Three Phase Terminal Block​
LK-3PH Series

UL/IEC certified DIN rail terminal blocks for three-phase power distribution & industrial automation. Engineered for space-saving, high-density wiring in control cabinets.

  • UL 1059
  • IEC 60947-7-1
  • CE / IECEx
  • UL94 V-0
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three phase terminal block
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All Types
  • DIN Rail 3-Phase
  • Feed-through
  • Ground / PE
  • Fuse/disconnect
All connections
  • Screw clamp
  • Push-in (spring)
  • Stud / bolt
Current rating
  • ≤ 65A
  • 65A - 125A
  • ≥ 125A

Three Phase Terminal Block

Choose from our most popular LK‑3PH series for 3‑phase distribution

LK-207 3P 100A

Feed-through / 3-Phase

  • 100A / 600V
  • 2 poles per phase, 25mm² / Ø8.5mm main
  • UL94 V-0 flame retardant
  • 3x6mm² / 3x4mm² taps
Get Three Phase Quote

LK-207B 125A

High current / 3-Phase

  • 125A / 690V
  • 2 poles per phase, 25mm² / Ø8.5mm main
  • UL94 V-0
  • 1x25mm² / Ø7.5mm auxiliary
Get Three Phase Quote

LUK-PT 3P 65A

Push-in (spring) 3‑Phase

  • 65A / 500V
  • 16mm², direct plug-in
  • 50% less insertion force
  • Modular assembly
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LK-207PE 3P

PE / Ground 3-Phase

  • 100A ground path
  • 25mm² PE connection
  • UL94 V-0, green-yellow
  • Integrated DIN rail foot
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Vibration-proof

Rising clamp mechanism ensures secure connection even under heavy industrial vibration.

Modular & flexible

Freely combine poles, add end covers & cross-connectors for any 3‑phase configuration.

Clear marking

Central marking slot for industry-standard labels, test points for easy troubleshooting.

Global certified

UL, IEC, CE, ATEX, IECEx – ready for panels exported worldwide.

Engineered for harsh environments & cabinet synergy

photovoltaic combiner boxes

Photovoltaic

Photovoltaic combiner boxes

Our flame-retardant 3‑phase terminals ensure long DC/AC connection life, paired with Linkwell cabinet air conditioners for thermal stability outdoors.

wind power pitch control

Wind Turbine

Photovoltaic combiner boxes

Vibration‑proof terminals with corrosion‑resistant plating, integrated with Linkwell thermostats & cabinet heaters for extreme cold starts.

ev charging stations

EV Charging

Photovoltaic combiner boxes

High‑current 3‑phase terminals for fast charging cabinets, working with Linkwell ventilation fans to keep electronics cool.

automation control panels

Automation

Photovoltaic combiner boxes

Space‑saving double‑level 3‑phase terminals with clear marking, alongside Linkwell wiring ducts & DIN rail.

A Trusted Partner for Industrial Components

Linkwell’s Three Phase Terminal Blocks are engineered as the backbone of safe and organized power distribution in industrial control panels. Designed for high-density applications, our blocks ensure reliable connectivity and clear phase separation for motors, drives, and automation systems.

Developed by our in-house engineering team, each terminal block undergoes rigorous validation of material quality and electrical performance—from contact resistance to dielectric strength—guaranteeing the consistency and long-term reliability that global B2B clients and panel builders demand.

  • Contact resistance test
    ≤5µΩ guaranteed
  • Dimension vision system
    ±0.05mm accuracy
  • Temperature rise
    IEC 60947 compliant
Request Datasheet
mechanical thermostats factory

Certifications & Clients

Trusted by global customers, our mechanical thermostats meet international certifications and deliver proven reliability across regulated industrial applications worldwide consistently.

 

CE
UL
RoHS
ATEX
CSA
CCC
ISO9001
ISO14001
An electrical panel manufacturer praised our mechanical thermostats for consistent switching accuracy, easy installation, and full compliance with certification requirements.
Markus Schneider from Germany
Markus Schneider
From Germany
A renewable energy equipment supplier reported improved system stability after integrating our mechanical thermostats into inverter and battery enclosures successfully.
Ahmed Al Fahad from Saudi Arabia
Ahmed Al-Fahad
From Saudi Arabia
A telecommunications operator highlighted long service life and zero power consumption when using our mechanical thermostats outdoors under demanding conditions.
Engineer from canada
Emily Johnson
Canada
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FAQs

Can I get samples before placing a bulk order?

Yes, sample orders are welcome. We can provide pre-production samples for your evaluation and testing. Please contact our sales team with the specific part numbers and quantities you require.
The standard MOQ is 100 pieces per model. However, we understand project needs vary — feel free to discuss mixed item orders or consolidated MOQs with our sales team.
Yes, we offer custom laser marking (logos, part numbers, or traceability codes) and housing colors for volume orders. Customized packaging and labeling are also available upon request.
For stock items, we ship within 7 working days. For production orders, lead time is typically 20–25 days, depending on quantity and customization requirements.
Our in-house engineering team is available to assist with technical inquiries, product selection, and panel design recommendations. We can also provide 3D models, datasheets, and wiring diagrams upon request.

Contact & Inquiry

Contact us today for detailed product information, quotes, or expert technical support. Simply complete the form with your name, email, company, country, and inquiry, and our team will get back to you quickly. You can also connect with us directly via WhatsApp, email, or phone for fast and reliable assistance.

Ask for Samples Now