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Product function

The device limits induced transients of different causes, e. g. lightning or switching operations. The limitation is achieved by diverting the current to earth and limiting the signal loop voltage during the duration of the overvoltage pulse. The device is HART transparent. The device is mounted on a 35 mm DIN mounting rail according to EN 60715. Note: Always connect the device to high-quality ground connections. The device must have the same potential as the devices it protects. Install the ground system in accordance with the applicable regulations.

Product features


Mounting on DIN mounting rail

For intrinsically safe or non-intrinsically safe 30 V applications

Protects field or control circuit inputs

Max. surge current (8/20 µs) 20 kA

Uninterruptable operation (auto reset)

Up to SIL 3 acc. to IEC/EN 61508

Modularity: one-piece

Number of protected signal lines: 2

Topology: grounded

Safety Integrity Level (SIL): SIL 3

Nominal voltage: 24 V DC

Nominal discharge current (8/20 µs): 5 kA per line (10x)

Application area

Industrial automation



K-LB-1.30G Manual.pdf