⎯⎯ MCB Comb Busbar Manufacturer
MCB comb busbars for faster, cleaner circuit breaker panel wiring.
VIOX manufactures pin type and fork type MCB comb busbars for low-voltage distribution boards, including 1P, 2P, 3P, 4P, 1P+N and 3P+N configurations. Compare busbar types, phase layouts, size options, connector choices, and quotation requirements before ordering.
1P-4P
Pin/Fork
OEM
Built for panel builders and electrical distributors.
Focus the RFQ on the breaker terminal type, phase layout, cross section, length, current rating and packaging requirement.
- MCB, RCBO and RCCB distribution board wiring
- Pin type, fork type and C45 connector options
- Standard or custom production after drawing confirmation
⎯⎯ MCB Comb Busbar Manufacturer
Busbar and terminal supply for breaker panel assembly.
VIOX supplies MCB comb busbars, customized copper busbars, panel assembly busbars, C45 and TB busbar connectors, and brass terminals for low-voltage distribution boards. Choose standard models for common breaker rows or send your drawing for custom length, pole arrangement, conductor material, insulation and packaging requirements.
Breaker Rows
Custom Drawings
Customized busbars by tooth pitch, length, hole layout and conductor section.
Connectors
Documents
⎯⎯ Product Range
MCB comb busbar types for common distribution board layouts.
VIOX manufactures pin type and fork type MCB comb busbars for low-voltage distribution boards, including 1P, 2P, 3P, 4P, 1P+N and 3P+N configurations. Compare busbar types, phase layouts, size options, connector choices, and quotation requirements before ordering.
Pin Type
Straight-pin comb busbar for compatible miniature circuit breaker terminals. Suitable for clean row wiring where the breaker terminal design accepts pin insertion.
Fork Type
U-shaped fork contact comb busbar for breaker terminal structures that require fork engagement. Often selected when the panel design needs easy connection around terminal screws.
Custom
Customized Busbar
Custom busbar production based on drawing, sample or panel layout. Key details include conductor material, hole position, bending shape, surface treatment, insulation coverage and packing method.
Neutral Layout
Brass Terminal
Connector
Panel Assembly
Busbar assemblies for low-voltage distribution boards, control cabinets and OEM electrical panels. Designed around the actual breaker row, incoming feed and enclosure layout.
MCB Comb Busbar Size Chart
Comb busbar dimensions and catalog parameters.
| Model Series | Phases | Cross Sections | Length Options (mm) | Max Current |
|---|---|---|---|---|
| S-1L | 1-phase | 8-16mm² | 210, 1000, 1016 | 50-80A |
| S-2L | 2-phase | 8-16mm² | 210, 1000, 1016 | 50-80A |
| S-3L | 3-phase | 8-16mm² | 210, 1000, 1016 | 50-80A |
| S-4L | 4-phase | 8-16mm² | 210, 1016 | 50-80A |
| S-3L+N | 3P+N | 8-16mm² | 210, 1000 | 50-80A |
| P-1L | 1-phase | 8-16mm² | 210, 1000, 1016 | 50-80A |
| P-2L | 2-phase | 8-16mm² | 210, 1000, 1016 | 50-80A |
| P-3L | 3-phase | 8-16mm² | 210, 1000, 1016 | 50-80A |
| P-4L | 4-phase | 8-16mm² | 210, 1016 | 50-80A |
| P-1+N | 1P+N | 8-16mm² | 210, 1000 | 50-80A |
| P-1+N-LE | 1P+N-LE | 8-16mm² | 210, 1000 | 50-80A |
| C-1L | 1-phase | 8-16mm² | 210, 1000, 1016 | 50-80A |
| C-2L | 2-phase | 8-16mm² | 210, 1000, 1016 | 50-80A |
| C-3L | 3-phase | 8-16mm² | 210, 1000, 1016 | 50-80A |
| C-4L | 4-phase | 8-16mm² | 210, 1016 | 50-80A |
| Model Series | Phases | Connector Type | Cross Sections | Length Options (mm) | Max Current |
|---|---|---|---|---|---|
| F-1L | 1-phase | Fork (M6) | 8-16mm² | 210, 1000, 1016 | 50-80A |
| F-2L | 2-phase | Fork (M6) | 8-16mm² | 210, 1000, 1016 | 50-80A |
| F-3L | 3-phase | Fork (M6) | 8-16mm² | 210, 1000, 1016 | 50-80A |
| F-3L (M5) | 3-phase | Fork (M5) | 8-16mm² | 210, 1000, 1016 | 50-80A |
| F-4L | 4-phase | Fork (M6) | 8-16mm² | 210, 1016 | 50-80A |
| G-1L | 1-phase | Fork (M6) | 8-16mm² | 210, 1000, 1016 | 50-80A |
| G-2L | 2-phase | Fork (M6) | 8-16mm² | 210, 1000, 1016 | 50-80A |
| G-3L | 3-phase | Fork (M6) | 8-16mm² | 210, 1000, 1016 | 50-80A |
| G-4L | 4-phase | Fork (M6) | 8-16mm² | 210, 1016 | 50-80A |
| G-3L+N | 3P+N | Fork (M6) | 8-16mm² | 210, 1000 | 50-80A |
⎯⎯ Technical Specifications
Technical Specifications for Busbar Approval
| Parameter | What It Means | VIOX Confirmation Method | Why Buyers Ask |
