Relays & Signal Conditioning

We stock a large choice of relay products for a wide variety of applications. Within our range, you will find products such as latching and non-latching relays, solid state relays, interface relays and reed relays. All from trusted brands such as our own RS PRO brand, Omron, Finder, TE Connectivity, Panasonic, Phoenix Contact and more.

What is a Relay?

Relays are a type of switch that is operated electronically to turn on or off current within an electric circuit. Relays operate similar to a typical light switch, where power is switched on and off when the switch lever is moved, the main difference is that a relay is operated by an electrical circuit rather than manually pressed.

Relays have many different uses and are often utilised in situations where isolation is necessary or when a circuit needs to be controlled with a low-power signal. There are also specialised types of relay that are used for very high power applications, these are referred to as contactors.

Types of Relay

  • Electromechanical Relay (EMR): An electromechanical relay uses a physical moving arm, triggered by a voltage applied to the relay coil, this arm connects contacts within the output component of the relay. The movement of the arm allows an electrical circuit to be completed, allowing current to flow to the connected equipment. The physical components within the relays commonly make a "click" sound, which can be used as an audible operation indicator.
  • Solid State Relay (SSR): Solid state relays provide a similar function to an EMR but these do not contain any moving components, increasing long-term reliability. SSR's feature semiconductor switching elements, typically thyristors, triacs and diodes that transmits and energises the output signal. When activated, the input signal acts like a switch that allows a high-voltage signal to pass through the SSRs output components.
Relay Accessories
Relay Accessories

