3 phase distribution board technical guide | Laiwo Electric

Jul 22,2025

 

In the dynamic world of electrical distribution, reliability, safety, and performance are paramount. For B2B clients seeking robust solutions, our range of 3-Phase TP&N Metal Distribution Boards stands out. As a leading Electrical Panel Board Procurement partner and Power Distribution Box Wholesale supplier, we pride ourselves on the meticulous engineering and quality craftsmanship that goes into every unit, ensuring superior operation and longevity for your industrial and commercial applications.

 

Let's delve into the core aspects that define our commitment to excellence, making us a preferred choice for Electrical Distribution Panel Suppliers and Electrical Distribution Wholesale.

 


 

125A TP&N Metal Distribution Board

 

125A TP&N Metal Distribution Board-laiwo

 

Rated Voltage AC380V/415V  50/60Hz

 

Maximum loading current to 125A

 

Fitted with 4Pole 125A Main Switch

 

Section Neutral & Earth terminals fitted both sides

 

Fully enclosed 125A busbar system

 

Complete shrouding for main incomer and terminals

 

Removable gland plate at top & bottom

 

Surface Mounted

 

Certificated with CE/UKCA by BSEN61439-3

 

OEM/ODM Service

 

 

 

Part No Description W(mm) W1(mm) H(mm) H1(mm) D(mm)
TPN04-125 4 Ways with 4 Pole 125A Main Switch Incomer 465 321 506 409 105
TPN06-125 6 Ways with 4 Pole 125A Main Switch Incomer 465 321 560 463 105
TPN08-125 8 Ways with 4 Pole 125A Main Switch Incomer 465 321 614 517 105
TPN10-125 10 Ways with 4 Pole 125A Main Switch Incomer 465 321 668 571 105
TPN12-125 12 Ways with 4 Pole 125A Main Switch Incomer 465 321 722 625 105
TPN14-125 14 Ways with 4 Pole 125A Main Switch Incomer 465 321 776 679 105
TPN16-125 16 Ways with 4 Pole 125A Main Switch Incomer 465 321 830 733 105
TPN18-125 18 Ways with 4 Pole 125A Main Switch Incomer 465 321 884 787 105
TPN24-125 24 Ways with 4 Pole 125A Main Switch Incomer 465 321 1046 949 105

 


 

125A TP&N Surge Protection Distribution Board

 

125A TP&N Surge Protection Distribution Board-laiwo

 

Rated Voltage AC380V/415V  50/60Hz

 

Maximum loading current to 125A

 

Fitted with 4Pole 125A Main Switch

 

Fitted with 4Pole 20/40KA/T2 Surage Protective Device

 

Section Neutral & Earth terminals fitted both sides

 

Fully enclosed 125A busbar system

 

Complete shrouding for main incomer and terminals

 

Removable gland plate at top & bottom

 

Surface Mounted

 

Certificated with CE/UKCA by BSEN61439-3

 

OEM/ODM Service

 

125A TP&N Surge Protection Distribution Board-laiwo 

 

Part No Description W(mm) W1(mm) H(mm) H1(mm) D(mm)
TPN04-125S 4 Ways with 4 Pole 125A Main Switch and 20/40kA DP Surge Protective Device 465 321 506 409 105
TPN06-125S 6 Ways with 4 Pole 125A Main Switch and 20/40kA DP Surge Protective Device 465 321 560 463 105
TPN08-125S 8 Ways with 4 Pole 125A Main Switch and 20/40kA DP Surge Protective Device 465 321 614 517 105
TPN10-125S 10 Ways with 4 Pole 125A Main Switch and 20/40kA DP Surge Protective Device 465 321 668 571 105
TPN12-125S 12 Ways with 4 Pole 125A Main Switch and 20/40kA DP Surge Protective Device 465 321 722 625 105
TPN14-125S 14 Ways with 4 Pole 125A Main Switch and 20/40kA DP Surge Protective Device 465 321 776 679 105
TPN16-125S 16 Ways with 4 Pole 125A Main Switch and 20/40kA DP Surge Protective Device 465 321 830 733 105
TPN18-125S 18 Ways with 4 Pole 125A Main Switch and 20/40kA DP Surge Protective Device 465 321 884 787 105
TPN24-125S 24 Ways with 4 Pole 125A Main Switch and 20/40kA DP Surge Protective Device 465 321 1046 949 105

 


 

250A TP&N Metal Distribution Board

 

250A TP&N Metal Distribution Board-laiwo

 

Rated Voltage AC380V/415V  50/60Hz

 

Maximum loading current to 250A

 

Fitted with 3Pole 250A Main Switch

 

Section Neutral & Earth terminals fitted both sides

 

Fully enclosed 250A busbar system

 

Complete shrouding for main incomer and terminals

 

Removable gland plate at top & bottom

 

Surface Mounted

 

Certificated with CE/UKCA by BSEN61439-3

 

OEM/ODM Service

 

250A TP&N Metal Distribution Board-laiwo

 

Part No Description W(mm) W1(mm) H(mm) H1(mm) D(mm)
TPN04-250 4 Ways with 3 Pole 125A Main Switch Incomer 456 321 506 109 120
TPN06-250 6 Ways with 3 Pole 125A Main Switch Incomer 456 321 560 463 120
TPN08-250 8 Ways with 3 Pole 125A Main Switch Incomer 456 321 614 517 120
TPN10-250 10 Ways with 3 Pole 125A Main Switch Incomer 456 321 668 571 120
TPN12-250 12 Ways with 3 Pole 125A Main Switch Incomer 456 321 722 625 120
TPN14-250 14 Ways with 3 Pole 125A Main Switch Incomer 456 321 776 679 120
TPN16-250 16 Ways with 3 Pole 125A Main Switch Incomer 456 321 830 733 120
TPN18-250 18 Ways with 3 Pole 125A Main Switch Incomer 456 321 884 787 120
TPN24-250 24Ways with 3 Pole 125A Main Switch Incomer 456 321 1046 949 120

