Allen-Bradley 1606-XLBUFFER- Buffer Unit

The Allen-Bradley 1606-XLBUFFER is a buffer module that augments 24V DC control power circuits by providing a hold-up energy source for brief power interruptions, ensuring that critical PLC inputs and peripheral devices remain powered during transient outages. It accepts a 24–28.8 V DC input and delivers a stable buffered output in the 23–27.8 V DC range, capable of supplying up to 20 A and up to 480 W to support load continuity in industrial automation environments. The internal energy storage uses maintenance-free ultra-capacitors rather than a battery, offering long life with minimal maintenance and no risk of electrolyte leakage, and it is designed as a supplementary device for 1606-series switched-mode power supplies. Typical applications include hold-up for 24V DC control circuits powering Allen-Bradley PLCs, relays, sensors, and I/O modules in machine control cabinets, where brief outages could disrupt production, with the buffer module seamlessly bridging short mains dips and ensuring safe shutdown or continued operation.