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Busbars

Engineered for demanding thermal, mechanical and integration challenges, Molex busbars enable design teams to optimize space, enhance system robustness, accelerate time to market and confidently meet evolving industry standards across diverse applications. With decades of design and manufacturing expertise, regional engineering support, and a global production footprint to deliver, Molex delivers reliable and compact power-distribution solutions, streamlining high‑power integration from prototype to volume production.

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Busbar Solutions for High-Current Power Distribution

Liquid Cooled Busbars

As power density in data centers rises, thermal constraints impact current capacity and drive the need for reliable and customizable solutions. Liquid-cooled busbars from Molex integrate dedicated liquid coolant channels directly into high-current busbar assemblies to significantly increase power density and reduce operating temperature in compact electrical systems. This capability enables higher continuous current ratings, reduced thermal derating and more compact, high-power architectures for data centers and AI/GPU servers.

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Laminated Busbars

Consisting of multiple conductive layers bonded with thin insulation, laminated busbars from Molex are compact, high-performance solutions designed to minimize parasitic inductance and electromagnetic interference, improve thermal management and enhance reliability in complex systems. These busbars provide easy integration in power distribution architectures and a broad range of insulation and plating options for design flexibility.

Rigid Busbars

Robust, high-current-carrying capacity rigid busbars from Molex deliver outstanding durability, thermal stability and streamlined integration for long-term reliability, withstanding vibration, wear and harsh conditions. For performance optimization, these busbars offer flexible material and surface finish options using solid copper or aluminum conductors.

Flexible Busbars

Available in braided, rope, multi-layer and hybrid styles, flexible busbars from Molex ease routing through complex geometries and tight spaces, providing exceptional vibration resistance and reducing mechanical stress on connections. Customizable to meet specific design requirements, these busbars streamline installation with fewer connectors and less complex wiring, while enhancing reliability with fewer solder joints for lower failure risks.

OCP ORv3 Busbars

As the demand for data centers and decentralized power management solutions increases, industries need greater flexibility to scale operations accordingly. Developed in alignment with the Open Compute Project’s (OCP) definitions for power rack infrastructure, Molex OCP ORv3 busbars are outstanding connectivity solutions for power distribution, balancing spatial, thermal and power efficiency requirements with the flexibility to meet high-capacity demands.

Grounding Straps

UL-certified grounding jumpers from Molex meet rigorous safety standards, ensuring performance reliability with standard compliant solutions. These grounding straps have fused terminations with solid crimps on both ends for a high pull force and solder dipped ends to remove air gaps, ensuring robust retention.

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Features and Benefits

As power demands rise in various industries, the challenge of delivering higher current in increasingly compact spaces without compromising performance is more prevalent. Design engineers must manage heat dissipation, electrical noise and hotspots under heavy and sustained loads, while also maintaining reliability, safety and efficiency in more complex system architectures. Additionally, designers need scalable power structures that transition smoothly from prototype to production without redesign.

Overcoming these challenges involves engineered power pathways that improve electrical performance while effectively managing thermal requirements in a wide range of applications. Customized, compact solutions with production-ready designs help eliminate costly redesigns and accelerate time to market, supporting complex systems for streamlined scalability.

Fully customizable and scalable, Molex busbars meet specific electrical, mechanical and thermal requirements across diverse applications, including OCP ORv3 and liquid-cooled data center needs. These busbar architectures reduce resistance and impedance while increasing surface area for improved heat dissipation, enhancing efficiency and extending system life. Available in compact laminated multi-layer assemblies, flexible braided designs and hybrid busbar styles, Molex busbars support a wide range of power densities and layouts. These products enable scalable, production-ready designs for efficient system integration.

Optimized for High-Density, High-Temperature Environments

Designed to perform reliably in high-power, high‑density and elevated-temperature environments, Molex busbar solutions reduce overall assembly size and weight while improving thermal dissipation and managing heat generation. Precision-engineered materials, advanced insulation options and proven plating technologies ensure long‑term performance in demanding applications such as electric vehicles, data centers, industrial automation and power electronics.

