H4 P2KV Solar Connector | Amphe-PV 2000V DC

The H4 P2KV Solar Connector from Amphenol Industrial Operations is engineered for next-generation utility-scale and commercial photovoltaic systems requiring certified 2000V DC performance, increased current capacity, and dependable outdoor reliability. Designed for 6 AWG (16 mm²) photovoltaic cable, the Amphe-PV H4 P2KV supports longer PV strings, reduced electrical losses, and lower balance-of-system complexity while maintaining compatibility with designated connectors in the Amphenol H4 family.

As solar projects move beyond conventional 1500V architectures, engineers need connectors specifically designed to manage higher operating voltages without compromising electrical efficiency, environmental sealing, or installation consistency. The H4 P2KV Solar Connector provides a certified high-voltage connection platform with low contact resistance, durable materials, dedicated installation tooling, and field-installable or preassembled options for demanding solar energy systems.

Table of Contents

• Overview
• At a Glance
• Key Features & Benefits
• Typical Applications
• Technical Details
• Installation Considerations
• Resources & Support
• Frequently Asked Questions

H4 P2KV Solar Connector Overview

The H4 P2KV Solar Connector is a high-voltage photovoltaic cable connector developed for modern solar power architectures. It is designed for 2000V DC systems using 6 AWG photovoltaic cable, making it particularly relevant for utility-scale solar installations where higher string voltage and increased power density can improve overall system economics.

Moving from 1500V to 2000V DC system architecture can allow project designers to increase the number of modules connected in a string. Depending on the complete system design, this may reduce the amount of cabling, combiner equipment, and other electrical balance-of-system components required throughout the installation.

The connector combines 2000V DC capability with 6 AWG conductor support, low electrical resistance, environmental protection, and a secure snap-locking interface. These characteristics help engineers, EPCs, installers, and asset owners address the electrical and mechanical demands associated with larger and more powerful photovoltaic systems.

At a Glance

• Rated for 2000V DC photovoltaic applications
• Supports 6 AWG (16 mm²) photovoltaic cable
• Rated current of 65A under ETL and 70A under TÜV at 85°C
• Typical contact resistance of 0.25 mΩ or less
• Compatible with designated connectors in the Amphenol H4 family
• IP65 and IP68 protection when properly mated
• IP2X touch protection when unmated
• Available in field-installable and preassembled configurations
• UV-resistant, UL94-V0 thermoplastic housing
• RoHS and REACH compliant

Key Features & Benefits

2000V DC Capability for Higher-Voltage Solar Systems

The H4 P2KV Solar Connector supports emerging 2000V DC photovoltaic architectures. Higher-voltage strings can help system designers transmit more power while reducing current for a given power level, potentially lowering resistive losses and reducing the quantity of balance-of-system components required by the installation.

6 AWG Conductor Support

Support for 6 AWG (16 mm²) photovoltaic cable gives designers a larger conductor option for high-current DC pathways. The connector accommodates cable outside diameters from 8.38 mm to 11.0 mm and conductor constructions ranging from 7 to 128 strands, subject to approved cable and assembly requirements.

Low-Resistance Electrical Interface

A typical contact resistance of 0.25 mΩ or less helps reduce electrical losses and heat generation across the connection. Maintaining a stable, low-resistance interface is particularly important in utility-scale photovoltaic systems, where small losses across a large number of connectors can affect overall energy production.

H4 Family Integration

The connector is designed for mating compatibility with designated products in the Amphenol H4 connector family. This allows customers to build on an established Amphenol solar connector platform while transitioning to higher-voltage and higher-current system requirements. Compatibility should always be confirmed against current Amphenol documentation and approved connector combinations.

Environmental Protection for Outdoor PV Systems

When correctly assembled and fully mated, the connector provides IP65 and IP68 ingress protection. UV-resistant thermoplastic insulation, a UL94-V0 flame classification, and an ambient temperature range of -40°C to +85°C support installation in demanding outdoor photovoltaic environments.

Field and Preassembled Options

Field-installable and preassembled configurations provide flexibility for module manufacturers, harness suppliers, EPCs, and installation teams. Dedicated stripping, crimping, torque, inspection, and unlocking tools help installers achieve repeatable assembly quality and protect the electrical and environmental performance of the connection.

Typical Applications

The H4 P2KV Solar Connector is designed for high-voltage and high-current DC connections throughout modern photovoltaic power systems. Typical applications include:

• Utility-scale photovoltaic installations
• Commercial and industrial solar systems
• Ground-mounted solar farms
• Solar module string interconnections
• String-level DC power connections
• Combiner and junction box interfaces
• High-voltage DC pathways to compatible inverters
• Solar-plus-storage infrastructure
• Large-scale renewable energy projects

Explore additional Amphenol solar connector and junction box solutions for photovoltaic modules, string connections, panel interfaces, and other electrical balance-of-system requirements.

H4 P2KV Solar Connector Technical Details

The Amphe-PV H4 P2KV is rated to 2000V DC under UL 6703 requirements and has a rated impulse voltage of 16 kV under applicable IEC criteria. The connector carries up to 65A under ETL certification and up to 70A under TÜV certification at 85°C. Actual current capability must be evaluated using the approved cable, ambient temperature, installation conditions, and applicable derating information.

