Protector 485 GEL 890460
Reliably protects the downstream hardware against damage due to an offset on the potential, e. g. in case of a lightning strike. Uninterrupted availability of the communication with the protected device. Quick to fit, as no additional cabling required.
The Protector 485 is a surge arrester for connection DSub connectors on an RS485 interface. In case of offsets on the potential of up to 10 Veff AC (caused, e.g., by earth loops) the electronics are protected and communication is also maintained. As a result data transmission is not interrupted even under very difficult conditions.
Only in case of offsets on the potential of more than 10 Veff AC (caused, e.g., by a lightning strike) is the communication interrupted for the duration of the interference while the electronics are fully protected.
Due to its compact design with a length of 34.6 mm, the Protector 485 is space saving. The Protector 485 is fitted directly to the RS485 interface, preferably on the MotionController GEL 82xx, as an intermediate connector without further cabling. Due to the low series resistance in operation, a terminating resistor can be left in the device protected.
- Burst (as per EN 61000-4-4) 4.4 kV
- Surge (as per EN 61000-4-5) > 1.25 kV
Protection against an offset on the potential
- Up to 50 Veff AC
Protection against damage to the electronics
- Up to 10 Veff AC
Maintenance of the communication
Speed of response in the nanosecond range Series resistance approx. 10 Ohm (to be taken into account on designing the length of the communication cable) Internal circuit designed for high pulse energies, caused by lightning strike
Fields of application
Wind power (onshore, nearshore, offshore) Harsh industrial environment
Technical data, circuit diagram
|Power supply||Passive component|
Burst (according EN 61000-4-4)
Surge (according EN 61000-4-5)
|> 4.4 kV
> 1.25 kV
|Protection class||IP 20|
|Serial interface||RS 485|
|Operating temperature||-40 ºC ... +85 ºC|
|Storage temperature||-40 ºC ... +85 ºC|
|Maximum atmospheric humidity||95%|
|Maximum operating altitude||3000 m|
|Vibration resistance acc. to DIN EN 60068-2-6||20 m/s2, 9 to 50 Hz|
|Dimensions (W x D x H )||34.6 mm x 21.8 mm x 18 mm|
|Weight||< 40 g|