, allowing use in higher ambient temperature conditions than other similar fuses. (Not for Branch Circuit Protection). 125 Volts 25 Amps   .
Mersen

GGU25

Alternate Item Number: 782001765101

UPC: 782001765101


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Overview

The Mersen GGU25 (SKU: GGU25) is a fast-acting midget fuse engineered for reliable industrial overcurrent protection. Rated for 125VAC and 25A, this fuse features a robust ceramic body, specifically designed for applications requiring operation in higher ambient temperature conditions compared to standard glass-bodied fuses. Its compact dimensions of 1-1/2" x 13/32" (10 mm x 38 mm) ensure compatibility with standard midget fuse holders and panels. The GGU series offers medium lag characteristics, providing effective circuit protection for circuits up to 30A and 125VAC. It boasts an interrupting rating of 10kA I.R., ensuring safety during fault conditions. The ceramic construction of the GGU25 is critical for enhanced thermal management, a vital factor for consistent and dependable performance in demanding industrial environments. Typical applications include protection for control panels, motor drives, and power supplies. This fuse is UL Recognized for its 20A-30A ratings, underscoring its adherence to industry safety standards. Please note that the Mersen GGU25 is not intended for branch circuit protection. Mersen GGU fuses are proudly distributed by Gross Automation. For further technical specifications or to inquire about bulk orders, please contact Gross Automation at +1 (262) 252-1600 or [email protected]. The GGU25 is manufactured in the USA.
  • Fast-acting midget fuse with 125VAC and 25A rating
  • Durable ceramic body for higher ambient temperature applications
  • Standard 1-1/2" x 13/32" (10 mm x 38 mm) dimensions
  • Medium lag for protection of circuits up to 30A and 125VAC
  • 10kA I.R. interrupting rating for fault protection
  • UL Recognized for 20A-30A ratings
  • Not for branch circuit protection
  • Manufactured in the USA

Specifications

Amperage Rating
25 A
Application
General Purpose 125VAC Circuits Supplemental Protection
Brand Name
Ferraz Shawmut
Class
Midget
Connection
Ferrule
Connection Type
Ferrule
Current Rating
25 A
Interrupt Rating
10 kA
Material
Ceramic
Mounting
Clip
Series
GGU
Size
1-1/2" x 13/32" (10 mm x 38 mm)
Special Features
Glass body on 3-15A makes status of fusible element clearly visible Ceramic body on 20-30A allows use in higher temperature applications Medium Lag for protection of circuits up to 30A and 125VAC Can be used with UltraSafe Fuseholders
Standard
UL Listed to Standard 248-14 (3-15A)
Type
Supplemental Protection
Voltage Rating
125 VAC
Package Dimensions (L x W x H)
1.5 IN x 0.406 IN x 0.406 IN
Package Dimensions (L x W x H)
3.81 cm x 10.3124 mm x 10.3124 mm
Package Weight (Imperial)
0.012 L
Package Weight (Metric)
0.005 kg
125VAC rated GGU fuses have midget fuse dimensions (1-1/2" x 13/32"). 20A and above have ceramic bodies, allowing use in higher ambient temperature conditions than other similar fuses. (Not for Branch Circuit Protection). 125 Volts 4 Amps   .

GGU4

125VAC rated GGU fuses have midget fuse dimensions (1-1/2" x 13/32"). 20A and above have ceramic bodies, allowing use in higher ambient temperature conditions than other similar fuses. (Not for Branch Circuit Protection). 125 Volts 4 Amps .
125VAC rated GGU fuses have midget fuse dimensions (1-1/2" x 13/32"). 20A and above have ceramic bodies, allowing use in higher ambient temperature conditions than other similar fuses. (Not for Branch Circuit Protection). 125 Volts 3 Amps   .

GGU3

125VAC rated GGU fuses have midget fuse dimensions (1-1/2" x 13/32"). 20A and above have ceramic bodies, allowing use in higher ambient temperature conditions than other similar fuses. (Not for Branch Circuit Protection). 125 Volts 3 Amps .
125VAC rated GGU fuses have midget fuse dimensions (1-1/2" x 13/32"). 20A and above have ceramic bodies, allowing use in higher ambient temperature conditions than other similar fuses. (Not for Branch Circuit Protection). 125 Volts 20 Amps   .

GGU20

125VAC rated GGU fuses have midget fuse dimensions (1-1/2" x 13/32"). 20A and above have ceramic bodies, allowing use in higher ambient temperature conditions than other similar fuses. (Not for Branch Circuit Protection). 125 Volts 20 Amps .

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.