MRA1 Trip circuit resp. control circuit supervision

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Documentation (Brochures & Manuals)

General HighTECH Line User Manual

The MRA1 relay of the HighTECH Line is used to supervise the tripping circuit of protective devices taking into consideration the following protective criteria:

  • supervision of the auxiliary voltage for the tripping circuit and for the supply of protective devices

  • supervision of the tripping circuit with regard to cable break

  • supervision of the mechanical functions of the circuit breaker

Benefits and Key Features

  • 19“ racks – fully withdrawable

  • Door mounting – withdrawable and sealable

  • Panel mounting – fully withdrawable

  • Fault / disturbance recorder

  • Intuitive HMI

  • Display (of primary values)

  • Easy setting software – Smart view

  • Compact form factor


  • Interconnection of renewable energies (DER – distributed energy resources) to the public grid.

  • Supervision of the trip circuit.

Inputs and Outputs
Binary inputs 1
Output relays 2
Supervision ANSI
Trip circuit resp. control circuit supervision 74TC
Mounting Type
Housing is withdrawable
Housing suitable for door mounting
Housing suitable for mounting plate

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