The current rating of any photovoltaic connector depends on the approved cable, conductor construction, ambient temperature, installation method, and application-specific derating requirements. Engineers should review the latest product documentation when validating the connector for a specific project.

Installation Considerations

Long-term connector performance depends on correct cable selection, preparation, crimping, inspection, tightening, and mating. Installers should follow the current Amphenol assembly instructions and use the specified tools for the exact connector and cable configuration.

• Use approved 6 AWG / 16 mm² copper photovoltaic cable.
• Confirm that the cable outside diameter is between 8.38 mm and 11.0 mm.
• Strip the conductor to 7.0 ±0.5 mm without cutting or damaging strands.
• Use the specified H4TTD0002 crimp die and approved crimping equipment.
• Verify that all conductor strands are captured within the terminal barrel.
• Confirm a pull-force target greater than 445 N where required by the assembly specification.
• Tighten the back cap to the specified torque range of 2.6 to 4.0 N·m.
• Verify contact seating, latch engagement, seal position, and interface gap before energizing the system.
• Maintain a minimum of 30 mm of straight cable immediately adjacent to the connector before the first bend. Do not secure the cable with zip ties, clamps, cable management clips, or other restraints within this section, as doing so may introduce mechanical stress that can affect connector performance and sealing.
• Never mate or disconnect the connector while it is carrying electrical load.

Correct assembly tooling is essential because an improperly stripped conductor, incomplete crimp, insufficient torque, damaged seal, or partially engaged latch can increase electrical resistance or compromise environmental protection. Use protective caps when connectors will remain unmated during transportation, storage, or installation.

Photovoltaic connectors should only be mated with approved connectors from the same manufacturer. Cross-mating between different manufacturers is generally not recognized under UL and IEC certification requirements unless the specific combination has been tested and certified. Always verify compatibility using the manufacturer’s documentation and applicable project requirements.

Frequently Asked Questions

What is the H4 P2KV Solar Connector?

The H4 P2KV Solar Connector is a high-voltage photovoltaic cable connector designed for 2000V DC solar systems using 6 AWG or 16 mm² cable. It provides a low-resistance crimp connection, environmental sealing, touch protection, and compatibility with designated connectors in the Amphenol H4 family.

What voltage is the H4 P2KV Solar Connector rated for?

The connector is rated for 2000V DC photovoltaic applications under UL 6703. It also has a rated impulse voltage of 16 kV under applicable IEC criteria.

What is the current rating of the H4 P2KV connector?

The documented current ratings at 85°C are 65A under ETL and 70A under TÜV. Final current capability depends on the approved cable, ambient temperature, installation conditions, and applicable derating requirements.

What cable size does the H4 P2KV Solar Connector support?

The connector is designed for 6 AWG or 16 mm² photovoltaic copper cable. The documented cable outside-diameter range is 8.38 mm to 11.0 mm, with conductor constructions ranging from 7 to 128 strands.

Is the H4 P2KV Solar Connector waterproof?

The connector provides IP65 and IP68 ingress protection when it is correctly assembled and fully mated. Proper assembly, cable selection, torque control, inspection, and appropriate installation conditions remain necessary.

Is the H4 P2KV connector touch-safe when unmated?

Yes. The connector is rated IP2X in the unmated condition. The circuit must still be isolated and de-energized before assembly, mating, unmating, or service.

Is the H4 P2KV compatible with other H4 connectors?

It is designed for mating compatibility with designated products in the Amphenol H4 connector family. Engineers should verify the exact approved combination using current Amphenol documentation. Compatibility with connectors from other manufacturers should not be assumed.

Can the H4 P2KV connector be installed in the field?

Yes. Field-installable and preassembled versions are available. Field installation requires the specified stripping, crimping, torque, inspection, and unlocking tools, along with adherence to the current Amphenol assembly instructions.

Why use a 2000V solar connector instead of a 1500V connector?

A 2000V connector supports higher-voltage photovoltaic architectures. Depending on the system design, higher string voltage can allow longer strings and may reduce cabling, combiner equipment, electrical losses, and other balance-of-system requirements. The complete system must be designed and approved for 2000V operation.

Important Compatibility Note: The H4 P2KV is currently Amphenol’s only H4 connector qualified for 2000V DC operation and is designed specifically for 6 AWG (16 mm²) photovoltaic cable. All other standard H4 Plus connectors are rated for 1500V DC. If an H4 P2KV connector is mated with a standard 1500V H4 Plus connector, the connection is limited to the lower-rated component and must be considered a 1500V connection, not a 2000V connection. Always use approved H4 P2KV connector pairs when designing or installing 2000V photovoltaic systems.

Where is the H4 P2KV Solar Connector typically used?

Typical applications include utility-scale solar farms, commercial photovoltaic systems, module strings, string-level interconnections, combiner boxes, compatible inverter DC inputs, and solar-plus-storage infrastructure.