Mersen R085253 Square Body High-Speed Fuse Protistor® Size 120 gR 750VDC IEC 160A With Striker Flush…
Alternate Item Number: D120GC75V160TF
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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
- Square body design with flush metric threads for secure mounting in confined spaces
- 160A rated current with 750VDC (IEC) operation for high-performance DC systems
- 160kA rated breaking capacity and 330W power dissipation at rated current
- Integrated striker for visual/electrical fault indication and rapid system recovery
- Compliant with IEC 60269-4 and REACH standards for industrial and railway safety
- Designed for elevated temperature operation in DC circuits
- Lower I²t minimizes damage to protected components during faults
- Compliant with IEC standards for semiconductor protection
- Typical applications: traction power systems, railway auxiliary circuits, industrial DC drives
Specifications
Amperage Rating | 160 A |
Application | Protection of inverters Protection of motor drives Protection of UPS systems Railway power and auxiliary circuits 750VDC or less equipments |
Brand Name | Mersen |
Case | Ceramic |
Connection | End Contact with Threaded Holes |
Connection Type | Flush Metric Threads |
Connection Type | metric threads |
Current Rating | 160 A |
Current Rating | 160A |
DC Voltage Rating | 750 V |
Mounting | Bolted |
Mounting Type | Fuse holder |
Mounting Type | Flush ends |
Series | Protistor® |
Size | Size 120 gR |
Size | Size 120 |
Size | 5 x 1.57 x 1.77 in |
Size | 127 x 40 x 45 mm |
Special Features | Multiple body sizes and terminals or blades combination Very low I²t Extremely fast acting Eliminate all overloads Excellent cycling capability |
Standard | EU conformity REACH compliant IEC 60269-4 Compliance |
Sub Brand | Protistor® |
Type | Square Body High-Speed Fuse-Links DC Protection |
Type Of Indicators | Striker |
Voltage Rating | 750 V |
Wattage | 27 W |
Package Dimensions (L x W x H) | 5 in x 1.57 in x 1.77 in |
Package Dimensions (L x W x H) | 127 mm x 40 mm x 45 mm |
Package Weight (Imperial) | 1.433 lb |
Package Weight (Metric) | 0.650 kg |
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Frequently Asked Questions
What is the rated breaking capacity of the R085253?
The R085253 has a rated breaking capacity of 160kA, ensuring reliable fault isolation in high-current DC systems.
What voltage rating does the R085253 support?
The R085253 is rated for 750VDC (IEC), suitable for high-voltage DC applications.
What is the power dissipation at rated current?
The power dissipation at rated current is 330W, optimizing thermal management in continuous duty cycles.
What applications is the R085253 designed for?
The R085253 is designed for semiconductor protection, railway power systems, UPS systems, motor drives, and DC switchgear.
Does the R085253 include a striker mechanism?
Yes, the R085253 features an integrated striker for remote fuse operation indication and fault diagnosis.
What is the current rating range for Size 120 gR fuses?
Size 120 gR fuses support a current rating range of 50A to 160A.
Is the R085253 compliant with IEC standards?
Yes, the R085253 complies with IEC 60269-4 for semiconductor protection fuses.
What is the I²t value of the R085253?
The R085253 has very low I²t values, minimizing damage to protected components during short circuits.
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.