SYMAP® Series

SYMAP® is a flexible microprocessor-based digital protection and control device for use in low-, medium-, and high-voltage power systems.

Because of its integrated protection functions and human-machine interface capabilities, it is an efficient and cost-effective solution for all types of switch gears. With three powerful microprocessors, SYMAP® offers complete protection and control functions for generators, motors (synchronous and asynchronous), transformers, power lines, and distributions. All protection functions can be activated simultaneously, and there are no limits in using all of them at the same time.

With SYMAP®, five main breaker controls can be activated with all the necessary functions, such as display, control and blocking, for optimal breaker management. A small integrated PLC allows individual interlocks of control commands. For flexibility in commissioning and during use, both digital and analog outputs can be used to connect the SYMAP® control unit to main switchboard controls.

Additionally, a variety of serial interfaces with different kinds of data protocols can be used for communication between SYMAP® units and the central control system. For diagnostics and monitoring, SYMAP® has three microprocessors which supervise each other, and providing a watchdog system. Important functions are laid out in a double redundancy combination, operating independently with the second processor. Connected separately, an optional unit for short circuit protection operates parallel to the SYMAP® device and will do so even if the power supply fails.


Basic series expand to include LED indicators, event data recorder, extended board, power management, diesel-, gas engine- and turbine control, optional differential protection

Areas of application

  • Diesel Engines, Gas Engines
  • Turbines


  • SYMAP® BC – Mulitfunctional Protection Relay
  • SYMAP® BC – Mulitfunctional Protection Relay

SYMAP® Y (EC, ECG, F, G, M, T, LD, D)

Essential cost series with power management, diesel- and turbine control

Areas of application

  • Diesel Engines
  • Turbines


  • SYMAP® EC – Engine Control
  • SYMAP® ECG – Engine Control + Generator Protection
  • SYMAP® F – Feeder Protection
  • SYMAP® G – Generator Protection
  • SYMAP® M – Motor Protection
  • SYMAP® T – Transformer Protection
  • SYMAP® LD – Line Differential
  • SYMAP® D – Distance Protection

Extended Boards – CMA

Functionality Extension for SYMAP®

An extended board can be connected to SYMAP®, providing additional input and output channels. The extended board is customized to individual client requirements and can be equipped with a maximum of the following input and output channels:

CMA 216 – Digital extension module with 24 digital Inputs 24VDC and 24 relay outputs 6A/250V

CMA 216/217 – Digital extension module CMA 216 with 6 Pt100 inputs for temperature measurement

CMA 238 – Analog extension module with 8 multi-purpose inputs for 0(4)to 20mA, 0 to 10V, Pt100 sender.

  • 44 digital inputs
  • 32 relay outputs
  • 40 analog inputs – Multi Purpose
  • 4 analog inputs – VDO
  • 24 analog inputs-NiCrNi
  • 20 analog outputs
  • 8 multi purpose inputs

About stuckeGROUP

For more than 50 years, stuckeGROUP has been supplying the marine & offshore as well as the industrial & energy market with development, planning and production for generator protection systems, grid protection systems and multifunctional protection relays for low voltage, medium voltage and high voltage systems for diesel and gas machines.

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