Relays
Relays

Signal Conditioners & Isolators
Signal Conditioners & Isolators

18796 Products showing for Relays & Signal Conditioning

1 of 940
In Stock
Phoenix Contact MINI MCR-2-UNI-UI-2UI Series Signal Conditioner, Voltage Input, Voltage Output, 0V dc, 30 V dc Supply
  • RS Stock No. 785-7787
  • Mfr. Part No. 2902958
Subtotal (1 unit)
Kr. 1 110,38(exc. VAT)
Kr. 1 110,38/unit
In Stock
Schneider Electric Harmony Relay RXG Series Interface Relay, DIN Rail, 24V dc Coil, DPDT
  • RS Stock No. 203-5194
  • Mfr. Part No. RXG22BDPV
Subtotal (1 unit)
Kr. 220,11(exc. VAT)
Kr. 220,11/unit
In Stock
Siemens 3SK1, 24V ac/dc Safety Relay, 4 Safety Contacts
  • RS Stock No. 784-5780
  • Mfr. Part No. 3SK1111-1AB30
Subtotal (1 unit)
Kr. 3 859,17(exc. VAT)
Kr. 3 859,17/unit
In Stock
Phoenix Contact RIF-0-RPT-24DC/21 Series Interface Relay, DIN Rail, 24V dc Coil, SPDT
  • RS Stock No. 794-3771
  • Mfr. Part No. 2903370
Subtotal (1 unit)
Kr. 117,28(exc. VAT)
Kr. 117,28/unit
In Stock
Pilz PNOZ X3, 24V ac/dc Safety Relay, 3 Safety Contacts, 1
  • RS Stock No. 245-1848
  • Mfr. Part No. 774310
Subtotal (1 unit)
Kr. 3 110,79(exc. VAT)
Kr. 3 110,79/unit
In Stock
Pilz PNOZ X3, 230V ac/dc, 24 V ac/dc Safety Relay, 3 Safety Contacts, 1
  • RS Stock No. 245-1854
  • Mfr. Part No. 774318
Subtotal (1 unit)
Kr. 3 110,79(exc. VAT)
Kr. 3 110,79/unit
In Stock
Omron Power Relay, 24V dc Coil, 5A Switching Current, DPDT
  • RS Stock No. 329-7241
  • Mfr. Part No. G2R-2-SNI 24VDC (S)
Subtotal (1 unit)
Kr. 130,45(exc. VAT)
Kr. 130,45/unit
In Stock
PR Electronics 4100 Series Universal Transmitter, Universal Input, Current/Voltage Output, 21.6 V ac, 253 V ac, 19.2V
  • RS Stock No. 796-6887
  • Mfr. Part No. 4114
Subtotal (1 unit)
Kr. 2 655,22(exc. VAT)
Kr. 2 655,22/unit
In Stock
Phoenix Contact, 24V dc Safety Relay, NC, 4 NO Safety Contacts
  • RS Stock No. 129-525
  • Mfr. Part No. 2981949
Subtotal (1 unit)
Kr. 1 664,75(exc. VAT)
Kr. 1 664,75/unit
In Stock
Finder 80 Series DIN Rail Timer Relay, 1-Contact, 12 to 240 V ac/dc 12V ac, 240 V ac, 0.1 to 20 min, 0.1 to 24 h, 0.1 to
  • RS Stock No. 446-0327
  • Mfr. Part No. 80.01.0.240.0000
Subtotal (1 unit)
Kr. 799,77(exc. VAT)
Kr. 799,77/unit
In Stock
Phoenix Contact PCB Power Relay, 24V dc Coil, 6A Switching Current, SPDT
  • RS Stock No. 290-1416
  • Mfr. Part No. 2961105
Subtotal (1 unit)
Kr. 89,55(exc. VAT)
Kr. 89,55/unit
In Stock
PR Electronics Programming Display, Current Output, 20V, 6.5 V Supply
  • RS Stock No. 238-0641
  • Mfr. Part No. 4510
Subtotal (1 unit)
Kr. 843,01(exc. VAT)
Kr. 843,01/unit
In Stock
Weidmüller TRS Series Interface Relay, DIN Rail, 24V Coil, SPDT, 10mA
  • RS Stock No. 892-8789
  • Mfr. Part No. 1122770000
Subtotal (1 unit)
Kr. 183,73(exc. VAT)
Kr. 183,73/unit
In Stock
Phoenix Contact PLC-RSC-24DC/21 Series Interface Relay, DIN Rail, 24V dc Coil, SPDT, 9mA
  • RS Stock No. 358-8301
  • Mfr. Part No. 2966171
Subtotal (1 unit)
Kr. 172,16(exc. VAT)
Kr. 172,16/unit
In Stock
PR Electronics 2 Channel Galvanic Barrier, ATEX
  • RS Stock No. 796-6979
  • Mfr. Part No. 5202B2
Subtotal (1 unit)
Kr. 2 630,06(exc. VAT)
Kr. 2 630,06/unit
In Stock
Schneider Electric Preventa, 24V ac/dc Safety Relay, 3 Safety Contacts, 4
  • RS Stock No. 200-6133
  • Mfr. Part No. XPSUAF13AP
Subtotal (1 unit)
Kr. 2 254,87(exc. VAT)
Kr. 2 254,87/unit
In Stock
Omron G7SA, 24V dc Safety Relay
  • RS Stock No. 836-2738
  • Mfr. Part No. G7SA-5A1B DC24
Subtotal (1 unit)
Kr. 548,95(exc. VAT)
Kr. 548,95/unit
In Stock
Weidmüller ACT20P Series Signal Converter, Current Input, Current Output, 30V Supply, IECEx, ATEX
  • RS Stock No. 287-5326
  • Mfr. Part No. 7760054122
Subtotal (1 unit)
Kr. 1 766,68(exc. VAT)
Kr. 1 766,68/unit
In Stock
RS PRO Monitoring Relay, 3 Phase, DIN Rail
  • RS Stock No. 132-172
Subtotal (1 unit)
Kr. 171,60(exc. VAT)
Kr. 171,60/unit
In Stock
RS PRO DIN Rail Timer Relay, 1-Contact, 12 to 230 V dc 12V ac, 240 V ac, 0.1 s to 100 h, Multifunction-Function, SPDT
  • RS Stock No. 178-3459
Subtotal (1 unit)
Kr. 704,48(exc. VAT)
Kr. 704,48/unit
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