Page 574 - Din prodcuts 2020

5/130 ELECTRICAL INSTALL ATION SOLUTIONS FOR BUILDINGS 2CHC 420 001 C0201

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Protection and safety
Data & signal protection
OVR RS485, RS485Q & SL RS485 Series

5

Combined Category D, C, B tested protector (to BS EN 61643) specifically
designed for RS 485 and Fieldbus applications, such as Profibus DP.
For use at boundaries up to LPZ 0 to protect against flashover (typically the
service entrance location) through to LPZ 3. Available as standard OVR RS485
format, or compact OVR RS485Q and Slim Line OVR SL RS485 versions for
installations where a high number of lines require protection.

Features & benefits
• Very low let-through voltage (enhanced protection to • OVR RS485 can be flat mounted on base or side
IEC/BS EN 62305) between all lines - Full Mode protection • OVR RS485 and OVR RS485Q have colour coded terminals
• Full Mode design capable of handling partial lightning for quick and easy installation check
currents as well as allowing continual operation of • OVR SL RS485 has ultra slim 7 mm width ideal for compact
protected equipment protection of large numbers of lines
• Repeated protection in lightning intense environments (e.g. process control installations)
• 45 MHz bandwidth greatly exceeds 12 Mbps maximum • OVR SL RS485 includes two stage removable protection
speeds module with simple quick release mechanism allowing
• Low in-line resistance minimizes reductions in signal partial removal for easy line commissioning and
strength maintenance as well as full removal for protection
• Suitable for earthed or isolated screen systems replacement
• Built-in DIN rail foot for simple mounting to top hat DIN rails • OVR SL RS485 includes optional LED status indication
• Convenient earthing through DIN foot and/or earth • Add L suffix to part number - i.e. OVR SL RS485L
terminal
Accessories
Application Replacement module for OVR SL RS485: If protectors cannot be incorporated
Connect in series with the signal line either near where it OVR SLRS485/M within an existing panel or enclosure,
enters or leaves the building or close to the equipment being Standard module replacement OVR WBX enclosures are available
OVR SLRS485/B
for up to 4, 8, 16 or 32 protectors
protected ensuring it is very close to the system’s earth star Base replacement and their associated OVR CME kit.
point. Install protectors either within an existing Combined Mounting/Earthing kits for Weatherproof enclosure:
cabinet/cubicle or in a separate enclosure. OVR RS485: OVR WBX SLQ (OVR SL RS485 and
OVR CME 4 For up to 4 x OVR RS485 OVR RS485Q)
OVR CME 8 For up to 8 x OVR RS485
OVR CME 16 For up to 16 x OVR RS485
OVR CME 32 For up to 32 x OVR RS485
OVR RS485 installed in series OVR SL RS485 installed in series OVR RS485Q installed in series (in-line)

DIRTY CLEAN LINE CLEAN DIRTY CLEAN
LINE Lightning Barrier CLEAN
Nominal voltage 30V
Max working voltage, U c 36.7V
Current rating 750mA 1.0Ω
In-line resistance
1 Max surge current 20kA 63V 3
Let-through voltage, U p
From To S Furse Wilford Road, S
Nottingham,
NG2 1EB, UK
line equipment
Earth 2 4
From To
line Earth equipment
To equipment
From line To equipment
From line
Earth
Earth
NOTE: The OVR SL ‘Slim Line’ Series is also available for protection of 3-wire and RTD applications (OVR SL/3W & OVR SL RTD).
The OVR SL X Series has approvals for use in hazardous areas.