LOVATO Electric GmbH

Manufacturer
Germany
Product inquiry

ACAE
ACAE/LOVAG
ISO 9001:2015
ISO 14001:2015
OHSAS 18001:2007

Manufacturer
Germany
Product inquiry

ACAE
ACAE/LOVAG
ISO 9001:2015

Surge Arresters by LOVATO Electric GmbH

The surge arresters commonly defined as SPDs (Surge Protection Devices), are devices designed to protect electric systems and equipment against transient and impulse overvoltages such as those caused by lightning strikes and by electric switching. Their function is to divert the discharge or impulse current generated by an overvoltage to earth/ground, thereby protecting the equipment downstream.

SPDs are installed in parallel with the electric line to be protected. At the mains rated voltage, they are comparable to an open circuit and have a high impedance at their ends. In the presence of an overvoltage, this impedance falls to very low values, closing the circuit to earth/ground. Once the overvoltage has ended, their impedance rises again rapidly to the initial value (very high), returning to open loop conditions.

The SA1B and SA0B (monoblock) type protects against direct and indirect lightning strikes as well as induced overvoltage conditions. It can be installed in areas with a high risk of direct lightning strikes, inside main distribution boards or nearby sub-distribution boards. With the SA0 plug-in cartridge type, the same features are available with the advantage of only having to replace the protection cartridge once the SPD blows.