Feed Through Terminal Blocks

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

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.

🔹Why use feed through terminal blocks for power distribution?

💡They provide a direct, low‑resistance path for connecting conductors, ensuring efficient and safe power transfer across circuits.

🔹What’s the advantage of DIN‑rail mounted feed through terminal blocks?

💡They allow quick installation, modular expansion, and standardized sizing for control panels and switchgear assemblies.

🔹When should I choose a 125A feed through terminal block?

💡For heavy‑duty applications requiring high‑current handling with minimal voltage drop and reliable long‑term clamping force.

🔹How do compact feed through terminal blocks save panel space?

💡Their slim housing and optimized conductor entry points maximize wiring density without sacrificing electrical performance.

🔹Why select a feed through terminal block with an integrated test point?

💡It allows circuit testing and troubleshooting without disconnecting wires, reducing downtime during maintenance.

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