Mersen T223002 DIN NH Standard fuse-link aM Size NH1 690VAC 250A live tags Striker Body width 44.60 mm
Alternate Item Number: NH1AM69V250P-2
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Overview
- Rated 690VAC, 250A for motor circuit protection (aM characteristic)
- Striker mechanism for visual indication of fuse operation
- Live tags for safe handling and installation
- Ceramic body with silver-plated copper contacts
- Body width: 44.60 mm (DIN NH size 1)
- Rated breaking capacity: 80 kA
Specifications
AC Voltage Rating | 690 V |
Amperage Rating | 250 A |
Application | aM: Partial purpose, motor circuit protection |
Body Material | Ceramic |
Brand Name | Mersen |
Connection | Plain Blades |
Connection Material | Silver-Plated Copper |
Connection Type | Blade contacts |
Current Rating | 250 A |
Interrupt Rating | 80 kA |
Mounting | Clip |
Mounting Type | Plug-in |
Series | NH Standard |
Size | 5.31 x 1.76 x 2.52 in |
Size | 135 x 44.6 x 64 mm |
Size | NH1 |
Special Features | Dimensions according to DIN 43 620 Parts 1 to 4 Lead free contact blades 0 cadmium |
Standard | VDE 0636 Part 201 IEC 60269-1 and -2 |
Type | IEC NH Fuse-Links |
Type Of Indicators | Striker |
Voltage Rating | 690 VAC |
Package Dimensions (L x W x H) | 5.31 in x 1.76 in x 2.52 in |
Package Dimensions (L x W x H) | 135 mm x 44.6 mm x 64 mm |
Package Weight (Imperial) | 0.845 lb |
Package Weight (Metric) | 0.383 kg |

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What is the voltage and current range for these NH fuse-links?
These NH fuse-links operate in a voltage range of 500 to 690 VAC and have a current range from 32 A to 1250 A.
What is the application for aM type NH fuse-links?
The aM type NH fuse-links are designed for partial purpose, motor circuit protection.
What are the available sizes for these NH fuse-links?
These NH fuse-links are available in sizes 0, 1, 2, 3, and 4, all equipped with a striker.
What standards do these NH fuse-links comply with?
The NH fuse-links comply with VDE 0636 Part 201 and IEC 60269-1 and -2 standards.
What materials are used for the contact blades and body?
The contact blades are lead-free, and the body material is ceramic. Contact materials include copper and silver-plated copper.
What is the rated breaking capacity for most NH fuse-links?
The rated breaking capacity for most NH fuse-links is 80 kA AC, with some reaching up to 120 kA AC.
How can I identify if a fuse-link has operated?
The striker is visible after the fuse link has operated, indicating it has blown.
What is the maximum rated current for Size 4 fuse-links at 690V?
For Size 4 fuse-links at 690V, the maximum rated current is 1000 A.
What is the power dissipation for a Size 0, 32A fuse-link?
The power dissipation for a Size 0, 32A fuse-link (catalog number NH0AM69V32P-2) at its rated current is 2.4 W.
What is the maximum rated current for Size 1 fuse-links at 500V?
The maximum rated current for Size 1 fuse-links at 500V is 315 A.
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.






