Converter 120W 16.8~33.6V-12V 10A DDR-120B-12

Universal DC/DC converter for demanding applications

The DDR-120B-12 converter is a robust and reliable power source, designed to operate in harsh industrial and transportation conditions. The device converts the input voltage from 16.8~33.6V DC to a stable output voltage of 12V DC, delivering up to 120W of power. Its compact dimensions and DIN rail mounting capability make it an ideal solution where space is limited and reliability is key.

Safety and compliance with standards

The converter is designed with safety in mind and meets stringent industry standards, including EN50155 (railway standard) and EN45545-2 (fire safety in rail transport). Protections against short circuit, overload, overvoltage, and reverse polarity protect both the converter itself and the devices connected to it. Input/output isolation at 4 kVdc provides additional safety.

Design and application

Thanks to the wide input voltage range, the converter finds application in many power systems, such as:

• Railway transport systems (powering on-board equipment, control systems)
• Industrial automation systems
• Mobile devices
• Monitoring and alarm systems
• Applications requiring stable 12V DC power

Cooling is achieved by free air convection, eliminating the need for additional fans and reducing the risk of failure. The ability to momentarily overload to 150% allows for trouble-free starting of devices with high inrush current. The lack of required minimum load is another advantage – the converter operates stably even with low power consumption. Output voltage adjustment allows for precise adjustment of operating parameters to specific application requirements. The housing width of only 32 mm facilitates integration of the converter in tight spaces.