Surge Protection Barrier

FS-LB-I

Function

This Surge Protection Barrier limits induced transients of different origin (e. g. lightning stroke, switching impulse, etc.). This is achieved by

diverting the transient current to ground and limiting the signal line voltage to a safe level for the duration of the surge.

This barrier provides 85 V line-to-line and 500 V line-to-ground clamping voltage for the protected instruments. It also protects instruments that

have less than 500 V isolation-to-ground.

It is installed in an available conduit or cable gland opening like those found on most process transmitters.

For additional information, refer to the manual and www.pepperl-fuchs.com.

Note: Surge Protection Barriers must always be connected to a solid and effective ground and be at the same equipotential level as the

instrument it is protecting. The ground system must comply with all applicable regulations.

Connection

rd

bk

Zone 1, 2

Div. 1, 2

GND gn/ye

Technical Data

General specifications

Number of protected signal lines

1

Functional safety related parameters

Safety Integrity Level (SIL)

SIL 3

Supply

Rated voltage

≤ 48 V

Rated current

≤ 250 mA

Leakage current

≤ 5 µA

On-state voltage

≤ 85 V

1

Germany: +49 621 776 2222

Pepperl+Fuchs Group

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

USA: +1 330 486 0002

Singapore: +65 6779 9091

www.pepperl-fuchs.com

pa-info@us.pepperl-fuchs.com

pa-info@sg.pepperl-fuchs.com

pa-info@de.pepperl-fuchs.com