KL9550 - introduction

KL9550 - introduction 1:
KL9550

Surge filter terminals for field supply and K-Bus supply

The KL9550 surge filter terminal contains overvoltage filters for the field supply (power contacts) and the K-Bus supply (Bus Coupler). The filters protect the components from line-bound surge voltages that can occur due to high-energy disturbance variables such as switching surges at inductive consumers or lightning strikes at the supply lines.

LED displays

LED

Meaning

Power system (green)

on

K-Bus supply voltage present

Power field (green)

on

Field supply voltage present