Mersen F086186 High-Speed Cylindrical Fuse Protistor® Size 20x127 gR (gRC) 1000VDC IEC 50A With Striker
Alternate Item Number: FD20GC100V50T
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Overview
- 20x127mm (13/16" x 5") cylindrical form factor for global compatibility
- gR class per IEC 60269-4 and VDE 636-23 for DC protection
- Rated 1000VDC, 50A with 50 kA breaking capacity
- Extremely fast-acting with current-limiting performance
- Low I²t for enhanced semiconductor protection and overload elimination
Specifications
Amperage Rating | 50 A |
Application | DC control circuit, measuring & monitoring auxiliaries circuit |
Brand Name | Mersen |
Case | Ceramic |
Connection | Ferrule |
Current Rating | 50A |
DC Voltage Rating | 1000 V |
Mounting | Clip |
Series | Protistor® |
Size | 20x127mm |
Size | 20x127 |
Size | 5 x 0.81 in |
Size | 127 x 20.6 mm |
Special Features | International 20x127mm (13/16" x 5") for worldwide acceptance gR Class according to VDE 636-23 and IEC 60269-4 Low I²t for improved semiconductor protection Eliminate all overloads Extremely fast acting Current limiting Excellent cycling capability |
Standard | UL Recognized for some ratings UL file No. E76491 IEC 60269-4 Compliance |
Sub Brand | Protistor® |
Type | IEC High-Speed Cylindrical Fuse-Links DC Protection |
Type Of Indicators | Striker |
Voltage Rating | 1000 V |
Wattage | 15.5 W |
Package Dimensions (L x W x H) | 5 in x 0.81 in x 0.81 in |
Package Dimensions (L x W x H) | 127 mm x 20.6 mm x 20.6 mm |
Package Weight (Imperial) | 0.214 lb |
Package Weight (Metric) | 0.097 kg |
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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.
Frequently Asked Questions
What is the voltage range for these Protistor fuses?
These Protistor fuses are designed for DC applications with a voltage range of 1000 to 1500 VDC.
What is the product size of these gR fuses?
The product size for these gR fuses is 20x127 mm, which is 13/16 inches x 5 inches.
What is the ampere range for Protistor size 20x127 gR fuses?
The ampere range for these fuses is from 6 A to 63 A.
What class does this Protistor fuse belong to?
This Protistor fuse is classified as gR according to VDE 636-23 and IEC 60269-4 standards.
What are the main applications for these fuses?
These fuses are specially developed for DC applications, including protection of auxiliaries, control circuits, and measuring/monitoring devices.
What is the breaking capacity of these fuses?
The rated breaking capacity for these fuses is 100 kA DC.
What is the power dissipation for a 50A fuse?
The power dissipation at In for the FD20GC100V50T (50 A) fuse is 15.5 W.
What is the weight of a single fuse?
The weight of a single fuse is approximately 97 g or 0.1 kg.
Are these fuses UL Recognized?
Yes, UL Recognition is available for some ratings, with UL file number E76491.
What are the key features of these fuses?
Key features include being extremely fast acting, current limiting, having low I²t for improved semiconductor protection, and excellent cycling capability.
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.