Mersen C079444 Square Body High-Speed Fuse Protistor® Size 70 aR 1200VDC IEC 200A With Striker L Brackets
Alternate Item Number: D70SF120V200QF
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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 high-speed fuse-link for semiconductor protection in DC systems
- Size 70 aR-rated, 200A nominal current, 1200VDC operation
- Rated breaking capacity: 126 kA; Pre-arcing I²t: 4730 A²s; Clearing I²t: 38000 A²s
- Striker mechanism signals fuse operation; L-brackets for secure mounting
- Power dissipation: 56W at 200A; Optimized for elevated operating temperatures
Specifications
Amperage Rating | 200 A |
Application | Protection of inverters Protection of motor drives Protection of UPS systems Railway power and auxiliary circuits ESS Battery Rack protection up to 1500 VDC |
Brand Name | Mersen |
Case | Ceramic |
Connection Type | L Brackets |
Current Rating | 200A |
DC Voltage Rating | 1200 V |
Material | Not explicitly stated |
Material | Silver |
Mounting | Bolted |
Mounting Type | Square body, L-brackets |
Mounting Type | Square Body |
Series | Protistor® |
Size | Size 70 |
Size | 6.42 x 1.5 x 2.47 in |
Size | 163 x 38 x 62.7 mm |
Special Features | Extremely fast acting Excellent cycling capability Very low I²t Worldwide acceptability Current Limiting Superior Cycling Ability |
Standard | IEC 60269-1 and IEC 60269-4 Compliance DC UL recognized component UL file E76491 - 20A-215A, @1200VDC, L/R 10ms, 100KA - 20A-215A, @1500VDC, L/R 1-3ms, 100KA GB/T 13539.4-2016 |
Sub Brand | Protistor® |
Type | Square Body High-Speed Fuse-Links DC Protection |
Type Of Indicators | Striker |
Voltage Rating | 1200 V |
Wattage | 65.5 W |
Package Dimensions (L x W x H) | 6.42 in x 1.5 in x 2.47 in |
Package Dimensions (L x W x H) | 163 mm x 38 mm x 62.7 mm |
Package Weight (Imperial) | 1.499 lb |
Package Weight (Metric) | 0.680 kg |
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Frequently Asked Questions
What is the rated DC voltage for Protistor size 70 aR fuses?
The rated DC voltage for these fuses is 1200 VDC according to IEC standards.
What is the ampere range for the Protistor size 70 aR fuses?
The ampere range for these fuses is from 20 A to 215 A.
What is the breaking capacity of these fuses?
The rated breaking capacity for these fuses is 100 kA DC.
What are the typical applications for these semiconductor protection fuses?
These fuses are used for protection of inverters, motor drives, UPS systems, and railway circuits.
What standards do these fuses comply with?
They comply with IEC 60269-1 and IEC 60269-4, and are DC UL recognized components.
What is the maximum total I²t for a 200A Protistor size 70 aR fuse?
The maximum total I²t at 1000V for L/R=15ms is 45 kA²s, and for L/R=45ms is 78.5 kA²s.
What is the power dissipation at rated current for a 200A fuse?
The power dissipation at rated current (200A) for this fuse is 65.5 W.
What is the power dissipation at 0.8 times rated current for a 200A fuse?
The power dissipation at 0.8 times rated current for this fuse is 35 W.
What is the weight of a Protistor size 70 aR fuse?
The weight of a single unit of this fuse is 0.68 kg.
What is the L/R time constant capability at 1200 VDC?
The maximum testing capability for the L/R time constant at 1200 VDC is 10 ms.
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.