Mersen Q217640 High Speed Fuse-link D D0 RECTICUR Size DIII gR 500VAC 440VDC IEC 50A
Alternate Item Number: DIIIGR50V50
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Overview
- DIII size, gR class high-speed fuse-link for semiconductor protection
- Rated 50A, 500VAC / 440VDC
- Ultra-fast acting ('gR') for diodes, thyristors, and AC/DC motor drives
- Insulated body for high mechanical and thermal impacts
- Nickel-plated/silver-plated copper alloy contacts, clear operation indicator
Specifications
AC Voltage Rating | 500 V |
Amperage Rating | 50 A |
Brand Name | Mersen |
Case | Ceramic |
DC Voltage Rating | 440 V |
Mounting | Clip |
Size | 1.97 x 1.06 in |
Size | 50 x 27 mm |
Special Features | Insulated body suitable for high mechanical and thermal impacts Top and bottom contacts made of nickel-plated/silver-plated copper alloy Safe cut off short circuits and over currents due special design of fuse element Clear indication of operation condition due coloured indicator on top contact Low power dissipation Optimized size Resistant to aging |
Standard | IEC 60 269-4 DIN EN 60269-4 (VDE 0636-4) DIN VDE 0636-3 |
Type | IEC High-Speed D & D0 Fuse-Links AC-DC Protection |
Voltage Rating | 500 V |
Wattage | 10 W |
Package Dimensions (L x W x H) | 1.97 in x 1.06 in x 1.06 in |
Package Dimensions (L x W x H) | 50 mm x 27 mm x 27 mm |
Package Weight (Imperial) | 0.110 lb |
Package Weight (Metric) | 0.050 kg |
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Frequently Asked Questions
What is the voltage rating for RECTICUR D gR fuses?
These fuses are rated for 500VAC (IEC) and 440VDC (IEC).
What is the current range for RECTICUR D gR fuses?
The rated current range for these fuses is from 2A up to 200A.
What standards do RECTICUR D gR fuses comply with?
They comply with IEC 60 269-4, DIN EN 60269-4 (VDE 0636-4), and DIN VDE 0636-3.
What is the breaking capacity of these semiconductor protection fuses?
The rated breaking capacity for these fuses is 100 kA AC.
What is the purpose of the 'gR' designation for these fuses?
The 'gR' designation indicates they are ultra-fast acting ranges dedicated to semiconductor protection.
What types of components are these fuses used to protect?
They are used for protecting components such as diodes, thyristors, or AC/DC motor drives.
What are the available sizes for the D fuse-system?
The D system comprises the sizes DII, DIII, DIV, and DV.
What is the power dissipation for a 50A RECTICUR D gR fuse?
The power dissipation at In for the 50A fuse (item number Q217640) is 10 W.
What is the pre-arcing I²t for a 50A RECTICUR D gR fuse?
The pre-arcing I²t for the 50A fuse (item number Q217640) is 900 A²s.
What is the operating I²t at rated voltage for a 50A fuse?
The operating I²t at rated voltage for the 50A fuse (item number Q217640) is 2050 A²s.
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.