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OnBuy.com£145.09Visit shop Paxton 857 Series 12Vdc 2 Amp Boxed Power Supply (Plastic) 5056546901016
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The Paxton 857 power supply is designed for professional installers and technicians who require a reliable, regulated 12VDC power source for security and access control systems. Its primary benefit is the inclusion of integrated backup battery support, which ensures your systems remain operational during a mains power failure. However, users should note that the unit requires a separate backup battery to utilize this feature, as one is not included in the enclosure.
| Model Part Number | 857 |
|---|---|
| Brand | Paxton |
The power supply provides a constant output of 2 Amps at 12VDC.
No, the enclosure is designed to house a battery, but the battery itself must be purchased separately.
While it is optimized for Paxton systems, it can power any 12VDC device that requires up to 2 Amps of steady current.
Standard electrical screwdrivers and wire strippers are sufficient for installation.
It should be mounted in a clean, dry, and indoor environment, ideally inside an equipment cupboard or a secure server room.
Check the mains AC input connection and verify that the internal fuse has not tripped.
Verify that the backup battery is properly connected, fully charged, and has not reached the end of its service life.
Ensure the enclosure ventilation is not obstructed and verify that the total load does not exceed the 2 Amp capacity.
To set up the Paxton 857, ensure the enclosure is mounted to a dry, vertical surface using appropriate hardware. Wiring should be handled by a qualified technician, following standard industry practices for low-voltage power distribution. Ensure the polarity is checked before connecting any downstream access control devices to avoid short-circuiting the output. For care, perform an annual inspection of the internal battery connections and check for dust accumulation within the enclosure. Keep the ventilation slots clear to maintain optimal operating temperatures for the internal transformer.