|---|---|---|---|
| Rated current, In | Continuous current rating for the selected busbar or terminal model. | Confirmed by conductor section, model design and project requirement. | Prevents undersized busbars in breaker rows and panel assemblies. |
| Rated insulation voltage, Ui | Voltage value used to define insulation performance and electrical clearance context. | Confirmed by model datasheet, insulation design and assembly requirement. | Needed for low-voltage distribution board technical approval. |
| Rated impulse withstand voltage, Uimp | Impulse voltage withstand level related to overvoltage stress in the installation environment. | Confirmed by insulation distance, application category and project documentation. | Important for engineers reviewing panel safety margin and installation category. |
| Short-time withstand current, Icw | Short-duration current withstand capability relevant to panel assembly fault conditions. | Reviewed with busbar cross section, support method and assembly design. | Helps panel builders evaluate short-circuit performance at assembly level. |
| Copper material | Conductor grade such as T2 copper or C11000 copper when specified. | Material declaration can be supplied by model or order requirement. | Supports conductivity, corrosion and procurement quality review. |
| Insulation material and flame rating | PA66, PVC or other insulation material; UL94 V-0 grade can be specified where available. | Confirmed by material grade, supplier certificate and model structure. | Important for panel safety, export documentation and buyer audits. |
| Surface treatment | Bare copper, tin plated, nickel plated or project-specific finish. | Confirmed by drawing, sample, corrosion requirement and order quantity. | Supports contact stability, storage condition and environmental suitability. |
⎯⎯ Standards & Documentation
Clear compliance language without overclaiming.
| Reference / Document | How to Use It on a Busbar Project | VIOX Page Wording |
|---|---|---|
| IEC 61439-1 | Used as an assembly-level reference for low-voltage switchgear and controlgear assemblies. | Busbars can be reviewed for use in assemblies designed around IEC 61439-1 requirements. |
| IEC 60947-7-1 | Relevant when reviewing terminal blocks or terminal connection components for copper conductors. | C45/TB connectors and brass terminal applications can be checked against terminal connection requirements where applicable. |
| CE / RoHS | Requested by importers, distributors and OEM buyers for specific product models. | CE, RoHS and material documentation can be confirmed by model and order requirement. |
| UL94 V-0 | Used to describe the flammability grade of plastic insulation material, not a complete product UL listing. | UL94 V-0 flame-retardant insulation material option is available by model where specified. |
| Test reports | May include dielectric withstand, temperature rise, material or dimensional inspection records. | Project test documentation can be discussed before order confirmation. |
How to Choose
Choose by product line, terminal style and electrical requirement.
Busbars are often approved inside a complete low-voltage assembly, so the correct documentation depends on the model and final panel design. VIOX can support technical review with model-level documents and project-specific confirmation where available.
1. Choose the correct product line.
- Use pin or fork type for modular breaker row distribution.
- Use customized busbar for special drawing, punched hole or bending requirements.
- Use brass terminal or C45/TB connector for incoming feed and connection points.
2. Match the breaker terminal type.
- Use pin type for compatible straight-in terminal structures.
- Use fork type when the terminal accepts U-shaped fork engagement.
- Use a connector when incoming feed position or cable entry requires a separate terminal block.
3. Confirm phase, pole and panel geometry.
- Confirm pole spacing, terminal position and neutral/ground arrangement.
- Confirm incoming feed direction and available enclosure space.
- Request drawing review for custom length, hole position or bending shape.
4. Confirm ratings, documents and packing.
- Confirm material such as T2/C11000 copper or brass grade by drawing.
- Confirm UL94 V-0 insulation material option where required.
