Mersen R302074 Square Body High-Speed Fuse Protistor® Size 70 gR 600VDC IEC 650VDC UL 63A With Striker…
Alternate Item Number: D70GB60V63TF
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Overview
- 63A continuous current rating with 600VDC/650VDC voltage capability
- Size 70 gR classification per IEC 60269-4 for semiconductor protection
- Pure silver fuse elements with solidified sand arcing control for low I²t (210 A²s pre-arcing, 1680 A²s clearing)
- 126 kA AC breaking capacity with 26W power dissipation at rated current
- Striker for visual trip indication and flush ends with metric threads for secure mounting
Specifications
Amperage Rating | 63 A |
Application | Protection of inverters, motor drives, UPS systems and similar 600V or less equipments. |
Brand Name | Mersen |
Case | Ceramic |
Connection | End Contact with Threaded Holes |
Connection Type | Flush ends with metric threads |
Current Rating | 63A |
DC Voltage Rating | 650 V |
Material | Pure Silver |
Mounting | Bolted |
Mounting Type | Square Body |
Series | Protistor® |
Size | 2.91 x 1.54 x 1.81 in |
Size | 74 x 39 x 46 mm |
Size | Size 70 gR |
Special Features | Multiple body sizes and terminals or blades combination 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 E76491 CCC GB 1359.4 |
Sub Brand | Protistor® |
Type | Square Body High-Speed Fuse-Links DC Protection |
Type Of Indicators | Striker |
Voltage Rating | 650 V |
Voltage Rating | 600VDC/650VDC |
Wattage | 18 W |
Package Dimensions (L x W x H) | 2.91 in x 1.54 in x 1.81 in |
Package Dimensions (L x W x H) | 74 mm x 39 mm x 46 mm |
Package Weight (Imperial) | 0.747 lb |
Package Weight (Metric) | 0.339 kg |
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Frequently Asked Questions
What voltage ratings does the R302074 support?
The R302074 supports 600VDC continuous operation and has an IEC rating of 650VDC. It is designed for equipment operating at 600V or less.
What applications is the R302074 suitable for?
The R302074 is designed for protection in inverters, motor drives, UPS systems, and other power conversion equipment operating at 600V or less.
What materials are used in the R302074 fuse elements?
The fuse elements are made of pure silver with die-cut design, embedded in solidified sand for superior arcing control.
What is the interrupting rating of the R302074?
The R302074 has a rated breaking capacity of 126 kA AC, ensuring reliable interruption of fault currents in power conversion systems.
What standards does the R302074 comply with?
The R302074 complies with IEC 60269-4 (gR class) and is UL/CSA recognized under file E76491.
What is the I²t rating for the R302074?
The pre-arcing I²t is 210 A²s and the clearing I²t at rated voltage is 1680 A²s, providing precise protection for semiconductor devices.
What is the power dissipation at rated current?
The power dissipation at rated current (63A) is 26W, ensuring efficient operation in power electronics applications.
Does the R302074 include a trip indicator?
Yes, the R302074 features a striker for visual trip indication. A low-voltage trip-indicator option is also available for remote signaling.
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.