A breaker connecting strip, also known as a busbar or phase bar, is a vital component in modern electrical distribution. It is used to connect Miniature Circuit Breakers (MCBs) and other modular devices in a consumer unit or distribution board.
Our factory specializes in high-quality breaker connecting strips designed for safety, efficiency, and durability. By using a professional connecting strip instead of traditional cable bridges, you ensure a cleaner, safer, and more reliable electrical system.
What is a Breaker Connecting Strip?
In simple terms, a breaker connecting strip is a metal bar (usually made of copper) that provides a bridge between multiple circuit breakers. Instead of cutting many small pieces of wire to link breakers together, an electrician uses one solid strip.
This strip is covered in an insulating material, usually PVC, to prevent accidental contact with live electricity. It is the “backbone” of the electrical panel, ensuring that power is distributed evenly to all circuits.
Main Types of Breaker Connecting Strips
There are two main designs used in the industry. Our factory produces both types in various lengths and thicknesses to meet global standards.
1. Pin Type Connecting Strip
The Pin Type features straight, needle-like metal prongs. These pins slide into the tunnel terminals of the circuit breaker.
- Best for: Standard MCBs with tunnel terminals.
- Benefit: Provides a very tight and secure electrical connection.
2. Fork Type (U-Type) Connecting Strip
The Fork Type has U-shaped prongs. These are designed to fit under the screw head of the circuit breaker terminal.
- Best for: Breakers that use screw-and-washer terminals.
- Benefit: Extremely easy to install and remove without fully taking out the screw.
Technical Specifications Table
To help you choose the right product, here are the standard specifications we offer. We can also provide custom lengths based on your project needs.
| Product Specification | Type | Number of Poles | Material | Current Rating (Amps) |
|---|---|---|---|---|
| Pin Type 1P | Single Phase | 1P (12 to 54 pins) | T2 Copper / PVC | 32A−100A |
| Pin Type 2P | Double Phase | 2P (6 to 27 sets) | T2 Copper / PVC | 63A−100A |
| Pin Type 3P | Three Phase | 3P (4 to 18 sets) | T2 Copper / PVC | 63A−125A |
| Fork Type 1P | Single Phase | 1P (12 to 54 forks) | T2 Copper / PVC | 32A−80A |
| Fork Type 3P | Three Phase | 3P (4 to 18 sets) | T2 Copper / PVC | 63A−100A |
| Custom Length | Any | Up to 1 meter | T2 Copper / PVC | Up to 125A |
Key Materials Used in Manufacturing
The quality of a breaker connecting strip depends on the materials used. Our factory follows strict quality control to ensure every piece is safe.
The Conductive Core: T2 Copper
We use high-purity T2 copper. Copper is the best material for electrical strips because:
- It has very low electrical resistance.
- It does not get too hot under high loads.
- It is flexible enough to be punched without cracking.
The Insulation: Fireproof PVC
Safety is our priority. The plastic housing of our strips is made from high-grade PVC.
- Fire Resistance: Our PVC is flame retardant.
- High Voltage Protection: It prevents electricity from jumping (arcing) between phases.
- Durability: The material does not become brittle over time.
Why Use a Breaker Connecting Strip Instead of Wires?
Many older buildings use small wire “jumpers” to connect breakers. However, professional contractors now prefer breaker connecting strips for several reasons:
- Neatness: The panel looks organized and professional.
- Speed: It is much faster to install a single strip than to cut and strip ten different wires.
- Reliability: Wires can come loose over time. A solid copper strip stays firmly in place.
- Heat Reduction: A solid bar has more surface area than a thin wire, which helps dissipate heat.
- Higher Current: Strips can handle higher amperage (100A or more) more safely than standard gauge wire.
Application Areas for Breaker Connecting Strips
Our products are used across many industries. Anywhere there is a circuit breaker panel, you will find a need for these strips.
- Residential Homes: Used in the main consumer unit to distribute power to lights and sockets.
- Commercial Offices: Essential for large electrical cupboards that power computers and HVAC systems.
- Industrial Plants: Used in heavy-duty control boxes for machinery.
- Solar Power Systems: Connecting DC breakers in solar combiner boxes.
- Infrastructure: Power distribution for street lighting and public transport systems.
Manufacturing and Customization at Our Factory
We are not just a supplier; we are a dedicated manufacturer. We understand that every market has different requirements.
Digital Precision and Sizes
We use automated punching machines to ensure the “pitch” (the distance between the pins) is exact. Common pitch sizes include:
- 18 mm Pitch: The standard for most global MCB brands.
- 27 mm Pitch: Used for larger industrial breakers.
Custom Services
If your project requires a specific thickness of copper (e.g., 1.5 mm or 2.5 mm), we can manufacture it. We also offer different colors for the PVC insulation, such as white, grey, or blue, to help with phase identification.
Comparison: Pin Type vs. Fork Type
| Feature | Pin Type | Fork Type |
|---|---|---|
| Visual Appearance | Straight Teeth | U-Shaped Teeth |
| Terminal Compatibility | Tunnel / Cage Terminals | Screw / Bolt Terminals |
| Installation Difficulty | Easy | Very Easy |
| Current Stability | Excellent | Very Good |
| Market Popularity | Very High (Europe/Asia) | High (Specific Brands) |
Frequently Asked Questions (FAQ)
1. Can I cut a breaker connecting strip to a shorter length?
Yes. You can cut the copper and the PVC to the length you need. However, you must ensure that the copper ends are not touching the metal box and that you use end caps for safety.
2. Do I need end caps for the strip?
Yes. End caps are plastic covers that go over the sharp cut ends of the strip. They prevent accidental electrical shocks and short circuits.
3. What is the maximum voltage these strips can handle?
Our standard breaker connecting strips are rated for up to 415V (for three-phase systems) and can withstand surge voltages according to international safety ratings.
4. Is copper better than aluminum for these strips?
Yes. While aluminum is lighter, copper is a much better conductor. It creates less heat and lasts much longer in electrical applications.