- OEM label, barcode and carton packing can be discussed for distributors.
⎯⎯ Compatibility
Compatibility checklist for busbars, connectors and brass terminals.
Use this checklist before sampling or mass production. It helps buyers avoid a common problem: the rating looks correct, but the contact shape, spacing, thread, hole position or incoming connection does not match the real panel.
| Check Point | What to Confirm | Why It Matters | Useful Buyer Input |
|---|---|---|---|
| Breaker terminal shape | Pin, fork, cage terminal, screw terminal or special connector requirement. | Wrong contact style can create poor fit, overheating risk or failed installation. | Breaker photo, model number, terminal close-up. |
| Module spacing | Breaker width, pole spacing and row layout. | Spacing mismatch prevents correct insertion across the breaker row. | Panel layout drawing or sample busbar. |
| Phase sequence | 1P, 2P, 3P, 4P, 1P+N or 3P+N arrangement. | Phase layout determines how power is distributed across the connected breakers. | Wiring diagram and circuit schedule. |
| Incoming connection | Side feed, central feed, cable lug, TB connector or dedicated busbar connector. | The incoming connection affects panel space, cable entry and serviceability. | Cable size, entry direction and connector preference. |
| Brass terminal details | Thread size, hole diameter, plating, conductor fit and tightening method. | Small terminal differences can change installation fit and contact stability. | Drawing, sample, material request and terminal photo. |
| Insulation and cover | Insulation color, exposed conductor length, end caps and protective covers. | Insulation and covering should match the panel design and installation practice. | Target market, enclosure layout and installer requirement. |
Factory Capability
Manufacturing support for busbars, connectors and brass terminals.
Step 01
Requirement review
We confirm product line, conductor material, pole layout, breaker compatibility, Ui/Uimp/Icw fields, length, connector needs and target quantity.
Step 02
Sample or drawing check
Step 03
Production inspection
Step 04
Testing and packing
Quality Focus
What VIOX checks before busbar and terminal shipment.
A reliable busbar must fit the intended breaker row, maintain stable contact, protect the conductor correctly and remain consistent across repeat orders. VIOX quality checks focus on the small details that usually cause field problems: loose contact, wrong pitch, exposed copper, sharp burrs and unclear part identification.
Tooth pitch and terminal fit
Comb tooth spacing, pin insertion depth and fork width are checked against the intended MCB, RCBO or RCCB terminal layout before bulk supply.
Burr removal and contact surface
Insulation and dielectric check
Temperature rise and batch records
Applications
Where VIOX busbars and brass terminals are used.
VIOX busbars, connectors and brass terminals are designed for low-voltage distribution boards, modular breaker rows, control panels and OEM electrical assemblies where clean wiring and repeatable installation matter.
Distribution boards
MCB busbars simplify power distribution across breaker rows in residential, commercial and light industrial boards.
Control panels
OEM electrical assemblies
Electrical distribution supply
Technical Resources
Related guides for busbar selection, compatibility and troubleshooting.
These guides help buyers confirm busbar type, breaker compatibility, material options and common installation risks before placing an order.
Compare the main selection factors before choosing an MCB busbar.
Supports visitors comparing terminal styles before ordering.
Check breaker terminal, spacing and fit before sampling or ordering.
Supports buyers comparing material and surface treatment options.
Send the busbar and terminal details once. Get a cleaner quotation faster.
⎯⎯ FAQ
Frequently Asked Questions
What is an MCB busbar?
An MCB busbar, often called an MCB comb busbar, is a conductive bar used to distribute incoming power across multiple miniature circuit breakers in a distribution board. It replaces repeated short wires and helps create a cleaner, faster and more consistent breaker row connection.
What is a comb busbar?
A comb busbar has repeated teeth or contact points that connect multiple modular circuit breakers in one row. In MCB panels, comb busbars are commonly supplied as pin type, fork type, single-phase, multi-phase or neutral layouts.
What is the difference between pin type and fork type MCB busbar?
A pin type busbar uses straight pins that insert into compatible breaker terminals. A fork type busbar uses U-shaped fork contacts that fit around compatible terminal structures. The correct type depends on the breaker terminal design, not only the current rating.
Can VIOX supply 3 phase and 4 pole busbars?
How do I know if a busbar is compatible with my circuit breaker?
Check the breaker terminal shape, pole spacing, row layout, busbar insertion position, rated current and incoming connection method. The safest way is to send the breaker model number, terminal photo and panel drawing before placing the order.