Technical Information & Details for the MEAN WELL DBUF40-24 Buffer Module
- Output Current: 40 A (Max)
- Operating Voltage: 24 V DC
- Buffering Time: 250ms @ 22Vdc/40A (Typ.)
- Charging Current: 900 mA (Max)
- Input Voltage Range: 23 – 30 V DC (Charging Voltage)
- Efficiency/Standby Consumption: < 100 mA
- Ripple & Noise: ≤ 350 mVp-p
- Charging Time: 25s (Typ.) / 35s (Max)
- Buffer Mode Selection: Fixed mode (22Vdc) or Dynamic mode (Vin-1Vdc)
- Operating Temperature: −25 °C to +75 °C
- Cooling: Free air convection
- Protection Functions: Over voltage, Over load, Short circuit, Reverse polarity
- Overvoltage Category: OVC II
- Isolation Voltage: 2.2 KV DC (IP/OP-FG)
- Dimensions (H x B x T): 125.2 mm x 63 mm x 114.9 mm
- Weight: 1.062 kg
- Safety & EMC Certificates: UL62368-1, IEC62368-1, CE, UKCA, EAC
- LED Status Display: Status Indicator (Charged, Charging, Discharging)
- Manufacturer Warranty: 3 Years
Information about the MEAN WELL DBUF40-24
The MEAN WELL DBUF40-24 is a professional-grade DIN rail buffer module designed to provide reliable energy storage and power backup for 24V DC regulated systems. Unlike traditional UPS systems that rely on lead-acid batteries, this module utilizes maintenance-free electrolytic capacitors. This unique characteristic ensures a significantly longer functional lifespan and eliminates the need for periodic battery replacements, making it an exceptionally cost-effective and eco-friendly solution for semiconductor fabrication, factory automation, and industrial control systems. It provides a critical buffering time of 250ms at full 40A load, allowing systems to bridge short-term power dips or execute controlled shutdowns during mains failure.
One of the standout strengths of the DBUF40-24 is its versatile operational flexibility, featuring a selectable buffer mode switch that allows users to choose between a Fixed 22Vdc threshold or a Dynamic Vin-1Vdc mode for more sensitive voltage tracking. The unit supports parallel connection, enabling engineers to scale the output ampacity or extend the hold-up time according to specific application needs. Integrated comprehensive protection mechanisms, such as internal MOSFET-based reverse polarity protection and short-circuit safeguards, ensure the longevity of both the module and the connected load. With its wide operating temperature range and robust metal housing, it is a superior choice for demanding electromechanical apparatus and network infrastructure.