They are used mainly for primary protection of single and three-phase networks at the main electrical panel. They provide common-mode protection and are available in one-phase, single-phase, 3-phase and 3-phase+Neutral. This SPD is based on association of high energy varistors equipped with thermal disconnector and failure indicator, to comply with standards. The DS70R surge protectors are designed to be used in a multipolar configuration to protect single-phase, 3-phase or 3-phase+N AC networks. Each pole of the SPD is connected between Line(s) and PE and Neutral and PE.
Version with a remote signaling for disconnection indication is also available (DS7*RS). The DS70R is available for the main values of AC voltages. The DS70R is DIN rail compatible and is built with a plug-in module (DSM70R-xxx) and a fixed base, which allows an easy and fast maintenance.
ELECTRICAL PROPERTIES
MECHANICAL PROPERTIES
DISCONNECTORS
STANDARDS
DS72R-400 Type 2 AC surge protector single-phase is connected in parallel on the AC network and must be equipped with external fuses for short-circuit current protection
Further information can be found in IEC 61643-12 standard (selection and application principles for low voltage SPD).