RCD type LF2 is designed to provide circuit protection for
telecom applications, such as line feed, ADSL, HDSL, and
switching networks, as well as snubber circuits, switching
regulators, power faults, etc. The LF2 is a combination power
resistor and isolated thermal fuse housed in a ceramic case.
The combination enables the device to withstand short-time
overloads (various lightning surges, AC power crosses, inrush
currents, and ESD pulses), yet open safely under extended
overload conditions. The all-welded internal construction
combined with highest grade materials ensures utmost
performance and reliability. For even greater protection under
power cross conditions, as required by TR1089, specify LF2A.