 


 

100A Compact TP&N Metal Distribution Board

 

100A Compact TP&N Metal Distribution Board-laiwo

 

Rated Voltage AC380V/415V  50/60Hz

 

Maximum loading current to 100A

 

Fitted with 4Pole 100A Main Switch

 

Supplied with Neutral Cable/Live Busbar and Terminal Links

 

Removable gland plate at top

 

Surface Mounted

 

Certificated with CE/UKCA by BSEN61439-3

 

OEM/ODM Service

 

100A Compact TP&N Metal Distribution Board-laiwo 

Part No Description W(mm) H(mm) D(mm)
WTPN02-100C 2 Ways Horizontal with 4Pole 100A Main Switch 325 265 103
WTPN03-100C 3 Ways Horizontal with 4Pole 100A Main Switch 398 265 103

 


 

Engineered for Durability: Materials and Construction

 

Our distribution boards are built to last, starting with the selection of high-grade materials. Each enclosure is constructed from robust metal, finished in a modern and clean white RAL7035. This not only provides a professional aesthetic but also ensures exceptional durability and resistance to environmental factors common in industrial and commercial settings, making them ideal for Heavy Duty Distribution Equipment.

 

Underneath the resilient exterior, you'll find a fully enclosed busbar system, designed to handle maximum loading currents of up to 125A or 250A. This enclosed system provides enhanced safety and protection for the internal components. Furthermore, all main incomer and terminals are equipped with complete shrouding, offering an additional layer of safety and compliance. We are dedicated to being a top MCB Distribution Box Supplier you can trust.

 


 

Precision in Production: The Manufacturing Process

 

Our commitment to quality extends to our manufacturing processes. Each 3-phase distribution board is engineered for precise functionality and ease of installation. They are rated for AC380V/415V at 50/60Hz, accommodating a wide range of power requirements. For those seeking Manufacturing Electrical Distribution solutions, our boards are a prime choice.

 

Thoughtful design features, such as sectional Neutral and Earth terminals fitted on both sides, simplify wiring and offer greater flexibility during installation. We also incorporate removable gland plates for ease of cable entry at the top and bottom of the board, allowing for effortless cable management. This attention to detail in manufacturing translates into significant time and cost savings for Electrical Contractor Distribution Boards and Building Electrical Panel Suppliers.

 


 

Designed for Versatility: Enclosure and Configurations

 

Understanding the diverse needs of our B2B partners, our distribution boards are designed for surface mounting, offering straightforward integration into various electrical infrastructures. The range includes models accommodating up to 3 x 24 ways, providing ample flexibility to cater to different circuit requirements. Whether you need a compact 2-way horizontal solution for 100A boards or a robust 24-way setup for 125A or 250A systems, our product line offers the versatility you need for Commercial Construction Electrical and Residential Building Distribution Boards.

 

Beyond the standard configurations, we also offer OEM/ODM services, allowing for custom solutions tailored to your specific project demands. We are proud to be OEM Distribution Board Manufacturers and ODM Consumer Unit Suppliers, offering Private Label Distribution Equipment and Custom Electrical Panel Manufacturers services. For those requiring Bulk Electrical Distribution Equipment or Volume Electrical Equipment Purchasing, we are your Wholesale Electrical Panel Suppliers and Trade Electrical Distribution Products partner.

 


 

Assured Quality and Compliance

 

We understand that trust is built on proven compliance. All our 3-Phase Metal Distribution Boards are rigorously tested and certified with CE/UKCA by BSEN61439-3. This certification underscores our adherence to stringent European and UK safety and performance standards, providing you with peace of mind and guaranteeing the reliability of our products in your critical applications. For Industrial Electrical Equipment Suppliers and those initiating a Distribution Board RFQ or Power Panel Procurement RFP, our certifications demonstrate our commitment to quality.

 

In conclusion, our 3-Phase TP&N Metal Distribution Boards represent the pinnacle of engineering and manufacturing excellence. From the durable materials and precision in production to the versatile designs and certified compliance, every aspect is crafted to deliver a superior solution for your electrical distribution needs. Partner with us, your reliable B2B Electrical Distribution Partners and Authorized Electrical Equipment Dealers, for high-performance distribution boards that empower your projects with unmatched efficiency and safety. We welcome your Consumer Unit Tender and Electrical Distribution Equipment Bid.

 

Request an 3 phase distribution board quotation today—optimize your electrical infrastructure with certified, scalable power distribution.

 

Learn More: 

3 Phase Distribution Boards Market Analysis: Trends, Opportunities, and Strategic Insights

What is the difference between SPN and TPN distribution board

Your Definitive Guide to TP&N Distribution Boards

Distribution Boards: A Comprehensive Guide for Professionals and Consumers

 


 

About Laiwo Faqs

 

Q1: What quality control processes are implemented by Laiwo Electrical for their circuitprotection devices?
 

ANS:

 

Raw Materials: UL/CE certified, conductivity/protection controlled.
 

Processing: Standardized precision manufacturing, full-process QC.
 

Inspection: 100% tested (voltage/insulation/temp rise), traceability reports.

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