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WRU-RAL Series

Protection relays and earth leakage reclosing, Type A ultra-immunised with built-in transformer




  • Electronic differential protection relay with automatic reclosing with built-in 28 mm transformer, constituting one unit.
  • Superimmunized Type A , with high-frequency current filter and high insulation. Measurement in true root mean square (TRMS) value
  • Display with leds and back-lit display:
    • Differential protection/reclosing settings
    • protection trigger current.
    • number of reclosures
    • protection status messages, etc.
  • Unit with three output contact relays one switched and two simple relays, all programmable. The main relay provides the protection associated with the contactor, one is for the pre-alarm and the other for locking once the maximum number of reclosures is reached.
  • There is a voltage input for external triggering and reclosing
  • Fitting: DIN 46277 (EN-50022) profile
  • Reduced three-module size.
  • Connection by pluggable terminals



Vial Sant Jordi s/n, 08232
Viladecavalls (Barcelona) Spain
Tel: (+34) 93 745 29 00
Fax (+34) 93 745 29 14

Technical Support

Tel. (+34) 93 745 29 19


Testing and Calibration

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