Cosel DHS250B12 DC/DC Converter 12V DC 21A 400V/200V Input 252W PCB Mount -40 to 100°C

The Cosel DHS250B12 is an industrial-grade DC/DC converter module engineered to deliver a regulated 12V DC output at high current, suitable for demanding telecommunications, industrial, and instrumentation power applications. It supports up to 21A continuous output and provides a high maximum power rating of 252W, making it ideal for powering dense board-level systems.

This converter is designed to accept a wide DC input voltage range from 200V to 400V, offering exceptional flexibility for various source configurations. Its compact "brick size" form factor allows direct mounting to a PCB, minimizing layout space while supporting high-density system integration. The DHS250B12 supports an output voltage adjustment range from 7.2V to 13.2V, allowing for fine-tuned voltage regulation to match connected loads or distribution requirements.

Reliability is a key aspect of this model. It achieves 88% efficiency, helping reduce system losses and thermal management requirements. With an operational temperature range of -40°C to 100°C, it withstands challenging environments typical in industrial enclosures, remote comms installations, or harsh field conditions.

Safety and performance features include a 3kV AC isolation voltage to protect against input-output transients, limitation of ripple and noise to 200mV for sensitive downstream electronics, and comprehensive onboard protections such as thermal shutdown, overcurrent, and overvoltage cut-off. The module is constructed without aluminium or tantalum electrolytic capacitors, which contributes to its long operating life and high reliability profile. It also provides remote ON/OFF and remote sensing capabilities for advanced system monitoring and integration, supporting robust remote control or fault management routines in modern power architectures.

The Cosel DHS250B12 is engineered in accordance with key industry compliance standards, including CE, UL, cUL, CSA, EN, RoHS, and TUV approvals (as per the product documentation), ensuring safe deployment in regulated markets worldwide.

Typical use cases include high-reliability telecom base stations, industrial machine control equipment, professional instrumentation racks, and compact distributed power platforms requiring stable, protected DC output at substantial current levels. With a weight of only 100g and dimensions of 61mm x 58.4mm x 12.7mm, the converter enables ease of design in dense system builds.

Explore more DC/DC converter solutions in the DC Converter category to match your specific voltage and system needs, or browse additional Cosel modules for board-level and distributed power applications at EnvMart.