Buffer module for DIN rail, DBUF 24V/40A DBUF40-24

Buffer module for power supplies – stability and power continuity

The DBUF40-24 buffer module is a reliable solution providing uninterrupted power to critical devices. It utilizes advanced electrolytic capacitor technology, eliminating the need for traditional, maintenance-intensive lead-acid batteries. The device is designed to work with regulated 24V DC power supplies, offering an additional layer of protection against voltage drops. This is an ideal solution for both professional security and automation system installers, as well as end-users looking for reliable power for their devices.

Construction and functionality

The DBUF40-24 is mounted on a DIN rail, making it easy to integrate with existing installations. It has a wide input voltage range (22-29 V DC) and provides a stable output voltage. The module offers two operating modes: dynamic and constant, adapting to the specific requirements of the application. In dynamic mode, it reacts faster to short-term voltage drops, while in constant mode it provides a longer power reserve. Thanks to the possibility of parallel connection of several modules, the buffering time can be extended as needed. LED signaling informs about the device's operating status – readiness, charging or buffering.

Key features and benefits

• Maintenance-free technology: the use of electrolytic capacitors eliminates the need for regular replacement and maintenance, unlike traditional batteries.
• Two operating modes: dynamic and constant allow for optimal adaptation to the load characteristics and application requirements.
• Possibility of parallel connection: allows increasing the buffering time by connecting several modules.
• Wide input voltage range: ensures compatibility with various power sources (22-29 V DC).
• High efficiency: minimizes energy losses and ensures efficient resource utilization.
• Protections: overvoltage, overload and short-circuit protection guarantees safe operation of the device and protects the connected load.
• LED signaling: intuitive signaling of the operating status facilitates diagnostics and system monitoring.
• DIN rail mounting: facilitates installation and integration with existing systems.
• Long buffering time: up to 62 seconds (depending on the load), which provides sufficient time to safely complete work or switch to an alternative power source.

The input voltage is in the range of 23-30 V DC, and the output voltage is 22-29 V DC. The module can deliver a maximum output current of 40 A. The charging time is approximately 25 seconds (typ.). The buffering time varies depending on the load: at 40A it is about 250 ms (typ.) / 160 ms (min.), at 20A – 500 ms (typ.) / 320 ms (min.), and at 0.1A – even up to 62 s (typ.) / 42 s (min.).

The DBUF40-24 module is an investment in the stability and reliability of the power system – crucial for protecting valuable devices and ensuring continuity of operation in critical situations.