Line surge protection device for telephone lines
Liquid crystal protection circuit
Liquid fuel ignition apparatus
Liquid fuel supply systems for prime movers
Lithium battery protection circuit
Load actuation circuit with a surge protecting function
Load break switch with built-in ground fault sensing
Load dump protection circuit
Load protecting arrangement
Load protective circuit
Load regulation apparatus
Load shedding relay
Load tap changer system including protective apparatus for...
Local line adapter
Logic driver circuit with output protection
Logic level current and voltage independent restraint system
Long delay acceleration module for an overload relay system
Long-time and short-time overcurrent signal processor for...
Loop fault isolator
Loop restoration scheme for distribution feeders