Mersen P1048675 - Photovoltaic fuse gPV 1250VDC IEC 1250VDC UL Size 3L 250A With DIN Type Blades For Direct Mount
Mersen

P1048675

Alternate Item Number: HP12NH3LGPV250B

Contact for Pricing

Overview

Protect your photovoltaic systems with the Mersen HP12NH gPV fuse (SKU: P1048675). Engineered specifically for PV applications, this fuse link offers robust protection for cables in PV string groups against short circuits originating from a panel. It is designed for main fuse category applications and features a Size 3L form factor with DIN type blades for direct mounting. This Mersen HelioProtection® fuse complies with both IEC 60269-6 and UL 2579 PV standards, ensuring reliable performance and safety. With a voltage rating of 1250 VDC and a current rating of 250 A, it is suitable for demanding solar installations. The direct mount capability simplifies installation, and the DIN type blades provide secure connections. The HP12NH series is recognized for its global acceptance and is available in various configurations to meet specific system requirements. Its durable construction enhances system longevity, and it offers efficient operation with low power losses. Applications include combiner boxes, inverter DC inputs, and battery charge controllers. Trust Mersen for dependable photovoltaic protection.
  • Mersen HP12NH gPV fuse for photovoltaic system protection
  • 1250 VDC voltage rating and 250 A current rating
  • Size 3L with DIN Type Blades for direct mounting
  • Complies with IEC 60269-6 and UL 2579 PV standards
  • Designed for main fuse category and cable protection in PV strings

Specifications

Amperage Rating
250 A
Application
All photovoltaic applications Inverter DC input protection Re-combiner applications (sub combiner, array combiner, master combiner)
Brand Name
Mersen
Connection
DIN Type Blades
Connection Material
Silver-Plated Copper
DC Voltage Rating
1250 V
Mounting
Direct Mount
Size
8.07 x 2.76 x 3.03 in
Size
205 x 70 x 77 mm
Special Features
Global acceptance Low fault current interrupting capability Temperature cycle withstand capability Durable construction for enhanced system longevity High efficiency with low power losses Available in 3 versions: plain blade, direct mounted, direct mounted with striker
Standard
IEC 60269-6 UL 2579 RoHS compliance
Sub Brand
HelioProtection®
Type
Photovoltaic Fuses
Package Dimensions (L x W x H)
8.07 in x 2.76 in x 3.03 in
Package Dimensions (L x W x H)
205 mm x 70 mm x 77 mm
Package Weight (Imperial)
3.660 lb
Package Weight (Metric)
1.660 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.

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.
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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.