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Feed Through Terminal Blocks

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 Enhancing Reliability & Efficiency with Advanced Thermal Management and Electrical Solutions

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Product Overview

Through-type terminal block, space-saving design, suitable for high-density electrical connections.

  • Double-end through-design: realize efficient connection and transmission of cables.
  • Space-saving structure: suitable for control cabinets and electrical equipment with high density installation.
  • Multi-voltage compatibility: supports electrical systems with multiple voltage levels.
  • High mechanical strength: improves shock and vibration resistance to ensure stable operation.
  • Convenient installation: equipped with standard mounting rails, installation and removal are more efficient.

 

 

Key Advantages

  • Reliable Electrical Continuity
    Optimized metal conductors provide low contact resistance and ensure stable current transfer across the terminal point under both AC and DC conditions.
  • Secure Clamping Mechanism
    The high-torque screw or spring clamp ensures firm wire retention, preventing loosening due to vibration, shock, or thermal cycling.
  • Space-Saving Modular Design
    Slim profiles and stackable mounting allow for high-density installation on DIN rails, maximizing cabinet space efficiency without sacrificing safety or accessibility.
  • Quick Identification & Bridging
    Integrated label slots and standardized bridge channels enable easy circuit marking and rapid configuration changes using jumpers or busbars.
  • Universal Compatibility
    Compatible with solid, stranded, or ferrule-fitted wires, the terminal blocks support a wide wire size range to fit diverse wiring needs.
  • Flame-Retardant Housing
    PA66 insulation (UL94 V-0 rated) resists high temperatures and mechanical stress, ensuring long service life in demanding environments.

Product Catagories

leipole Feed Through Terminal Blocks JPT

JTP Feed-through Terminal BlockConnection technologyJPT feed-through terminal block can bedirectly connected to the wire. That is, youcan connect solid wires or insulated termi-nals without any tools.The special spring design can easily push inthe solid wires or insulated terminals evenwith a wire cross section of 0.5mm² . By usingthe pull-out button, you can easily open thespring, loosen the wires and disconnect with-out touching any metal parts directly.

Part Number Rated Voltage Rated Current thickness length / height solid cross section（min-max） wdt_ID wdt_created_by wdt_created_at wdt_last_edited_by wdt_last_edited_at
JPT 2.5 / JPT 2.5-BU 800V 24A 5.2 58 / 38 0.50mm² - 4.00mm² 13 Kiva 13/06/2025 09:11 AM Kiva 19/06/2025 07:58 AM
JPT 1.5/JPT 1.5-BU 500V 17.5A 4.2 58 / 38 0.50mm² - 1.50mm² 21 Kiva 16/06/2025 05:40 AM Kiva 19/06/2025 07:58 AM
JPT 2.5-TW / JPT 2.5-TW-BU 800V 24A 5.2 68.4 / 38 0.50mm² - 4.00mm² 45 Kiva 19/06/2025 08:00 AM Kiva 19/06/2025 08:00 AM
JPT 2.5-QU/ JPT 2.5-QU-BU 800V 24A 5.2 78.7 / 38 0.50mm² - 4.00mm² 46 Kiva 19/06/2025 08:01 AM Kiva 19/06/2025 08:01 AM
JPTTB 2.5/JPTTB 2.5-BU 800V 24A 5.2 83.6 / 48.7 0.50mm² - 4.00mm² 47 Kiva 19/06/2025 08:02 AM Kiva 19/06/2025 08:02 AM
Part Number Rated Voltage Rated Current thickness length / height solid cross section（min-max）

Applications

  • Industrial Control Cabinets: Enables secure wiring for relays, PLCs, circuit breakers, and I/O devices.
  • Power Distribution Panels: Facilitates branching and feeding power to loads or subsystems through secure point-to-point wiring.
  • Automation Systems: Ideal for sensors, actuators, and low-voltage control signal routing in robotics and manufacturing lines.
  • Building Electrical Systems: Simplifies structured cabling for lighting, HVAC, and alarm systems.
  • Renewable Energy Installations: Connects PV strings, inverters, and battery systems with high contact reliability.

