Mersen HP15P40 - Mersen HP15P40 is a 1500VDC photovoltaic (PV) fuse designed for high-amperage PV circuits. Rated at 40A with a 20x65mm form factor, it handles harsh thermal and cyclical loads in off-grid or grid-tied PV systems. Features low minimum breaking capacity (1.35x rated current) for safe interruption under low fault conditions. Available with standard ferrule terminals or crimp cap terminals for in-line applications. Part of Mersen’s HelioProtection® line, ensuring reliable protection for PV string/array level and combiner box applications.
Mersen

HP15P40

Alternate Item Number: HP15P40

UPC: 782001505424


Documents & Media
Technical DrawingLine DrawingComputer-Aided (CAD) Model

Contact for Pricing

Minimum Qty: 25

Multiplier: 25

*Contact for lower quantities*

Overview

The Mersen HP15P40 is a specialized 1500VDC photovoltaic (PV) fuse engineered for robust protection in high-amperage PV systems. With a 40A current rating and a compact 20x65mm form factor, this fuse is part of Mersen’s HelioProtection® line, designed to safeguard PV string/array level applications and combiner boxes. It is specifically built to withstand harsh thermal and cyclical loads encountered in both off-grid and grid-tied PV installations. A key feature is its low minimum breaking capacity, rated at 1.35 times the nominal current, ensuring safe and reliable interruption of low fault conditions. The HP15P40 is available with standard ferrule terminals for traditional fuse holders or with crimp cap terminals for in-line PV module protection. This fuse is certified to UL Listed to Standard UL2579 and IEC 60269-6, with CSA Component Pending, demonstrating its global acceptance and adherence to stringent safety standards. Its durable construction enhances system longevity, and it is guaranteed to operate at temperature extremes. The HP15P series is designed for string protection, offering a Short-Circuit Current Rating (SCCR) of 50kA. The HP15P40 is suitable for applications including PV string/array level protection, combiner box applications, in-line PV module protection, inverters, and battery charge controllers. Manufacturer: Mersen. SKU: HP15P40. Country of Origin: US.
  • 1500VDC voltage rating for high-voltage PV systems
  • 40A current rating for high-amperage circuits
  • 20x65mm form factor for compact installations
  • Low minimum breaking capacity (1.35x rated current) for safe fault interruption
  • Available with ferrule or crimp cap terminals for versatile application

Specifications

Amperage Rating
40 A
Application
All photovoltaic applications PV string/array level protection Combiner box applications In-line PV module protection Inverters Battery charge controllers
Body Material
GMG
Brand Name
Mersen
Class
Photovoltaic
Connection
Ferrule
Connection Material
Tin-Plated Copper
Connection Type
Ferrule Terminal, Crimp Cap Terminal
DC Voltage Rating
1500 V
Fuse Class
Photovoltaic
Interrupt Rating
50 kA
Mounting
Clip
Series
HelioProtection
Size
2.56 x 0.82 in
Size
65.024 x 20.726 mm
Size
20x65 mm
Special Features
20A to 65A for higher amperage applications Low fault current interrupting capability Durable construction for enhanced system longevity Temperature and load cycling capability Certified to global standards Recommended fuse holders: HP15FHP80W, HP15FHP80B
Special Features
10A to 65A for higher amperage applications Low fault current interrupting capability Durable construction for enhanced system longevity Temperature and load cycling capability Certified to global standards Recommended fuse holders: HP15FHP80W, HP15FHP80B
Standard
UL Listed to Standard UL 248-19 CSA Component Certified C22.2 IEC 60269-6 UKCA
Sub Brand
HelioProtection®
Type
Photovoltaic Fuses UL
Type
Photovoltaic Fuses
Voltage Rating
1500 VDC
Package Dimensions (L x W x H)
2.56 in x 0.82 in x 0.82 in
Package Dimensions (L x W x H)
65.024 mm x 20.726 mm x 20.726 mm
Package Weight (Imperial)
0.110 lb
Package Weight (Metric)
0.050 kg
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
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 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.