Table of Contents
Introduction to NSPV's Insulation Piercing Connector (Solar DC IPC)
2026-09-05
An Insulation Piercing Connector (IPC) is a specialized electrical connector designed to create a reliable branch connection to an insulated conductor without removing the cable insulation.
For modern photovoltaic systems, an IPC can simplify field wiring where a branch connection is required while maintaining the insulation and sealing of the main conductor.
The NSPV IPC4116120 is designed for 1500V DC solar PV applications, supporting copper and aluminum conductors across a wide range of cable sizes. It combines insulation piercing technology, torque‑controlled installation and an outdoor‑rated sealing structure to provide a compact solution for solar PV and electrical distribution applications.
Table of Contents
- What Is an Insulation Piercing Connector?
- Why Use an IPC in 1500V DC Solar PV Systems?
- How Does an Insulation Piercing Connector Work?
- NSPV IPC4116120
- IPC4116120 Technical Specifications
- IPC Cable Compatibility & Selection Guide
- 1500V DC Solar PV Application
- Outdoor Protection – IP65
- Electrical & Mechanical Performance
- Standards & Design Reference
- Why Choose NSPV IPC?
- Frequently Asked Questions
- Technical Datasheet
- Request an IPC Recommendation
What Is an Insulation Piercing Connector?
An Insulation Piercing Connector (IPC) is designed to establish an electrical connection through the insulation of an insulated conductor without requiring the insulation to be stripped first.
During installation, the connector's conductive piercing elements penetrate the cable insulation and establish electrical contact with the conductor. A torque‑controlled shear‑head bolt helps achieve the specified clamping force while the sealing structure protects the connection from outdoor environmental exposure.
Unlike conventional cable branching methods that may require insulation stripping, cutting or additional connection components, an IPC provides a compact method for creating an insulated branch connection.
For solar applications, this makes an IPC particularly useful where simplified field installation, compact wiring and outdoor protection are important.
Why Use an Insulation Piercing Connector in 1500V DC Solar PV Systems?
Modern solar PV systems increasingly use high‑voltage DC architectures to reduce system losses and improve overall power transmission efficiency.
At the same time, field installation may require additional branch connections between insulated conductors.
An insulation piercing connector for solar PV can simplify this process by eliminating the need for conventional insulation stripping during installation.
Key advantages include:
- No insulation stripping required
- Simplified field installation
- Torque‑controlled connection
- Compact branch connection
- Copper and aluminum conductor compatibility
- IP65 outdoor protection
- Designed for 1500V DC solar PV applications
The result is a practical solar IPC connector for applications where insulated conductors need to be branched without unnecessarily exposing the conductor.
How Does an Insulation Piercing Connector Work?
The operating principle of an IPC is straightforward:
- The insulated main conductor is positioned inside the main cable section.
- The insulated branch conductor is inserted into the corresponding tap section.
- The torque‑control bolt is tightened using the specified installation method.
- The internal piercing elements penetrate the insulation and establish electrical contact.
- The shear‑head bolt indicates that the specified tightening torque has been reached.
- The sealing structure remains around the cable connection to provide outdoor protection.
For detailed product construction, dimensions and installation procedures, please refer to the NSPV IPC4116120 Technical Datasheet available for download below.
NSPV IPC4116120 – 1500V DC Solar IPC Connector
The NSPV IPC4116120 Insulation Piercing Connector is designed for branching insulated conductors in solar PV and electrical distribution applications.
The connector combines a reinforced housing, conductive piercing elements, sealing components and a torque‑controlled shear‑head bolt into a compact connection solution.
The IPC4116120 supports a wide range of insulated copper and aluminum conductors and is designed for applications where reliable electrical contact, simplified installation and outdoor protection are required.
Designed for Solar PV Applications
The IPC4116120 is positioned specifically as a 1500V insulation piercing connector for solar PV applications, rather than as a general‑purpose low‑voltage tap connector. It is intended for applications where insulated DC conductors require a branch connection while maintaining the overall insulation and environmental protection of the cable system.
IPC4116120 Technical Specifications
| Item | Specification |
| Model | IPC4116120 |
| Brand | NSPV |
| Product Type | Insulation Piercing Connector |
| Application | Solar PV / DC Electrical Distribution |
| Rated Voltage | Up to 1500V DC |
| Main Cable Range | 16–120 mm² |
| Tap Cable Range | 4–16 mm² |
| Conductor Material | Copper / Aluminum |
| Bolt Type | Torque‑control shear‑head bolt |
| Piercing Element | Tinned conductive alloy |
| Housing Material | UV‑resistant glass‑fiber reinforced thermoplastic |
| Protection Rating | IP65 |
| Operating Temperature | ‑40°C to +90°C |
| Installation Method | Torque‑controlled installation |
| Cable Preparation | No insulation stripping required |
| Application | Solar PV, outdoor electrical distribution and related applications |
Note: Product specifications should always be checked against the latest NSPV technical datasheet for the applicable cable configuration and project requirements.
IPC Cable Compatibility & Selection Guide
Selecting the correct IPC connector for solar cable depends primarily on the main conductor size, branch conductor size, conductor material and system application.
