Advantech BB-485HESP

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Advantech BB-485HESP

RS-485 Surge Protector



These three-stage surge protectors meet IEEE 1000-4-5: 1995 and IEEE C62.41-1991 recognized standards for premium surge protectors. It protects against lightning strikes, power surges, and other types of voltage disturbances with three stages of protection for each supported line: a gas discharge tube followed by a series resistor and finally a Transient Voltage Suppresser (TVS). Three RS-422/485 signals on terminal blocks are supported with a clamping voltage of approximately 6.8 Volts.

These surge protectors housed in a tough metal, panel mount case with a protected signal ground connection and dedicated chassis ground lug.In order to work properly, it is important to have a good connection between the #10 screws and a solid earth ground. The BB-485HESP provides two terminal posts and two metal mounting brackets to provide a good ground connection.


Further Information

Terminal Block

RS-232 RS-485

Temperature (Storage)
-40~85°C (40~185 °F)

0 ~ 95%, non-condensing

Temperature (Operating)
0 ~ 70° C (32 ~ 158° F)


PDF description Advantech BB-485HESP Datasheet (363.0 kB)

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