The DS440 Type 2 surge protectors are compact devices designed to protect 3-phase+N networks at the main switchboard. They provide a common or common/differential mode protection. This SPD is based on high energy varistor equipped with thermal disconnectors and failure indicator to comply with standards. The DS440 is DIN rail compatible and is built with a plug-in module and fixed base, which allows an easy and fast maintenance.
ELECTRICAL PROPERTIES
MECHANICAL PROPERTIES
NORMS
DECONNECTOR
DS440-280 Type 2 AC surge protector - 3-phase+N are 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).