Mersen K227870 - The NH system is classified among plug-in fuse systems and is composed of: • fuse-base (possibly including terminal covers and phase barriers) • fuse-link with blade contact • fuse-link replacement device (LV HRC fuse puller) Since the design of this system cannot guarantee non-interchangeability of rated current it must be handled by a qualified professional. Type aM NH fuse-links are partial-range breaking capacity fuse-links, used to protect motor circuits as they are strongly current-limiting and have low power losses. They interrupt currents from 6.3 times In up to their maximum breaking capacity and are therefore suited for short-circuit protection only. They must be associated with other switchgear for protection against overloads. These fuse-links can have a rated current equal to the motor's nominal current. 690 Volts 6 Amps aM NH0 series.
Mersen

K227870

Alternate Item Number: 8430399024875


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Overview

The Mersen K227870 aM NH0 Series 6A 690V NH fuse-link is a partial-range breaking capacity fuse designed for motor circuit protection in industrial applications. Part of the NH plug-in fuse system, this fuse-link provides reliable short-circuit protection with strong current-limiting capabilities and minimal power losses. Rated for 690V AC, it interrupts fault currents from 6.3 times the rated current (38A) up to its maximum breaking capacity, making it ideal for protecting motor circuits against short circuits. The aM classification indicates suitability for motor circuits, while the NH0 size ensures compatibility with standard NH fuse bases and systems. Key specifications include a rated current of 6A, rated voltage of 690V AC, and a breaking capacity of 80kA. The fuse-link features double indicator/live gripping-lugs for safe handling and is designed for use with NH fuse bases such as BB00TS or similar. With a power dissipation of 1.6W at rated current, it minimizes energy losses in the system. The compact size 000 design allows for easy integration into existing NH fuse systems, including those with DIN rail mounting options. This fuse-link is engineered for precision and durability in industrial environments, where reliable short-circuit protection is critical for motor circuits. It must be used in conjunction with other switchgear for overload protection, as it is designed for short-circuit protection only. The Mersen K227870 is manufactured in the US and distributed by Gross Automation, ensuring quality and availability for industrial applications.
  • Partial-range breaking capacity fuse for motor circuit protection
  • Rated 6A at 690V AC with 80kA breaking capacity
  • Strong current-limiting capabilities with minimal power loss (1.6W at In)
  • Compatible with NH0 size fuse bases and DIN rail mounting systems
  • Double indicator/live gripping-lugs for safe handling and installation

Specifications

Amperage Rating
6 A
Application
aM: Partial purpose, motor circuit protection
Brand Name
Ferraz Shawmut
Connection
Blade
Connection Type
Blade Contact
Current Rating
6 A
Interrupt Rating
80 kA
Mounting
Clip
Series
aM NH0
Special Features
Dimensions according to DIN 43 620 parts 1 to 4 Non-isolated gripping lugs Double indicator Lead free contact blades 0% cadmium
Standard
DIN 57636 Part 201 VDE 0636 Part 201 IEC 60269-1 and -2
Type
IEC NH Fuse-Links
Voltage Rating
690 VAC
Package Dimensions (L x W x H)
4.92 IN x 1.89 IN x 1.18 IN
Package Dimensions (L x W x H)
12.4968 cm x 4.8006 cm x 2.9972 cm
Package Weight (Imperial)
0.580 L
Package Weight (Metric)
0.263 kg
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

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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.