The LPC 11550-1200 is a two terminal, bipolar lightning and surge protective device (SPD) for protection of electrical and electronic equipment against lightning and surge conditions appearing on DC power line systems.  Nominal operating voltage 1000 VDC; maximum continuous operating voltage 1200 VDC.

Model LPC 11550 series DC power arresters are designed to protect equipment against electrical transients caused by lightning, induction, switching surges, EMP, and any other overvoltages of short duration. 

Two or more may be placed in parallel for higher surge current capability.  May be connected plus to minus, or plus to ground, or minus to ground.

Response is less than a nanosecond.  It restores itself instantly, and is automatically ready for the next operation.  There is no power follow current, no voltage dip, and no power interruption.

The LPC 11911-124 is a two terminal lightning and surge protective device for protection of electrical and electronic equipment against surges and overvoltage conditions appearing on the “plus” and “minus” lines of the power system.  Maximum continuous operating voltage is 1000 VDC.

Restoration is automatic at the instant the voltage reduces to the normal operating voltage.  There is no follow current, no power voltage dip, no power interruption.  With the occurrence of a destructive surge the SPD is removed from the circuit by a special fuse wire (provided with the SPD).  The two terminals are threaded studs (1/4-20 thread).  Either terminal may be connected to the “plus” or “minus” bus.

For a sound and realistic installation a multiplicity of fused parallel SPD’s is suggested.  This permits the assembly to have uninterrupted continuation of protection with the remaining SPD’s.