Basic Knowledge

What Is a Feed Through Terminal Block?A feed-through terminal block is a type of modular connector that allows an incoming wire on one side to connect to an outgoing wire on the other side through a conductive internal path. It is used to connect, organize, and distribute electrical circuits efficiently inside panels.

How Does It Work?

Conductors are inserted into each side of the terminal and secured using a screw or push-in mechanism. Current “feeds through” the metal contact inside the housing, allowing safe and reliable energy transmission.

Why Use Feed Through Blocks Instead of Wire Nuts or Soldering?

  • Standardization – Supports neat, repeatable wiring layouts
  • Safety – Reduces risk of loose wires or arcing
  • Maintenance-Friendly – Easy wire removal or addition
  • Scalability – Expandable via bridging accessories and stackable designs

Why Choose Leipole?

As a professional buyer, do you face these challenges?

❌ Delivery delays – affecting project progress and production line stability

❌ Poor technical adaptability – standard products cannot meet complex working conditions

❌ High hidden costs – frequent maintenance, excessive energy consumption, slow after-sales response

❌ Compliance risks – lack of international certification leads to customs clearance and warranty disputes

Leipole is proud to offer one-stop solution:

💎 Global layout, zero delivery delays

  • R&D and sales headquarter led by the team in Singapore – cutting-edge cooling technology iteration to ensure product leadership
  • Manufacturing base in Shanghai, China – ISO 9001 & ISO14001 certified, cost optimization + high quality control standards
  • Localized warehousing in 24 countries – spot shipments from the EU, America, and Southeast Asia, urgent orders arrive within 3 days

🔧 Deep customization capabilities to solve complex needs

  • OEM/ODM full-case support – from cooling structure design to branding customization, 100+ successful cases (Industrial Automation/ New Energy Industry/Data Centers)
  • Working condition simulation test – Free simulation of air volume, high temperature, high humidity and vibration environment to ensure 100% adaptability of the solution

🌍 Worry-free compliance, global access

  • Authoritative certification – CE, UL, RoHS, REACH full coverage, hassel-free customs clearance in Europe, America and Southeast Asia

🚀 Cost optimization throughout the entire life cycle

  • Energy consumption reduced by 30% – patented airflow design, saving 30% in electricity bills per year compared to peer product
  • 1-year warranty – redundant design of key components, failure rate <0.2%
  • 7×24 localized service – 50+ national technical teams, 4-hour response, direct supply of spare parts.

Customization Process

Accurate Demand Analysis

Professional engineers deeply understand your equipment parameters, application environment, and special requirements.

Customized Technical Solutions

R&D teams develop optimal heat dissipation solutions based on your needs, including airflow calculations and installation planning.

 Sample Testing and Validation

Provide samples for real-environment testing, collect data feedback, and ensure solution effectiveness.

Mass Production

After confirming the solution, production follows strict ISO9001 quality management systems to ensure batch stability.

FAQ

Q1: What wire types are compatible with JPT feed-through terminals?
Solid, stranded, and ferrule-terminated copper conductors are fully supported within the specified wire gauge range.Q2: Can the JPT Series be used for both power and signal wiring?
Yes. Models are available for both low-voltage signal and higher-current power applications.Q3: How are terminals labeled for identification?
Each block has a dedicated marking slot for printed or hand-written markers. Pre-printed Z-type or Zack markers can also be used.Q4: Do I need tools for installation?
For screw-type models, a screwdriver is required. Push-in variants allow tool-free conductor insertion for ferrule-ended wires.Q5: Are bridging accessories available?
Yes. LEIPOLE provides a range of standard plug-in bridges and jumper bars compatible with the JPT Series to enable multi-point connections.

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