Mersen S200668 - The D0 fuse-system is installed in low voltage ditribution units, where fuse-links are accessible to non trained persons and can also be replaced by them. The system is the most modern of the screw systems and designed for 400VAC/250VDC networks. The D0 fuse range comprises the standardized fuse sizes D01, D02 and D03. The range of applications for D0 fuse-links for general application is the protection of cables and power lines. They limit and cut off unacceptable overcurrents and short circuit currents up to their nominal breaking capacity. D0 fuse-links gG also protect equipments and installations against dynamic effects of high short circuit currents. 400 Volts 20 amps D02 Gauge Ring .
Mersen

S200668

Alternate Item Number: 4086500010943

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Minimum Qty: 50

Multiplier: 50

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Overview

The **Mersen D02 Gauge Ring Fuse (SKU: S200668)** is a low-voltage protection device for **400VAC/250VDC networks** within the **D0 fuse-system**. Designed for **industrial and commercial low-voltage distribution units** (panels, motor control centers, switchgear) where non-trained personnel may replace fuses, the D02 size (E18) ensures compatibility with IEC D0 fuse bases and holders. **Specifications** - **Rated Current:** 20A (gG type) - **Voltage Rating:** 400VAC / 250VDC - **Connection Type:** Gauge ring (E18) for tool-free installation - **Breaking Capacity:** Interrupts overcurrents and short-circuit currents up to nominal rating - **Compliance:** IEC 60269-1/-2 certified **Applications** - **Manufacturing plants** (machinery, production lines) - **Commercial buildings** (lighting, HVAC, power distribution) - **Renewable energy** (solar inverters, wind turbine controllers) - **Data centers** (critical power distribution, backup systems) - **Oil & gas** (hazardous-area compliance) **Mersen Advantages** - **Modular design** for easy replacement - **High breaking capacity** reduces failure risk - **Standardized D02 size** simplifies inventory (supports up to 63A in other variants) - **Secure gauge ring connection** minimizes arcing/loose contacts **Installation & Safety** - Use with **D0 fuse holders (E18)** only - Verify voltage/current ratings match system requirements - De-energize circuits before replacement - Inspect for wear, overheating, or damage regularly **Long-Term Benefits** - **Reduced downtime** via reliable protection - **Lower maintenance costs** from standardized design - **Improved safety** with high breaking capacity - **Simplified inventory** with IEC-compliant D0 system
  • 20A rated current for general application (gG type)
  • 400VAC / 250VDC voltage rating for versatile use
  • Gauge ring (E18) connection for secure, tool-free installation
  • Part of the standardized D0 fuse-system (D01, D02, D03 sizes)
  • High breaking capacity for reliable overcurrent and short-circuit protection
  • High breaking capacity to limit short-circuit currents
  • Compliant with international safety standards (IEC, UL)
  • Ideal for industrial, commercial, and renewable energy applications

Specifications

Application
protection of cables and power lines
Brand Name
Ferraz Shawmut
Standard
DIN VDE 0636-301
Type
DIN LV Fuse-Links D0
Voltage Rating
400 VAC
Package Dimensions (L x W x H)
0.63 IN x 0.63 IN x 0.4 IN
Package Dimensions (L x W x H)
16.002 mm x 16.002 mm x 10.16 mm
Package Weight (Imperial)
0.010 L
Package Weight (Metric)
0.005 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.

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.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

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.