3M, Scotchlok Pigtail Wire Splice Connector, Blue, Insulated, Tin 22 to 14 AWG

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3M UB2 Series Tap Wire Splice Connector, Blue/Clear, Insulated, Tin Plated 26 → 19 AWG

3M, Scotchlock 560B Tap Splice Connector, Blue, Insulated, Tin 18 → 16 AWG


A splice connector consists of a plastic clip that has a sharp metal insert that will safely cut through the plastic insulating jackets of two wires and crimps them together. Splice Connectors are used to make quick splices or connections with two or more pieces of wire. These splices are normally crimped or soldered so that the power conducted from the source cable to the next cable is transferred at inacceptable conductivity and pull-out resistance performance level.

## **How Electrical Splice Connectors Work**

Splice connectors provide a secure and reliable method for joining two or more [wires](https://au.rs-online.com/web/content/discovery/ideas-and-advice/a-deep-dive-into-the-world-of-cables-and-wires) together, ensuring a continuous electrical connection. They work by physically piercing the insulation of the wires and creating a conductive path between them.

The process typically involves stripping a small portion of insulation from the ends of the wires to be joined. The wires are then inserted into the splice connector, which contains a sharp metal insert or blade. 

As the connector is crimped or compressed, the metal insert cuts through the insulation and makes contact with the conductive core of the wires. This creates a low-resistance connection, allowing electrical current to flow seamlessly between the wires.

## **Types of splice connectors**

### **Butt Splice Connectors**

Butt splice connectors are used to join two wires end-to-end, extending the length of a wire or repairing a broken connection. They are typically cylindrical in shape and feature a crimp or solder connection.

### **Inline Splice Connectors**

Inline splice connectors, also known as tap splice connectors, allow you to tap into an existing wire without cutting or interrupting it. They feature a piercing mechanism that taps into the main wire and provides a branch connection for another wire.

### **Closed-End Splice Connectors**

These connectors have a closed end, preventing moisture or debris from entering the connection. Closed-end splice connectors are ideal for use in harsh environments or outdoor applications.

### **Barrel Foil Splice Connectors**

Barrel foil splice connectors are designed for crimping stranded wires. They feature a flared barrel that helps contain the wire strands during crimping, ensuring a secure and reliable connection.

### **Push Wire Splice Connectors**

These connectors offer a quick and tool-less connection method. They feature spring-loaded terminals that grip the wires when inserted, eliminating the need for crimping or soldering. They are often used in low-voltage applications.

## **Industrial Applications of Wiring Splicing Connectors**

Wiring splice connectors are pivotal components in many industrial sectors, including automotive and telecommunications, providing reliable and efficient connections for various electrical systems.

### **Automotive**

Splice connectors, particularly butt splice connectors and inline splice connectors, are extensively used in automotive wiring harnesses to connect various electrical components, sensors, and actuators. They provide secure and durable connections that can withstand vibration and harsh environmental conditions.

### **Telecommunications**

Splice connectors are essential for joining and branching cables in telecommunications networks. They ensure reliable signal transmission and connectivity for telephone lines, [ethernet cables](https://au.rs-online.com/web/c/cables-wires/networking-coaxial-cables/ethernet-cable/), and other communication infrastructure.

### **Construction**

Splice connectors are used in building wiring to connect electrical circuits, lighting systems, and other electrical installations. They provide a safe and efficient method for joining wires in [junction boxes](https://au.rs-online.com/web/c/enclosures-server-racks/enclosures/junction-boxes/) and other enclosures.

### **Industrial Automation**

Splice connectors are used in industrial automation systems to connect sensors, actuators, and control panels. They ensure reliable signal transmission and power distribution for automated processes.

### **Aerospace**

Splice connectors are used in aerospace applications to connect wiring harnesses in aircraft and spacecraft. They provide secure and reliable connections that can withstand extreme temperatures and vibration.

## **How to Choose the Right Cable Splice Connector**

While splice connectors may appear similar, they have distinct characteristics and are designed for specific applications. Choosing the right cable splice connector ensures a secure, reliable, and long-lasting connection.

### **1. Wire Type and Size**

Select a splice connector that is compatible with the type and size of wires you are joining. Consider factors such as wire gauge, stranded or solid conductor, and insulation type.

### **2. Application**

Determine the specific application and environment where the splice connector will be used. Consider factors such as voltage, current, temperature, and exposure to moisture or chemicals.

### **3. Connector Type**

Choose the appropriate connector type based on the application. Butt splice connectors are used for end-to-end connections, while inline splice connectors are used for tapping into existing wires.

### **4. Crimping or Soldering**

Decide whether you will be crimping or soldering the splice connector. Crimp connectors require a crimping tool, while solder connectors require a soldering iron and solder.

### **5. Insulation**

Ensure the splice connector has adequate insulation to prevent accidental contact and protect the connection from environmental factors.

## **Best Practices for Installing Splice Connectors**

Proper installation of splice connectors is essential for ensuring a secure, reliable, and long-lasting connection. By following these best practices, you can maximise the durability and conductivity of your wiring.

### **1. Strip the Wires Correctly**

Strip the insulation from the wires to the appropriate length specified by the splice connector manufacturer. Avoid nicking or damaging the wire strands during stripping.

### **2. Insert Wires Fully**

Ensure the wires are fully inserted into the splice connector until they reach the end stop. This ensures proper contact with the metal insert and prevents loose connections.

### **3. Crimp or Solder Properly**

If using crimp splice connectors, use the correct crimping tool and apply adequate pressure to create a secure crimp. If soldering, use the appropriate solder and soldering iron to create a strong and reliable solder joint.

### **4. Insulate the Connection**

After crimping or soldering, apply heat shrink tubing or electrical tape to insulate the connection and protect it from moisture and environmental factors.

### **5. Strain Relief**

Provide strain relief to the connection by securing the wires to prevent pulling or tension on the splice connector. This can be achieved using [cable ties](https://au.rs-online.com/web/c/cables-wires/cable-ties-fixings/cable-ties/) or other strain relief devices.

## **Trusted Crimp Splice Connectors Manufacturer, Supplier & Distributor in Australia**

RS Components is your reliable source for high-quality splice connectors in Australia. We are a leading manufacturer, supplier, and distributor of a wide range of wire splicing connectors, including butt splice connectors, inline splice connectors, and crimp splice connectors. We proudly offer products from top brands like [TE Connectivity](https://au.rs-online.com/web/b/te-connectivity/), [Molex](https://au.rs-online.com/web/b/molex), and [MECATRACTION](https://au.rs-online.com/web/b/mecatraction), ensuring reliability and performance. 

Whether you need splice connectors for automotive wiring, telecommunications, or industrial applications, we have the perfect solution for your needs. 

Explore our extensive range of splice connectors and experience secure and durable electrical connections.

## **Buy Splice Connectors from RS**

RS offers fast delivery of splice connectors and other splicing tools like [crimping kits](https://au.rs-online.com/web/c/connectors/wire-terminals-splices/crimping-kits/), [spade connectors](https://au.rs-online.com/web/c/connectors/wire-terminals-splices/spade-connectors/), and [bullet connectors](https://au.rs-online.com/web/c/connectors/wire-terminals-splices/bullet-connectors/). For more details on delivery services and fees, please refer to our [Delivery](https://au.rs-online.com/web/content/support/all-articles/delivery) page.



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