Mersen D330030 - The 690/700V Protistor® fuse-links provide maximum flexibility in equipment design and ultimate protection for small power conversion equipment. The Protistor® gR have been engineered to provide full range protection to eliminate all overloads and semiconductor fault. Fuses are assembled with pure silver, die-cut elements embedded in solidified sand, which helps control arcing characteristics for a lower I2t and high interrupting rating level. All contact surfaces are silver plated and all hardware is non-magnetic. Each fuse-link can be equipped with a low voltage trip-indicator which can operate a field mountable microswitch. 690 Volts 20 Amps 000 gRB D08 series.
Mersen

D330030

Alternate Item Number: 3605340360912

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Overview

The Mersen Protistor® D08 series fuse-link (SKU: D330030) offers robust protection for small power conversion equipment, operating at 690/700V and rated for 20 Amps. Engineered with pure silver, die-cut elements embedded in solidified sand, these fuse-links deliver controlled arcing characteristics, resulting in a lower I²t and a high interrupting rating of 200 kA @ 690 V. This design ensures full-range protection, effectively eliminating all overloads and semiconductor faults, crucial for maintaining the integrity of sensitive power electronics. The Protistor® fuse-links are designed for maximum flexibility in equipment design. They feature silver-plated contact surfaces and non-magnetic hardware, enhancing reliability and performance. The gRB class rating, as per VDE 636-23, signifies their suitability for semiconductor protection. Each fuse-link in the D08 series can be equipped with an optional low-voltage trip-indicator. This indicator can operate a field-mountable microswitch, providing valuable status monitoring capabilities. The fuse-links are constructed to meet IEC standard 269-4 for power semiconductor protection and IEC 33 for 690V ratings. Key specifications include: - **Voltage Rating:** 690/700 V - **Current Rating:** 20 A - **Class:** gRB - **Series:** D08 - **Interrupting Rating:** 200 kA @ 690 V - **Pre-arcing I²t:** 17.1 A²s - **Melting I²t @ 1 ms:** 110 A²s - **Power Dissipation:** 5.5 W These fuse-links are manufactured in the US and are ideal for applications requiring reliable and precise protection of semiconductor devices in power conversion systems.
  • Full-range protection against overloads and semiconductor faults
  • Pure silver, die-cut elements for controlled arcing and low I²t
  • High interrupting rating: 200 kA @ 690 V
  • 690/700V voltage rating suitable for power conversion equipment
  • Optional low-voltage trip-indicator for microswitch operation

Specifications

Amperage Rating
20 A
Application
Protection of inverters, motor drives, UPS systems and similar 690V or less equipments.
Brand Name
Ferraz Shawmut
Special Features
gR Class according to IEC 60269-4 and VDE 636-23 Low I²t for improved semiconductor protection Extremely fast acting Eliminate all overloads Excellent cycling capability
Standard
IEC 60269-4 Compliance UL/CSA Recognized Component AC: UL Guide No. E76491
Sub Brand
Protistor
Type
Square Body High-Speed Fuse-Links AC Protection
Voltage Rating
690 VAC
Package Dimensions (L x W x H)
3.93 IN x 0.79 IN x 1.51 IN
Package Dimensions (L x W x H)
9.9822 cm x 20.066 mm x 3.8354 cm
Package Weight (Imperial)
0.290 L
Package Weight (Metric)
0.132 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.

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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.