Authorized Mersen Distributor
Mersen GFN1-1/2 - Fuse GFN - Midget - Time-Delay 250VAC 1.5A Ferrule Visual Indicator
More images

Mersen GFN1-1/2 Fuse GFN - Midget - Time-Delay 250VAC 1.5A Ferrule Visual Indicator

Alternate Item Number: GFN1-1/2

UPC: 782001701369


Documents & Media
Technical DrawingLine DrawingSpecification Sheet

Contact for Pricing

Minimum Qty: 10

Multiplier: 10

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Mersen GFN1-1/2 is a time-delay midget fuse designed for supplemental circuit protection where visual indication of a blown fuse is critical. This 1.5A fuse operates at 250VAC and features a built-in pin indicator that visibly signals when the fuse has opened the circuit. The indicator can also actuate a switch for remote annunciation, enabling system monitoring and safety without additional components. With a 12-second time-delay at 200% of rated current, the GFN1-1/2 provides reliable overload protection while minimizing nuisance tripping. The fuse measures 1-1/2" x 13/32" (10 mm x 38 mm), fitting standard midget fuse holders. Part of Mersen's GFN series, this fuse is rated for 200kA interrupting rating at 250VAC and is available in amp ratings from 1/10A to 30A. Primary applications include solenoid circuits and control circuits where time-delay protection and clear fault indication are required. Note: These fuses are intended for supplemental protection only and not for branch circuit protection.
  • 1.5A rating, 250VAC operation with 200kA interrupting rating
  • 12-second time-delay at 200% rated current for overload protection
  • Built-in pin indicator provides visual fault indication and remote switch actuation
  • Dimensions: 1-1/2" x 13/32" (10 mm x 38 mm) for standard midget fuse holders
  • Available in amp ratings from 1/10A to 30A for versatile circuit protection

Specifications

AC Voltage Rating
250 V
Amperage Rating
1.5 A
Application
For supplemental protection of circuits where time-delay and blown fuse indication are required, such as solenoid circuits or control circuits.
Body Material
PolyTube
Brand Name
Mersen
Class
Midget
Connection
Ferrule
Connection Material
Tin-Plated Copper
Connection Type
Ferrule
Current Rating
1.5 A
Fuse Class
Midget
Interrupt Rating
0.2 kA
Mounting
Clip
Series
GFN
Size
1-1/2" x 13/32" (10 mm x 38 mm)
Size
1.5 x 0.41 in
Size
38.1 x 10.312 mm
Special Features
Pin indicator provides visual indication of open fuse or actuates switch for remote signaling Numerous ratings for a wide variety of applications 12 second time-delay at 200 rating Can be used with UltraSafe™ fuse holders (1/10 - 10A) 1 1/2" x 13/32" (10 mm x 38 mm) dimensions
Standard
UL Listed to standard 248-14 (1/10 to 15A) File E33925 CSA Certified to Standard C22.2 No. 248.14 (1/10 to 15A)
Type
Midget Fuses
Type Of Indicators
Visual Indicator
Voltage Rating
250 VAC
Package Dimensions (L x W x H)
1.5 in x 0.41 in x 0.41 in
Package Dimensions (L x W x H)
38.1 mm x 10.312 mm x 10.312 mm
Package Weight (Imperial)
0.012 lb
Package Weight (Metric)
0.005 kg
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip

30323R

Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

Frequently Asked Questions

What are the voltage ratings for GFN midget indicating fuses?

GFN fuses are rated for 250VAC (0.1-10A), 125VAC (12-15A), and 32VAC (20-30A).

What is the time-delay characteristic of these fuses?

These time-delay fuses provide a 12-second delay at 200% of their rating.

What is the interrupting rating (I.R.) for GFN fuses?

The I.R. is 200kA at 250VAC for 0.1-10A, 10kA at 125VAC for 0.1-15A, and 10kA at 32VAC for 20-30A.

What are the physical dimensions of the GFN fuses?

The GFN fuses have dimensions of 1 1/2" x 13/32", which is equivalent to 10 mm x 38 mm.

What is the purpose of the pin indicator on GFN fuses?

The pin indicator provides a visual indication of an open fuse or can actuate a switch for remote signaling.

Are GFN fuses suitable for branch circuit protection?

No, these fuses are not intended for branch circuit protection.

What applications are GFN fuses recommended for?

They are recommended for supplemental protection of circuits requiring time-delay and blown fuse indication, such as solenoid or control circuits.

What fuse holders are compatible with GFN fuses?

GFN fuses (1/10 - 10A) can be used with Mersen's UltraSafe™ fuse holders.

What are the available amperage ratings for GFN fuses?

GFN midget indicating fuses are available in ratings from 1/10 through 30A.

What approvals do GFN fuses have?

GFN fuses (1/10 to 15A) are UL Listed to standard 248-14 and CSA Certified to Standard C22.2 No. 248.14.

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.