Mersen MDC15D20 Fuse MDC15D - DC Distribution 20x65mm 1500VDC 20A Type Ferrule
Alternate Item Number: MDC15D20
UPC: 782001512200
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Minimum Qty: 25
Multiplier: 25
*Contact for lower quantities*
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Rated 1500VDC and 20A for high-voltage DC distribution
- 20x65mm ferrule design for simplified installation and maintenance
- Part of Mersen’s MDC Series for optimal current limitation and coordination
- Compatible with renewable energy, industrial automation, and transportation systems
- Compact design ensures reliable protection in demanding DC applications
Specifications
Amperage Rating | 20 A |
Application | DC Distribution DC Cabling and Bus DC Auxiliary Circuits Electrical Energy Storage EV Charging Critical Power UPS Protection |
Body Material | GMG |
Connection | Ferrule |
Connection Material | Tin-Plated Copper |
Connection Type | Ferrule |
Current Rating | 20 A |
DC Voltage Rating | 1500 V |
Fuse Class | Photovoltaic |
Interrupt Rating | 50 kA |
Mounting | Clip |
Series | MDC Series |
Series | MDC |
Series | MDC DC Distribution Series |
Size | 2.56 x 0.82 in |
Size | 65.024 x 20.726 mm |
Size | 20x65 mm |
Special Features | Designed for DC applications Low watt losses High cycling performance Low & high current interrupting capability Ultra compact size |
Standard | UL Recognized component File E60314 |
Type | DC Fuses |
Voltage Rating | 1500VDC |
Package Dimensions (L x W x H) | 2.56 in x 0.82 in x 0.82 in |
Package Dimensions (L x W x H) | 65.024 mm x 20.726 mm x 20.726 mm |
Package Weight (Imperial) | 0.1100 lb |
Package Weight (Metric) | 0.0500 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 maximum voltage rating for the MDC15D20 fuse?
The MDC15D fuse series is rated for a maximum voltage of 1500VDC.
What is the interrupting rating of the MDC15D20 fuse?
The interrupting rating (I.R.) for this fuse is 50kA at 1500VDC.
What are the available amperage ratings for the MDC15D series?
The MDC15D series is available in amperage ratings from 35A to 65A.
What standards is the MDC15D series recognized under?
The MDC15D series is UL Recognized under File E60314.
What is the DC Minimum Breaking Capacity (MBC) for the MDC15D20?
The DC Minimum Breaking Capacity (MBC) is 2.0 x In @ Rated Voltage.
What is the time constant for the MDC15D20 fuse?
The time constant (L/R) for this fuse is less than or equal to 1ms.
What applications is the MDC15D series suitable for?
The MDC15D series is designed for DC distribution, DC cabling, EV charging, and critical power applications.
What is the melting I2t for the MDC15D35 model?
The melting I2t for the MDC15D35 model is 320 A2s.
What is the clearing I2t at 1000VDC for the MDC15D40?
The clearing I2t at 1000VDC for the MDC15D40 is 3500 A2s.
Does the MDC15D series have low watt losses?
Yes, the MDC15D series is designed with low watt losses.
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.











