Mersen A2D100R Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 100A Blade SmartSpot® Amp-Trap 2000®
Alternate Item Number: A2D100R
UPC: 782001991012
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Overview
- Class RK1 time-delay fuse rated 100A at 250VAC/DC
- IEC Type 2 "no damage" protection for mains, feeders, and branch circuits
- SmartSpot® visual blown fuse indicator for quick identification
- High interrupt rating: 200kA AC / 100kA DC
- Current-limiting design reduces Arc Flash energy exposure
- Rejection-style design prevents incorrect fuse replacement
- Compatible with older Class H, K, or RK5 fuse replacements
Specifications
AC Voltage Rating | 250 V |
Amperage Rating | 100 A |
Application | Motors Safety switches Transformers Branch circuit protection Disconnects Control panels All general-purpose circuits |
Body Material | PolyTube |
Brand Name | Mersen |
Class | Class RK1 |
Connection | Blade |
Connection Material | Tin-Plated Copper |
Interrupt Rating | 200 kA |
Mounting | Clip |
Size | 5.88 x 1.06 in |
Size | 149.352 x 26.924 mm |
Size | 5.88 x 1.06;149.352 x 26.924 in;mm |
Special Features | Non-indicating or Solid state SmartSpot visual blown fuse indicator Time-delay for motor starting and transformer inrush currents without nuisance opening 600VAC & 600VDC dual rated 300kA interrupting rating - self-certified, UL witnessed tests Extremely current-limiting for low peak let-thru current Recommended for Arc Flash energy reduction Easy 2-to-1 selectivity for prevention of nuisance shut downs and “black outs” Rejection-style design prevents replacement errors (when used with recommended fuse blocks) High-visibility orange label gives instant brand recognition Reduced inventory by taking the place of class RK5, K, and H fuses Metal-embossed date and catalog number for easier traceability and lasting identification Fiberglass body provides dimensional stability in harsh industrial settings |
Standard | UL listed to standard 248-12 File E2137 DC listed to UL standard 248 CSA certified to standard C22.2 No. 248.12 |
Sub Brand | Amp-Trap 2000® |
Type | Class RK1 |
Type Of Indicators | SmartSpot® |
Voltage Rating | 250 VAC |
Package Dimensions (L x W x H) | 5.88 in x 1.06 in x 1.06 in |
Package Dimensions (L x W x H) | 149.352 mm x 26.924 mm x 26.924 mm |
Package Weight (Imperial) | 0.295 lb |
Package Weight (Metric) | 0.134 kg |
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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 are the voltage and amperage ratings for A2D-R fuses?
A2D-R fuses are rated for 250VAC/DC and amperage from 1/10 to 600A.
What is the interrupting rating for A2D-R fuses?
The interrupting rating is 200kA I.R. AC and 100kA I.R. DC.
What is the interrupting rating for A6D-R fuses?
The interrupting rating for A6D-R fuses is 200kA I.R. AC and 100kA I.R. DC, self-certified for 300kA I.R.
What are the voltage and amperage ratings for A6D-R fuses?
A6D-R fuses are rated for 600VAC/DC and amperage from 1/10 to 600A.
What applications are A2D-R fuses suitable for?
They are suitable for motors, safety switches, transformers, branch circuit protection, disconnects, control panels, and general-purpose circuits.
What approvals do the A2D-R fuses have?
A2D-R fuses are UL listed to standard 248-12 and CSA certified to standard C22.2 No. 248.12.
What type of protection do A2D-R fuses offer?
They provide IEC Type 2 No Damage protection with time-delay characteristics and current-limiting ability.
What are the benefits of using A2D-R fuses?
Benefits include time-delay for inrush currents, current-limiting, 2-to-1 selectivity, and a rejection-style design.
Are there visual indicators available for blown A2D-R fuses?
Yes, non-indicating or solid state SmartSpot® visual blown fuse indicators are available for 8-600A ratings.
Can A2D-R fuses replace other fuse classes?
Yes, they can replace Class RK5, K, and H fuses, reducing inventory.
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.