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PLC-INTERFACE relays – innovations in switching
Qualified for your application

Applications

Discover the wide range of applications for our relays

We are here for you – around the globe

With over 50 subsidiaries and more than 30 agencies around the world, we are always close by. You will therefore receive competent and individual advice for your application, fast and punctual delivery, and high-quality relay modules suitable for your application. With our engineering and manufacturing expertise and the high level of vertical integration, we guarantee products that meet your quality requirements. We will also support you after the purchase with comprehensive after-sales services.

There is always something to switch Discover our relays in use worldwide

Interactive Image Map: Places of application of PLC-INTERFACE with the examples of wind, shipbuilding, machine building, logistics, water and wastewater, the process industry, and infrastructure

Railway technology

Relays and solid-state relay modules for railway applications. ▪ In accordance with DIN EN 50155 ▪ Also SSR in accordance with EN 61373 ▪ Up to temperature class TX

Shipbuilding

Highly compact relay modules with DNV approval (including comprehensive accessories). PLC-INTERFACE Location Classes: ▪ Temperature D ▪ Humidity A ▪ Vibration B/C ▪ EMC B

Renewable energies

Space-saving relay modules for onshore and offshore applications. ▪ Long service life with hybrid technology ▪ Smooth switching through the combination of semiconductor and relay

Logistics

Space-saving relays and solid-state relay modules for sorting and braking applications with high clock rates. ▪ Switching current up to 10 A ▪ Clock rates up to 300 Hz

Process industry

Highly compact relay modules with ATEX, IECEx, and UL approval for zone 2 applications. Additional versions with increased immunity to interference for long control lines. ▪ Switching currents up to 10 A and multiple input voltages ▪ High ambient temperature range of +70°C ▪ Resistant to interference on signal lines ▪ High drop-out voltages for unambiguous switching and signal states ▪ Relay modules with Push-in and screw connection

Machine building and systems manufacturing

Comprehensive product range with special types such as relay modules. ▪ Safe feedback through force-guided contacts in accordance with DIN EN 61810-3 Type A or innovative hybrid technology ▪ High machine and system availability

Infrastructure

Relay modules for high inrush currents, e.g., for road and tunnel lighting systems. ▪ Maximum inrush currents up to 800 A for AC and DC loads ▪ High ambient temperature range ▪ Relay modules with Push-in and screw connection

Water and wastewater

Relays and solid-state modules designed for universal use. ▪ Overall width of 6.2 mm for space-saving use ▪ High system availability with tool-free relay replacement

Buildings

Programmable logic relay system with Modbus/RTU interface and highly compact relay modules for high inrush currents for switching LED lamps. ▪ Tests in accordance with EN 60335 (heat pumps) ▪ Switching currents up to 800 A peak

Power-to-X applications

Production of green hydrogen by means of wind, solar, and hydro power. Electronic versions, e.g., for long control lines or for Ex relay modules approved for use in zone 2, support you in the realization of modern systems.

Power-to-X applications

Gases and liquids, such as hydrogen and methanol, are generated from renewable electrical energy using electrolysis and transported as carbon-neutral buffers. As e-fuels, they are used in the mobility sector, for heat generation, and in industry. If necessary, they can also be used for power recovery, e.g., in combined heat and power plants.

In modern power-to-X applications, signals must be transmitted easily, flexibly, and reliably from the control level via the interface level into the field. This also applies to the signal path from the field to the control level.

Relays for switching loads and signals are indispensable core components for power-to-X technologies for sector coupling and are thus an important part of the universal connection between sectors.

PLC-INTERFACE – ready for any application

Certificates, approvals, and confirmations from accredited testing institutes are essential for the worldwide use of our relays. With PLC-INTERFACE, you can be sure of easy and safe use in almost any application. We offer a wide range of these documents in our product range for use in current and future applications.

	Regional specific confirmations	Approvals	Third-party certificates
1	EN 50155 (railway)	UL	CB report in accordance with IEC 60947-5-1
2	EN 50121 (railway)	DNV	Confirmation of conformance with ATEX Directive (IBExU)
3	China RoHS	IECEx
4	UAE RoHS	UL HazLoc (Class I, Zone 2)
5	CMIM (Morocco)	CCC
6	UKCA	CCC Ex
7	CE	KCs
8	EAC	Railway approvals
9	EAC Ex