Australia
New Zealand
Greece
Surge protection for reliable BACnet MS/TP and RS‑485 network operation
The i‑Vu® Lightning Protection Board (PROT485) protects building automation controllers from electrical surges and transient events, helping ensure stable communication and long‑term reliability of RS‑485/BACnet MS/TP networks.
Network Device
Carrier's ancillary network devices ensure optimum performance for BACnet MS/TP and other EIA-485 networks. These devices install easily and work together to amplify data signals and provide surge protection, bias and termination to any EIA-485 network.
Not required (passive protection device)
Install at each point where network wiring enters or exits a building, or
One unit recommended within 250 ft (76 m) of each controller for maximum protection
Two replaceable 0.5 A time‑lag fuses:
F1: 3AG, 250 VAC, 0.5 A, T
F2: 3AG, 250 VAC, 0.5 A, T
22/24 AWG, single twisted shielded pair, low‑capacitance, CL2P‑rated cable
It protects RS‑485/BACnet MS/TP networks from lightning‑induced surges and electrical transients.
At each location where network wiring enters or exits a building, or within 250 ft of controllers for optimal protection.
Yes. The board includes replaceable 0.5 A time‑lag fuses to restore protection after a surge event.
It is strongly recommended for outdoor wiring, long cable runs, or lightning‑prone environments.
Get directed to our Business Development team to start the authorization process and discuss sales support.
Get specialized help with system sizing, load
calculation analysis, and technical data required for project design.
Request support for warranty claims,
scheduled maintenance, and genuine spare
parts ordering.
For more information : ahi@ahi-carrier.com