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Alpha Auxiliary, Trip & Supervision Relays

The Alpha range is a new generation of electro-mechanical relays specifically designed for high voltage protection and control applications.

High performance and reliability remains paramount while production lead times have been reduced.

A wide voltage operating range and user selectable low or high burden tripping relay operation reduces the number of model variations.

The Alpha range is packaged in a draw out case system and can be either flush panel or rack mounted.

Application of the Alpha multi-contact high-speed trip relays ensures fast operation of less than 8 ms. The unique patented design and topology ensures minimal contact bounce.


  • Rugged modular construction
  • Auxiliary relay single and dual element versions
  • High speed tripping relay version
  • Supervision relay versions
  • Pilot wire send and receive versions
  • 5 and 12 contacts available
  • Self reset, hand reset and hand/electrical reset versions
  • High visibility electro-mechanical flag indication
  • Rated operating and reset voltage available for 30/32, 48/50, 110, 125, 220, 240 or 250 Volts DC nominal auxiliary supplies
  • Wide voltage operating range
  • Rack or flush mounting
  • Compact size E2 draw out case
  • M4 screw terminals
  • Fine silver Contacts designed and manufactured to ensure low resistance and high reliability
  • Contacts with magnetic blowouts available with enhanced DC break capabilities for inductive loads
  • Optional gold plated contacts suitable for low currents
  • Optional coil operation LED
  • Optional trip counter
  • Optional electrical reset isolation switch
  • Simple to specify and order
  • Made in Australia



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©1998-2014 Relay Monitoring Systems Pty. Ltd.      ACN 052 484 483     ABN 76 052 484 483

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