Mersen B201251 High Speed Fuse-link D D0 RECTICUR Size DIV gR 500VAC 440VDC IEC 80A
Alternate Item Number: DIVGR50V80
Documents & Media
Contact for Pricing
Minimum Qty: 5
Multiplier: 5
*Contact for lower quantities*
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- High-speed gR fuse-link for semiconductor protection (diodes, thyristors, motor drives)
- Rated 80A, 500VAC/440VDC with breaking capacity 80kA AC and 40kA DC
- DIV size, part of the German DIN standard D fuse-system (sizes DII, DIII, DIV, DV)
- Insulated body with nickel/silver-plated copper contacts for durability and conductivity
- Colored indicator for clear operation status visibility and low power dissipation (5.5W)
Specifications
AC Voltage Rating | 500 V |
Amperage Rating | 80 A |
Brand Name | Mersen |
Case | Ceramic |
Current Rating | 80A |
DC Voltage Rating | 440 V |
Mounting | Clip |
Series | D gR RECTICUR |
Size | 2.48 x 1.46 in |
Size | 63 x 37 mm |
Size | DIV |
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 | 18 W |
Package Dimensions (L x W x H) | 2.48 in x 1.46 in x 1.46 in |
Package Dimensions (L x W x H) | 63 mm x 37 mm x 37 mm |
Package Weight (Imperial) | 0.024 lb |
Package Weight (Metric) | 0.011 kg |
GPM-SRR90
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
C331156
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
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.
Frequently Asked Questions
What voltage ratings does the B201251 support?
The B201251 supports 500VAC and 440VDC voltage ratings as per IEC standards.
What is the breaking capacity of the B201251?
The breaking capacity is 80 kA AC and 40 kA DC at rated voltage.
What is the power dissipation at rated current?
The power dissipation at rated current is 5.5 W.
What applications is the B201251 suitable for?
The B201251 is designed for protecting diodes, thyristors, and AC/DC motor drives.
What is the pre-arcing I²t value for the B201251?
The pre-arcing I²t value is 14000 A²s at rated voltage.
What is the clearing I²t value for the B201251?
The clearing I²t value is 650000 A²s at rated voltage.
What does the 'gR' designation mean?
The 'gR' designation indicates the fuse is suitable for semiconductor protection, with 'R' standing for Rectifier.
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.