Hermann ZANDER GmbH & Co. KG
Am Gut Wolf 15
52070 Aachen
Tel: +49 (0)241 910501-0
Fax: +49 (0)241 910501-38

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Safe Coupling Relays from Zander


The SK3D is a classic, 22.5 mm wide safe coupling relay. It has 3 safe relays contacts which, in addition to the actual coupling function, also offer a contact multiplication.

The SK3D is available for DC 24 V, AC 115 V and AC 230 V. With the SK3D safe digital 24 V output signals can be coupled to the periphery, as well as e.g. 230 V signals of pressure switch contacts safely to the control level.


The safe coupling relay MINOS SD1K impresses with its ultra compact form. With a width of just 6.8 mm the SD1K meets all relevant standards for the safe coupling of safety-oriented signals in particular according to IEC 61508, IEC 61511, EN 50156-1 and EN 746-2.

When coupling safe PLC outputs a great number of coupling relays is often needed. This may lead to considerable space problems, which are solved up to now with a lot of money by increasing the installation area.

In comparision with standard coupling relays of 22.5 mm width the ultra compact SD1K requires just a third of the space in the control cabinet.

By considering the SD1K early on during the development or also during retrofit, space and costs can be saved.

Our safe coupling relays are not only for the us in furnaces with continues operation but also meet the common requrements of the respective standards and are type-approved and certified by independant testing agencies, such as TÜV Rheinland.