The IPC4116120 supports different combinations of main and tap conductors within its specified cable ranges.
IPC4116120 Cable Selection
| Main Cable | Tap Cable | Typical Application |
| 16–35 mm² | 4–10 mm² | Smaller branch connections / distributed PV wiring |
| 35–70 mm² | 6–16 mm² | Commercial and industrial PV applications |
| 70–120 mm² | 10–16 mm² | Higher‑current PV distribution applications |
| Copper | Copper | Copper conductor systems |
| Aluminum | Aluminum | Aluminum conductor systems |
| Copper | Aluminum | Mixed‑conductor applications where technically applicable |
| Aluminum | Copper | Mixed‑conductor applications where technically applicable |
Important: Cable compatibility must be confirmed according to the actual conductor construction, cross‑sectional area and applicable installation conditions. For mixed copper/aluminum applications, the appropriate configuration should be confirmed with NSPV before ordering.
Need help selecting the correct IPC?
Send NSPV: Main cable size, Branch cable size, Copper or aluminum conductor, System voltage, Estimated quantity, Application
NSPV can then recommend the appropriate IPC configuration for your project.
1500V DC Solar PV Applications
The NSPV IPC4116120 is designed for applications where an insulated conductor requires a compact branch connection in a solar PV electrical system.
Typical applications may include:
- Commercial and industrial solar PV systems
- Utility‑related PV electrical distribution
- PV DC cable branching
- Outdoor DC distribution
- Solar cable tapping applications
- Electrical distribution systems using insulated conductors
The IPC provides a practical connection method where cable insulation stripping and additional exposed‑conductor preparation are undesirable.
Outdoor Protection – IP65
The IPC4116120 uses a sealed housing and sealing structure designed for outdoor electrical applications.
IP65 Protection
The NSPV IPC4116120 is specified as IP65 when installed and sealed according to the applicable installation requirements.
IP65 protection helps protect the connection against:
- Dust ingress
- Water jets
- Outdoor environmental exposure
The connector housing is also designed with UV‑resistant materials for outdoor applications.
| Environmental Requirement | IPC4116120 |
| Outdoor Application | ✓ |
| IP Protection | IP65 |
| UV‑Resistant Housing | ✓ |
| Operating Temperature | ‑40°C to +90°C |
| Sealed Connection Structure | ✓ |
For installation conditions outside the specified operating range, the application should be evaluated according to the actual project environment.
Electrical & Mechanical Performance
For professional solar and electrical applications, connector reliability depends on more than rated voltage and current.
The relevant engineering parameters for IPC selection may include:
Electrical Performance
- Rated DC voltage
- Applicable current according to conductor configuration
- Conductor cross‑section
- Contact resistance
- Insulation performance
- Temperature rise
Mechanical Performance
- Torque‑controlled tightening
- Shear‑head performance
- Cable clamping
- Mechanical stability
- Conductor retention
Environmental Performance
- IP65 protection
- UV resistance
- Operating temperature
- Outdoor sealing performance
- Corrosion resistance of applicable components
Detailed engineering values, dimensions, construction information and applicable test data are provided in the NSPV IPC4116120 Technical Datasheet.
Standards & Design Reference for 1500V DC Solar PV Applications
The design of a high‑voltage solar connection component must consider the electrical and environmental requirements of photovoltaic systems.
For PV DC connector applications, IEC 62852 is the key international reference standard for connectors used in DC circuits of photovoltaic systems. The standard covers PV connectors rated up to 1500V DC and up to 125A per contact within its scope.
The European EN 62852 is the European adoption of IEC 62852 and superseded the earlier EN 50521 framework.
NSPV PV Connection Design Reference
| Reference / Requirement | Purpose |
| 1500V DC PV application requirements | High‑voltage solar PV application |
| IEC 62852 / EN 62852 | PV DC connector safety and testing reference |
| EN 50483‑4 | Relevant reference for insulation piercing connector applications |
| IEC 61140 | Basic protection against electric shock principles |
| Applicable insulation / clearance requirements | High‑voltage DC insulation design |
| IP65 | Outdoor enclosure protection |
Important Certification Statement
The NSPV IPC4116120 is not currently presented as a third‑party certified MC4 connector or as an IEC 62852‑certified plug‑and‑socket connector.
Instead, IEC 62852 and other applicable PV electrical requirements are used as relevant technical references where applicable to the product design and application.
For projects requiring specific third‑party certification, customers should confirm the required certification and testing documentation with NSPV before procurement.
This distinction is important because an insulation piercing connector is structurally different from a conventional plug‑and‑socket PV connector such as MC4. Therefore, standards should be applied according to the actual product construction and intended application rather than simply claiming equivalence.
Why Choose NSPV for Solar IPC Applications?
The performance of an insulation piercing connector for solar PV depends on the complete connection system—not simply the connector housing.
