Industrial Relays
Industrial relays are electromechanical relays used plugged into a socket inside a panel, whose changeover (CO) contacts change position when the coil is energized. In machine and plant panels they act as a coupling (interface) between a PLC output and a field device; they drive loads such as contactor coils, solenoid valves and pilot lights. The category includes Siemens coupling relays and their accessories such as the LED module, Finder 46 series miniature industrial relays and Molwex relays; slim relays with a narrow housing and standard relays with 2 and 4 contacts are in separate subcategories. The product data shows 1, 2, 3 and 4 CO contact arrangements, contact currents such as 8 A and 16 A, 8, 11 and 14-pin configurations, and coil voltages such as 24 V DC and 230 V AC. Select the coil voltage and type (AC or DC) according to the control voltage, the number of contacts according to the circuit diagram, the contact current according to the current of the load and whether it is inductive, and the number of pins according to the socket you will use. Because the relay and socket may be sold under different stock codes, verify the set contents on the product page.
Products
- Siemens 3RQ4053-1SG30 Coupling Relay Current Carrying Capacity DC/1mA.6A — Siemens · SKU: 3RQ4053-1SG30 · TRY 5,287.00 · Made to order
- Siemens LZS:RT3A4L24 Interface Relay Relay, Socket, LED Module, — Siemens · SKU: LZS:RT3A4L24 · TRY 1,710.00 · Made to order
- Siemens LZS:RT3A4T30 Coupling Relay — Siemens · SKU: LZS:RT3A4T30 · TRY 1,974.00 · Made to order
- Siemens 3RQ4118-1AF00 Coupling Relay 1C0, Thermal Current 6A — Siemens · SKU: 3RQ4118-1AF00 · TRY 2,609.00 · Made to order
- Siemens LZS:PT5A5T30 Coupling Relay — Siemens · SKU: LZS:PT5A5T30 · TRY 1,780.00 · Made to order
- Siemens LZS:PT3A5R24 Interface Relay Label, including clip mechanism — Siemens · SKU: LZS:PT3A5R24 · TRY 1,651.00 · Made to order
- Siemens 3RQ4050-1SM50 Coupling Relay Current Carrying Capacity DC/1mA.3A — Siemens · SKU: 3RQ4050-1SM50 · TRY 4,928.00 · Made to order
- Siemens 3RQ1200-2EB00 Coupling Relay — Siemens · SKU: 3RQ1200-2EB00 · TRY 10,687.00 · Made to order
- Siemens 3RQ4070-1SB30 Coupling Relay Current Carrying Capacity DC/1mA.6A — Siemens · SKU: 3RQ4070-1SB30 · TRY 5,821.00 · Made to order
- Siemens 3RQ4070-1SG30 Coupling Relay Current Carrying Capacity DC/1mA.6A — Siemens · SKU: 3RQ4070-1SG30 · TRY 6,275.00 · Made to order
- Siemens LZS:PTML0730 LED Module, Red — Siemens · SKU: LZS:PTML0730 · TRY 392.00 · Made to order
- Siemens 3RQ1000-2LB00 Coupling Relay — Siemens · SKU: 3RQ1000-2LB00 · TRY 9,928.00 · Made to order
- Siemens LZS:RT4A4R24 Interface Relay Label, including clip mechanism — Siemens · SKU: LZS:RT4A4R24 · TRY 1,794.00 · Made to order
- Siemens LZS:PT5A5R24 Interface Relay Label, including clip mechanism — Siemens · SKU: LZS:PT5A5R24 · TRY 1,651.00 · Made to order
- Siemens LZS:RT17016 Interface Relay clip for RT relay — Siemens · SKU: LZS:RT17016 · TRY 77.00 · Made to order
- Siemens 3RQ4052-1SM50 Coupling Relay Current Carrying Capacity AC/5mA.3A — Siemens · SKU: 3RQ4052-1SM50 · TRY 7,076.00 · Made to order
- Siemens 3RQ4018-2AM08-0AA0 Coupling Relay 1C0, Thermal current 6A — Siemens · SKU: 3RQ4018-2AM08-0AA0 · TRY 1,915.00 · Made to order
- Siemens LZS:PTML0524 24V AC/DC LED module for Coupling Relay PT/RT — Siemens · SKU: LZS:PTML0524 · TRY 392.00 · Made to order
- Siemens 3RQ4118-1AB00 Coupling Relay 1C0, Thermal Current 6A — Siemens · SKU: 3RQ4118-1AB00 · TRY 2,009.00 · Made to order
- Siemens 3RQ1000-2GB00 Coupling Relay — Siemens · SKU: 3RQ1000-2GB00 · TRY 8,542.00 · Made to order
- Siemens 3RQ4902-0B Clip-On Label, 6x12 mm, white — Siemens · SKU: 3RQ4902-0B · TRY 40.00 · Made to order
- Siemens LZS:RT4A4L24 Interface Relay Relay, Socket, LED Module, — Siemens · SKU: LZS:RT4A4L24 · TRY 1,794.00 · Made to order
- Siemens 3RQ4052-1SM30 Coupling Relay Current Carrying Capacity DC/1mA.6A — Siemens · SKU: 3RQ4052-1SM30 · TRY 2,812.00 · Made to order
- Siemens LZS:RT17040 Interface Relay RT series label — Siemens · SKU: LZS:RT17040 · TRY 68.00 · Made to order
- Siemens 3RQ4038-1AF00 Coupling Relay 1C0, Thermal Current 6A — Siemens · SKU: 3RQ4038-1AF00 · TRY 3,673.00 · Made to order
How to choose Industrial Relays
Industrial relays are electromechanical relays used plugged into a socket inside a panel, whose changeover (CO) contacts change position when the coil is energized. In machine and plant panels they act as a coupling (interface) between a PLC output and a field device; they drive loads such as contactor coils, solenoid valves and pilot lights.
- Separate sensing, motion control, logic processing and operator interface requirements.
- Select signal type, supply voltage, communication protocol and I/O count for the machine network.
- Verify housing size, sensing distance and PNP/NPN output polarity against the PLC input card.
Frequently asked questions
What is Industrial Relays and where is it used?
Industrial relays are electromechanical relays used plugged into a socket inside a panel, whose changeover (CO) contacts change position when the coil is energized. In machine and plant panels they act as a coupling (interface) between a PLC output and a field device; they drive loads such as contactor coils, solenoid valves and pilot lights.
What should I compare when choosing Industrial Relays?
Select the coil voltage and type (AC or DC) according to the control voltage, the number of contacts according to the circuit diagram, the contact current according to the current of the load and whether it is inductive, and the number of pins according to the socket you will use.
Which product groups are available under Industrial Relays?
The current subcategories include Slim Relays, Standard Relays. Open a subcategory to compare its products and technical details.
Industrial Relays Selection Guide: Technical Criteria and Engineering Practice