Engineered for Consistent Electrical Performance

Molex busbar solutions provide consistent electrical performance with controlled conductor spacing, optimized geometries, and copper or aluminum materials to deliver predictable electrical behavior across the system lifecycle. The result is improved efficiency, increased reliability and enhanced signal integrity in complex power distribution systems.

Customizable Busbar Designs for Diverse Applications

From initial concept and rapid prototyping to validation and scalable production, Molex enables fast development cycles and global supply. Flexible design options ensure seamless integration into demanding power distribution applications across automotive, industrial, data center, energy and commercial markets. Molex provides end‑to‑end busbar customization supported by global design services, a dedicated new product introduction (NPI) design cell, and worldwide manufacturing locations.

Applications by Industry

Avionics
Maritime propulsion systems
Spacecraft
Radar systems
Unmanned vehicles

Agricultural machines
Mining equipment

Electric vehicles
Energy storage systems
Inverters
Power distribution units (PDUs)

Avionics
Radar systems
Unmanned vehicles

Battery energy storage systems (BESS)

Industrial robotics
Soft starters
Variable frequency drives

Base stations
Routers

Data storage units
Enterprise switches
PDUs
Power shelves
Servers
Uninterruptable power supplies

AI and machine learning
Hyperscale data centers
Open compute project

Rack-mount servers

This is not a definitive list of applications for this product. It represents some of the more common uses.

Frequently Asked Questions

What is a busbar? 

A busbar is a solid conductor, typically made of copper or aluminum, used to distribute high current efficiently within electrical systems. Busbars replace complex wire harnesses with a single, compact structure that improves electrical performance, thermal management and reliability.

What are busbars used for? 

Busbars are commonly used in applications that require reliable high‑power distribution, including electric vehicles (EVs), energy storage systems, data centers, industrial automation, telecommunications equipment and power distribution units (PDUs).

What types of busbars does Molex offer?

Molex offers three primary busbar types: rigid busbars for fixed high‑current pathways; flexible busbars for vibration tolerance and movement; and laminated busbars for reduced inductance, improved EMI control and compact designs. Each type can be customized based on application needs. Molex also provides sub-assemblies with integrated connector options from their high-power connector portfolio.

Does Molex offer busbar prototyping capabilities?

Yes, Molex offers dedicated busbar prototyping and new product introduction (NPI) support to help accelerate busbar development. The Molex busbar NPI cell is equipped to rapidly design, build and test prototype busbars, enabling early validation of electrical, mechanical and thermal performance. By combining front‑end engineering collaboration with quick‑turn prototyping, Molex helps customers reduce risk, refine designs and move more efficiently from concept to production.

What materials are Molex busbars made from? 

Molex busbars are typically manufactured from copper or aluminum, with optional tin, nickel or silver plating. A variety of insulation options, including powder coating and laminated insulation materials, are available to support safety, durability and environmental protection.

Does Molex offer liquid‑cooled busbars?

Molex supports liquid‑cooled busbar solutions through custom, application-specific designs. For high‑power systems where thermal management is crucial, such as data centers, server rooms or energy storage applications, Molex engineering teams collaborate with customers to evaluate cooling requirements and integrate liquid‑cooling concepts into the overall busbar design. This custom approach helps improve heat dissipation, power density and system reliability in demanding environments.

Can Molex design custom busbar solutions?

Yes, Molex specializes in custom busbar design and manufacturing. The engineering teams work directly with customers to optimize geometry, materials, insulation, plating and attachment methods, while supporting rapid prototyping and low‑to‑high volume production.

Are Molex busbars suitable for high‑vibration environments?

Yes, flexible and hybrid (flex‑to‑rigid) busbar designs are well‑suited for high‑vibration environments such as transportation, industrial equipment and EV applications, helping to reduce mechanical stress and ensure system reliability.

What industries use Molex busbar solutions?

Molex busbars are used across a wide range of industries, including automotive, electrification, energy storage, data centers, telecommunications, industrial automation, aerospace and defense applications.