NSPV focuses on practical requirements for solar electrical connections, including:
- Solar‑Focused Product Development
The IPC platform is developed specifically with solar PV and outdoor electrical applications in mind. - Wide Cable Compatibility
The IPC4116120 supports multiple conductor sizes and copper/aluminum configurations within its specified operating range. - Simplified Field Installation
The insulation piercing structure eliminates the need for conventional insulation stripping during the connection process. - Outdoor Protection
The sealed structure and IP65 protection support outdoor solar installation environments. - Technical Documentation
Detailed product specifications, dimensions, construction information and installation instructions are provided through the NSPV technical datasheet. - Project‑Based Support
For OEM, EPC, distributor and project procurement requirements, NSPV can evaluate cable specifications and application conditions to recommend a suitable IPC configuration.
Frequently Asked Questions About Solar Insulation Piercing Connectors
1. What is an insulation piercing connector?
An insulation piercing connector is an electrical connector that establishes contact with an insulated conductor by penetrating the insulation with conductive piercing elements, eliminating the need to strip the insulation before connection.
2. Can an IPC be used in solar PV systems?
Yes. The NSPV IPC4116120 is designed for 1500V DC solar PV applications within its specified electrical, mechanical and environmental conditions.
3. Is the IPC4116120 rated for 1500V DC?
The IPC4116120 is designed for applications up to 1500V DC, subject to the applicable cable configuration and installation requirements.
4. Does the cable insulation need to be stripped before installation?
- No insulation stripping is required for the main conductor.
The main cable can be directly inserted into the IPC and connected through the internal piercing contact structure. - For the branch conductor (tap cable), the insulation should be stripped approximately 5–7 mm before insertion according to the installation requirement, allowing the conductive element to achieve a reliable electrical connection.
- This installation method combines the advantages of insulation piercing technology with optimized electrical contact performance for the branch connection.
5. Can the IPC connect copper and aluminum cables?
The IPC4116120 supports copper and aluminum conductors within the specified cable range. Mixed copper/aluminum configurations should be confirmed according to the actual conductor construction and application requirements.
6. What cable sizes does the IPC4116120 support?
The specified range is: Main cable: 16–120 mm²; Tap cable: 4–16 mm². The correct configuration should be selected according to the actual conductor size and application.
7. Is the NSPV IPC4116120 waterproof?
The IPC4116120 is specified with IP65 protection when correctly installed and sealed according to the applicable installation requirements.
8. Can the IPC4116120 be used outdoors?
Yes. The IPC4116120 is designed for outdoor applications and incorporates UV‑resistant housing and an IP65 sealing structure.
9. What tool is required to install the IPC?
Installation uses a torque‑controlled shear‑head bolt and the specified installation method. Detailed installation instructions are provided in the NSPV technical datasheet.
10. Is there a dedicated international certification standard for insulation piercing connectors?
Currently, there is no dedicated international certification standard specifically developed only for photovoltaic insulation piercing connectors (IPC).
-
In the solar industry, IPC products are generally evaluated by referring to applicable photovoltaic electrical safety requirements and connector-related testing principles.
-
For example, IEC 62852 is widely recognized as a safety and testing reference for DC photovoltaic connectors up to 1500V DC. However, IEC 62852 was originally developed for PV DC connectors with plug-and-socket structures, rather than insulation piercing connectors.
-
Therefore, NSPV evaluates IPC products according to applicable electrical, mechanical and environmental performance requirements, including:
- DC voltage requirements
- Insulation performance
- Contact reliability
- Temperature rise performance
- Mechanical connection strength
- Outdoor protection requirements
-
Customers requiring specific project testing requirements are welcome to discuss their technical requirements with NSPV before procurement.
11. Can NSPV provide technical documentation?
Yes. The IPC4116120 technical datasheet provides detailed product information, including construction, dimensions, cable ranges and installation information.
12. How do I select the right IPC?
Please provide: Main cable size + tap cable size + conductor material + system voltage + application + estimated quantity. NSPV can help evaluate the appropriate IPC configuration.
13. Can I request samples?
Sample availability can be discussed with NSPV according to the required product configuration and project requirements.
14. Can NSPV support OEM or project‑specific requirements?
For distributor, EPC and project procurement requirements, contact NSPV with the technical requirements and expected quantity for evaluation.
Technical Datasheet
For detailed technical information, please refer to the NSPV IPC4116120 Technical Datasheet, including:
- Product construction
- Technical specifications
- Cable compatibility
- Dimensions
- Installation instructions
- Applicable product information
Related Resources
Why Do You Choose NSPV's Insulation Piercing Connector?
Learn how NSPV focuses on connection reliability, outdoor durability and installation efficiency compared with conventional IPC products.
Accelerating Solar Installations in Italy: How Insulation Piercing Connectors Cut Time and Costs
Explore how insulation piercing technology can simplify solar installation and electrical branching applications.
Technical Specifications
| Model | IPC4116120 |
| Rated Voltage | 1500V DC |
| Protection Class | IP65 |
| Cable Type | Copper / Aluminum PV cables |
| Application | Solar PV power system |
Contact Us for B2B Inquiry
For bulk quotation, technical support and datasheet download of NSPV IPC4116120 insulation piercing connector, please get in touch with our sales team.
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