Interface & Plug-in Relays

Interface and plug-in relays from Schneider Electric and Siemens isolate and amplify control signals between PLCs, sensors and loads. The range centers on Harmony RXM, RSB, RPM and RSL series with 1 to 4 changeover contacts and contact ratings from 3 A to 16 A. Stoklink ships worldwide from Turkey and quotes project volumes on request.

What's in this range

• Harmony RXM miniature plug-in relays with 2, 3 or 4 C/O contacts.
• Harmony RPM and RSB relays for higher contact current, up to 16 A.
• Harmony RSL slim interface relays for PLC outputs.
• Zelio miniature relays and Siemens 3RQ1 interface relays.
• Phoenix Contact PLC-INTERFACE relay modules.

How to choose

• Coil voltage and type: 24 V DC, 24 V AC or 230 V AC, as the control supply requires.
• Contact count and rating: number of C/O contacts and switched current at the load voltage.
• Load type: resistive loads allow the full rating, inductive and DC loads need derating.
• Socket: confirm the socket part number matches the relay series and pin layout.
• Width: slim interface relays save DIN rail space on dense panels.

FAQ

Do plug-in relays need a separate socket?

Yes. The socket carries the wiring and holds the relay. Sockets are listed in the relay sockets and accessories collection.

Why use an interface relay behind a PLC output?

PLC outputs switch small currents. The relay isolates the PLC and switches the larger or different-voltage load.

Can you ship interface relays outside Turkey?

Stoklink ships worldwide from Turkey, EXW. Lead time depends on distributor stock, and project quantities are quoted on request.