Mersen HP10J300 - Photovoltaic fuse gPV 1000VDC UL 300A With Blade For Clip or Bolted
Mersen

HP10J300

Alternate Item Number: HP10J300

UPC: 782001447977


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Overview

Mersen HP10J300 photovoltaic fuse is engineered for 1000VDC systems, rated at 300A with clip or bolted connections. Designed for DC Recombiner Boxes, it withstands continuous temperature and current cycling for extended system longevity. The fuse offers a low minimum breaking capacity of 1.35 times its rated current, enabling safe interruption under typical low fault currents common in PV arrays. Ideal for both off-grid and grid-tied systems, it protects against ground faults and line faults. Compatible with Mersen’s HelioProtection® line, the HP10J300 ensures reliable DC protection in high-voltage photovoltaic installations. UL-listed for safety and durability, this fuse is a critical component for maintaining system integrity in renewable energy applications. The HP10J300 features a blade for secure connection within clips or bolted mounting arrangements. This design facilitates easy integration into existing or new photovoltaic system configurations. Its robust construction is specifically tailored to meet the demanding operational requirements of photovoltaic power generation, ensuring consistent performance and protection. The fuse's ability to handle temperature and current cycling is crucial for the reliability of solar power systems operating under varying environmental conditions. This makes the HP10J300 a dependable choice for safeguarding photovoltaic arrays.
  • 1000VDC voltage rating for high-voltage PV systems
  • 300A current rating with clip or bolted connection options
  • Low minimum breaking capacity of 1.35x rated current for safe fault interruption
  • Designed for continuous temperature and current cycling in DC Recombiner Boxes
  • UL-listed for compliance and system safety in photovoltaic applications

Specifications

AC Voltage Rating
600 V
Amperage Rating
300 A
Application
Re-combiner box (sub-combiner, array combiner, master combiner) applications Inverter DC input Battery charge controllers
Body Material
GMG
Brand Name
Mersen
Class
Photovoltaic
Connection
Blade
Connection Material
Silver-Plated Copper
DC Voltage Rating
1000 V
Fuse Class
Photovoltaic
Interrupt Rating
200 kA
Mounting
Clip or Bolted
Mounting
Bolted;Clip
Size
7.13 x 2.13 in
Size
181.102 x 54.102 mm
Special Features
UL Listed to standard 2579 – Photovoltaic Fuses Smallest available footprint in the industry Enlarged mounting holes Low fault current interrupting capability Durable construction for enhanced system longevity Temperature cycle withstand capability Guaranteed operation at temperature extremes Blown fuse indicator options available (EI option) 200A to 400A available in NH3 mounting
Standard
UL listed to UL listed to Standard 248 File E333668 (70A to 600A) File E2137 (70A to 400A) CSA Component Certified C22.2 (70A to 400A)
Sub Brand
Helio Protection
Type
Photovoltaic Fuses UL
Type
Photovoltaic Fuses
Voltage Rating
1000 VDC
Package Dimensions (L x W x H)
7.13 in x 2.13 in x 2.13 in
Package Dimensions (L x W x H)
181.102 mm x 54.102 mm x 54.102 mm
Package Weight (Imperial)
1.750 lb
Package Weight (Metric)
0.794 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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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

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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.