Detail Reyrolle 7PG1522, TR 221 High Speed Tripping
Siemens Protection Devices Limited 3 Type TR relays are a range of multi-contact attracted armature relays designed to both IEC 255-5 and to BS142. A wide range of models is available to meet the requirements of the electric supply industry. High speed, positive action Can be supplied in modular and drawout type case Robust design for a long, reliable service life
