Mersen Q090473 Square Body High-Speed Fuse Protistor® Size 2x122 gR 750VDC IEC 500A With Striker metric…
Alternate Item Number: D2122GC75V500TF
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Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- 750VDC (IEC) rated for high-power DC applications
- 500A current rating with gR speed/characteristic for semiconductor protection
- Square body design with metric threads for striker integration
- Extremely fast acting with very low I²t to minimize component damage
- Operates efficiently at elevated temperatures with lower watts loss
Specifications
Amperage Rating | 500 A |
Application | Protection of inverters Protection of motor drives Protection of UPS systems Railway power and auxiliary circuits Similar 750VDC or less equipments |
Brand Name | Mersen |
Case | Ceramic |
Connection Type | metric threads |
Current Rating | 500 A |
DC Voltage Rating | 750 V |
Mounting | Bolted |
Mounting Type | Metric threads with striker |
Mounting Type | Striker |
Mounting Type | metric threads |
Series | Protistor® |
Size | Size 2x122 |
Size | 5.83 x 5.16 x 2.48 in |
Size | 148 x 131 x 63 mm |
Size | 2x122 |
Special Features | Multiple body sizes and terminals or blades combination Very low I²t Extremely fast acting Eliminate all overloads Excellent cycling capability |
Sub Brand | Protistor® |
Type | Square Body High-Speed Fuse-Links DC Protection |
Type Of Indicators | Striker |
Voltage Rating | 750 V |
Wattage | 94 W |
Package Dimensions (L x W x H) | 5.83 in x 5.16 in x 2.48 in |
Package Dimensions (L x W x H) | 148 mm x 131 mm x 63 mm |
Package Weight (Imperial) | 6.173 lb |
Package Weight (Metric) | 2.800 kg |
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Frequently Asked Questions
What is the rated voltage for these Protistor fuses?
The rated voltage for these Protistor fuses (sizes 2x122 and 2x123 gR) is 750 VDC according to IEC standards.
What is the ampere range for the Protistor gR fuses?
The ampere range for these Protistor gR fuses is from 500 A to 1600 A.
What is the characteristic of these Protistor fuses?
The speed/characteristic of these Protistor fuses is gR.
What is the weight of the size 2x122 fuse?
The size 2x122 fuse weighs 2.8 kg.
What is the weight of the size 2x123 fuse?
The size 2x123 fuse weighs 4.26 kg.
What is the power dissipation for the 500A size 2x122 fuse?
The power dissipation at In for the 500A size 2x122 fuse is 94 W.
What is the maximum operating current for the 1600A fuse?
The maximum operating current for the 1600A size 2x123 fuse is 1300 A.
What is the breaking capacity of these fuses?
The rated breaking capacity for these fuses is 100 kA AC (IEC).
What are the main applications for these fuses?
These fuses are used for protection of inverters, motor drives, UPS systems, and railway power and auxiliary circuits.
What are the dimensions for size 2x122 threads terminals (TTF)?
Size 2x122 TTF dimensions include a diameter of approximately 11mm, a length of 148 ± 2.1mm, and various terminal dimensions.
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.