You know that moment when everything just works? Your equipment runs smoothly, your designs come together effortlessly, and the project is on track. Behind that success is something critical—reliable power solutions that ensure your systems function flawlessly.
That’s where Cosel‘s reliable power solutions steps in. With over 50 years of experience quietly powering innovations across industries, Cosel’s AC-DC and DC-DC power supplies, along with their EMI filters, are built to keep things running without a hitch. Whether you’re working on a medical device or ensuring the reliability of industrial equipment, Cosel provides the backbone that lets your project shine.
At Relec, we’re excited to welcome Cosel to our portfolio, bringing you power solutions that elevate your projects.

Who Is Cosel?
Established in 1969 in Toyama, Japan, Cosel has earned a global reputation as one of the power industry’s key players. Their long-standing commitment to quality has led to the development of highly reliable, flexible solutions that address the needs of a wide range of industries. At Relec, we’re excited to bring you their impressive line-up of AC-DC power supplies, DC-DC converters, and EMI filters.
Power That Performs: Cosel’s AC-DC Power Supplies
Cosel’s range of AC-DC power supplies is designed to fit nearly every application you can think of, from small PCB-mounted units to high-wattage, front-end supplies. Their solutions are widely used in sectors such as healthcare, industrial automation, instrumentation and telecommunications.
Medical-grade models
Multiple cooling methods
Customisation available


DC-DC Converters: Flexibility in Every Format
For projects that demand efficient DC-DC conversion, Cosel’s selection of reliable power solution delivers reliability in spades. From low-power, onboard converters to high-power, brick-style converters, their range covers everything. These converters are known for their high-density, low-profile designs and baseplate cooling methods, making them perfect for space-constrained or harsh environments.
From compact wearables to large-scale energy systems, Cosel’s DC-DC converters consistently provide reliable and efficient power. With flexible customisation options, these converters can be tailored to meet the exact needs of your project, ensuring seamless integration and optimal performance.
EMI and EMC Filters: Safeguard Your System
Electromagnetic interference (EMI) and electromagnetic compatibility (EMC) are no joke, especially when dealing with sensitive electronics. Cosel’s comprehensive range of EMI and EMC filters is designed to protect your systems from harmful interference, ensuring that they meet even the strictest regulatory standards.
Cosel offers single-phase filters for smaller devices and three-phase filters for larger systems, providing solutions across a broad spectrum of frequencies and current ratings. Their ultra-high attenuation filters are especially useful in industries such as aerospace, automotive, and medical, where maintaining equipment reliability is critical.

Why Choose Relec Electronics’ & Cosel?
Relec Electronics and Cosel together offer more than just power solutions—we deliver confidence. Cosel’s commitment to short lead times, sample availability, and long warranties, combined with Relec’s expert guidance, ensures you get the right solution, right when you need it. Additionally, Cosel provides a comprehensive set of resources for many of their products. These resources include thermal application studies, reference PCBs, and schematics for CE approval, along with a complete Bill of Materials (BOM). This allows customers to streamline the production process with their chosen manufacturing partners. Cosel also supplies full Gerber files—making it easier to move from design to production efficiently.
Applications Across Industries
Cosel’s power supply solutions are used across a multitude of industries:
Medical devices
Medical-grade AC-DC power supplies ensure patient safety and equipment reliability.
Renewable energy
Cosel’s solutions help power clean energy systems with minimal downtime.
telecommunications
Their efficient DC-DC converters are perfect for powering communication infrastructure.
industrial automation
Rugged power supplies and filters keep machinery running smoothly, even in tough environments.
Our Cosel Range

CXLA150F Series

CXLA100F Series

UMA120F

UMCS60F

UMPS30F

UMCS30F

UMPS60F

MUW10

MUW1R5

MUW3

MUW6

MUS1R5

MUS6

MUS3
PDA600F
PDA300F

PDA150F

PDA100F

DCS1400B

YAC Series

TEPS10F

TEPS20F

TECS20F

TECS10F

PMP10

PMP06

PMM15

PMP03

PMM06

PMM10
Conclusion
Cosel’s reliable power solutions are now available through Relec Electronics. Whether you’re facing strict performance standards or just need a flexible solution that can grow with your project, Cosel has the expertise and product range to meet your needs.

Contact us today to explore the best power supply options for your specific applications. Or, why not come see us in person? We’ll be at the Engineering Design Show 2024, ready to showcase the latest in power supply technology.
Need help choosing the right power supply for your application?
Don’t miss out on discovering the solutions that can power your next breakthrough. Let’s start a conversation today!
GET IN TOUCH TODAY – 01929 555700
At Relec Electronics, we are committed to empowering your applications with the right power conversion solutions. Leveraging our extensive knowledge and experience, we guide you through the selection process, ensuring that you have all the information you need to make the best choice for your specific needs.
In the ever-evolving world of power electronics, having a trusted partner like Relec Electronics by your side ensures that you are equipped with the right tools and knowledge to navigate the complexities of power conversion, driving your applications to new heights of performance and reliability.

Let’s make this easy and call us today.
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