Multi IO Extension Switch 590

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The Multi IO Extension 590 serves as a power-saving alternative to commercial standard coupling relays. The coupling relay is controlled as a mono-stable relay, but uses a bi-stable relay internally, thus reducing the holding current by up to 95%.

The Multi IO Extension 590 has an integrated fuse to protect high-quality equipment.

Data sheet


Mechanical data

  • Housing: plastic
  • DIN rail mounted device, width: 1 modules (18 mm)
  • Weigth: approx 50 g

Indicator and fuse

  • LED (green) show relay state
  • Glass fuse 5x20mm, 10 A


  • Screw terminal (2 poles) for 24 V⎓ input
  • Screw terminal (3 poles) for 230 V∿ output


  • Input voltage (signal) 24 V⎓
  • “Holding current” < 2 mA


  • Fuse 10 A
  • Relay type: 250 V∿ / 16 A, bi-stable
    Depending on load type (capacitive or inductive) the switching power can be reduced significantly.