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Mersen Y330025 - Square Body High-Speed Fuse Protistor® Size NH 000 aR 690VAC IEC 125A Visual Indicator DIN 80 Blades

Mersen Y330025 Square Body High-Speed Fuse Protistor® Size NH 000 aR 690VAC IEC 125A Visual Indicator…

Alternate Item Number: DN000UB69V125V


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Specification Sheet

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Overview

The Mersen Y330025 is a Size 000 NH fuse-link designed for high-speed semiconductor protection in demanding industrial and power electronics applications. This fuse operates at a rated voltage of 690VAC (IEC) and has a rated current of 125A, making it suitable for medium-voltage AC systems. Its characteristic is aR (ultra-rapid), providing fast-acting protection against overcurrents to safeguard sensitive electronic components such as semiconductors, thyristors, and diodes from damage due to short circuits or overloads. The fuse features DIN 80 blades for secure mounting in compatible fuse holders and distribution panels, ensuring stable electrical contact. It includes a visual indicator for quick status monitoring, allowing operators to easily verify whether the fuse is intact or has operated. Constructed with a durable ceramic body, the Y330025 offers high mechanical strength and thermal stability, while its copper, silver-plated contact materials ensure reliable conductivity and low contact resistance over time. The interrupting rating (I.R. AC IEC) is 80 kA, meaning it can safely interrupt fault currents up to 80,000 amperes, providing robust protection in high-fault-level systems. At rated current, the power dissipation is 20.8W, which should be considered for thermal management in the application design. The unit weighs 0.2 kg, making it lightweight yet robust for installation in various industrial environments. This Mersen Protistor fuse is specifically engineered for applications requiring precise and rapid protection of sensitive electronic components in AC power systems up to 690V, including motor drives, power converters, and renewable energy systems. Its combination of high-speed response, high interrupting capacity, and reliable construction makes it a dependable choice for protecting critical power electronics. SKU: Y330025.
  • Mersen Protistor® Size 000 NH fuse-link
  • Rated Current: 125A
  • Rated Voltage: 690VAC (IEC)
  • Characteristic: aR (ultra-rapid)
  • DIN 80 blades and visual indicator

Specifications

AC Voltage Rating
690 V
Amperage Rating
125 A
Application
Protection of inverters, motor drives, UPS systems and similar 690V or less equipments.
Brand Name
Mersen
Case
Ceramic
Connection
DIN Type Blades
Mounting
Bolted
Size
3.94 x 0.79 x 1.52 in
Size
100 x 20 x 38.5 mm
Special Features
aR Class according to IEC 60269-4 and VDE 636-23 Very low I²t for improved semiconductor protection Ultra fast acting Superior cycling capability
Standard
IEC 60269-4 Compliance UL/CSA Recognized Component AC: UL Guide No. E76491
Sub Brand
Protistor®
Type
Square Body High-Speed Fuse-Links AC Protection
Type of Indicators
Visual Indicator
Voltage Rating
690 V
Wattage
26 W
Package Dimensions (L x W x H)
3.94 in x 0.79 in x 1.52 in
Package Dimensions (L x W x H)
100 mm x 20 mm x 38.5 mm
Package Weight (Imperial)
0.276 lb
Package Weight (Metric)
0.125 kg
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Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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.

LCC5

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.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

Frequently Asked Questions

What is the voltage range for Protistor ® size 000/00 aR fuses?

The Protistor ® size 000/00 aR fuses are rated for 500 to 690 VAC according to IEC standards and 700 VAC according to UL standards.

What type of protection do these fuses offer?

These fuses are designed for semiconductor protection, offering ultra-fast acting protection for diodes, thyristors, and IGBT devices.

What are the applications for these Protistor ® fuses?

They are suitable for protecting inverters, motor drives, UPS systems, and other equipment operating at 690V or less.

What standards do these fuses comply with?

The fuses comply with IEC 60269-4 and are UL/CSA Recognized Components.

What is the interrupting rating for these fuses?

The interrupting rating for these fuses is 120 kA at 500 VAC and 200 kA at 690 VAC according to IEC standards.

Can these fuses be equipped with an indicator?

Yes, each fuse-link can be equipped with a low voltage trip-indicator that can operate a field-mountable microswitch.

What is the ampere range for these fuses?

The ampere range for these Protistor ® fuses is from 16 A to 400 A.

What are the sizes available for these fuses?

These fuses are available in size 000 and 00 according to the relevant standards.

What is the purpose of the solidified sand in the fuse assembly?

The solidified sand helps control arcing characteristics, leading to a lower I²t and a high interrupting rating level.

Are the contact surfaces of the fuse silver plated?

Yes, all contact surfaces are silver plated, and all hardware is non-magnetic.

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.