Mersen P079432 Square Body High-Speed Fuse Protistor® Size 72 aR 1200VDC IEC 400A With Striker L Brackets
Alternate Item Number: D72SG120V400QF
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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
- High-speed semiconductor protection
- Rated for 1200VDC and 400A
- 126 kA rated breaking capacity
- aR classification for fast overcurrent protection
- Includes striker mechanism and L brackets for mounting
Specifications
Amperage Rating | 400 A |
Application | Protection of inverters Protection of motor drives Protection of UPS systems Railway power and auxiliary circuits ESS Battery Rack protection up to 1500VDC |
Brand Name | Mersen |
Case | Ceramic |
Connection | L Brackets |
DC Voltage Rating | 1200 V |
Mounting | Bolted |
Size | 6.42 x 2.36 x 3.01 in |
Size | 163 x 60 x 76.5 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 - 160A-420A, @1200VDC, L/R 10ms, 100KA - 160A-420A, @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 | 129 W |
Package Dimensions (L x W x H) | 6.42 in x 2.36 in x 3.01 in |
Package Dimensions (L x W x H) | 163 mm x 60 mm x 76.5 mm |
Package Weight (Imperial) | 2.535 lb |
Package Weight (Metric) | 1.150 kg |
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Frequently Asked Questions
What is the speed/characteristic of the Protistor size 72 fuse?
The speed/characteristic of the Protistor size 72 fuse is aR.
What is the product size designation for this fuse?
The product size designation for this fuse is 72.
What is the rated breaking capacity for this fuse?
The rated breaking capacity for this fuse is 100 kA.
What is the maximum DC voltage rating for this fuse?
The maximum DC voltage rating for this fuse is 1200 VDC.
What is the ampere range for Protistor size 72 aR fuses?
The ampere range for these fuses is from 160 A to 420 A.
What is the weight of the Protistor size 72 aR fuse?
The weight of the Protistor size 72 aR fuse is 1.15 kg.
What is the power dissipation for a 400A fuse at rated current?
The power dissipation for a 400A fuse at rated current is 129 W.
What is the maximum total I²t for a 400A fuse at 1000V with L/R=15ms?
The maximum total I²t for a 400A fuse at 1000V with L/R=15ms is 182 kA²s.
What standards does this fuse comply with?
This fuse complies with IEC 60269-1 and IEC 60269-4, and is a DC UL recognized component.
What are the applications for these semiconductor protection fuses?
Applications include protection of inverters, motor drives, UPS systems, railway circuits, and ESS battery racks.
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.