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Mean Well DBUF20-24 DIN Rail Type Buffer Module 20A 24V

buffering with capacitorsupport parallel connection to extend buffering time

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DBUF20-24

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The DBUF20 is a Mean Well. power converter. with IEC62368-1, UL62368-1 approvals.

Key Features

✓ Protections: Short circuit / Over voltage / Reverse polarity
✓ Safety approvals: IEC62368-1,UL62368-1
✓ 3 years warranty

Frequently Asked Questions

What is the Mean Well DBUF20-24 used for?

The DBUF20-24 is a 24V DIN rail buffer module designed to help maintain DC output during short power interruptions or voltage dips. It is intended for 24Vdc control and industrial power systems that need brief ride-through support at up to 20A.

How is the DBUF20-24 different from a battery-based backup module?

This model uses electrolytic capacitors for buffering instead of lead acid batteries. That makes it a good fit for applications where short buffering time is needed without using a battery-based design.

What are the main electrical ratings of the DBUF20-24?

The DBUF20-24 is built for 24Vdc systems and provides 20A output current. Its charging voltage range is 23 to 30Vdc, charging current is up to 900mA, and ripple and noise is rated at 200mVp-p.

How long can the DBUF20-24 provide buffering?

Mean Well specifies a typical buffering time of 350ms at 22Vdc and 20A. Actual performance depends on the load current and operating conditions, but this figure gives a model-specific reference point for short-duration hold-up support.

Can the DBUF20-24 be used in demanding industrial temperatures?

Yes, this module has a wide operating temperature range of -25°C to +75°C, with derating reference noted by the manufacturer. It is also cooled by free air convection, which suits DIN rail cabinet environments where passive cooling is preferred.

Is the DBUF20-24 compatible with expanding buffering time?

Yes, Mean Well states that this model supports parallel connection to extend buffering time. It is also designed with selectable buffer mode and LED status indication, which helps when specifying it for systems that need configurable short-term DC support.

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Mean Well DBUF20-24 DIN Rail Type Buffer Module 20A 24V

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Mean Well DBUF20-24 DIN Rail Type Buffer Module 20A 24V

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