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.

18567 Products showing for Relays & Signal Conditioning

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  • RS Stock No. 192-3396
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£147.95(exc. VAT)
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  • Mfr. Part No. 55.34.9.024.0040
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£11.98(exc. VAT)
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  • Mfr. Part No. G2R-1-SN 24VDC (S)
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£7.68(exc. VAT)
  • RS Stock No. 353-887
  • Mfr. Part No. G2R-2-SN 24VDC (S)
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£8.70(exc. VAT)
  • RS Stock No. 884-2458
  • Mfr. Part No. 2SC3D11CC3
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£88.20(exc. VAT)
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  • Mfr. Part No. 48.52.7.024.0050SPA
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£18.48(exc. VAT)
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  • Mfr. Part No. 2903334
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£10.10(exc. VAT)
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£10.26(exc. VAT)
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  • Mfr. Part No. 3108
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£176.65(exc. VAT)
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  • Mfr. Part No. G2R-2-SNDI 24VDC (S)
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£11.41(exc. VAT)
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  • Mfr. Part No. RT4S5LC4 1415074-1
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£15.52(exc. VAT)
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  • Mfr. Part No. 628282304000
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£18.09(exc. VAT)
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  • Mfr. Part No. G2R-2-SNI 24VDC (S)
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£8.94(exc. VAT)
  • RS Stock No. 896-6813
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£38.51(exc. VAT)
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  • Mfr. Part No. 3109
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£198.87(exc. VAT)
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£117.53(exc. VAT)
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  • Mfr. Part No. 774306
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£160.16(exc. VAT)
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  • Mfr. Part No. RXM4AB2P7
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£9.19(exc. VAT)
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£33.27(exc. VAT)
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  • Mfr. Part No. MY4IN-GS-R DC24
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£10.21(exc. VAT)
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  • Mfr. Part No. 55.32.9.024.0040
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£11.33(exc. VAT)
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  • Mfr. Part No. LMMT/2 12-230V AC/DC
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£48.71(exc. VAT)
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£12.00(exc. VAT)
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£19.62(exc. VAT)
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  • Mfr. Part No. G2R-1-SNDI 24VDC (S)
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£10.51(exc. VAT)
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  • Mfr. Part No. 2903361
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£7.69(exc. VAT)
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  • Mfr. Part No. 1SVR508020R1100 CT-MFC.21
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£61.80(exc. VAT)
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  • Mfr. Part No. G2RV-1-S-G DC21
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£10.75(exc. VAT)
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£7.70(exc. VAT)
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  • Mfr. Part No. LDRT 115VAC 2-60s/100ms
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£73.98(exc. VAT)
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£8.90(exc. VAT)
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£20.86(exc. VAT)
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£7.78(exc. VAT)
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£32.63(exc. VAT)
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£13.01(exc. VAT)
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£98.30(exc. VAT)
  • RS Stock No. 888-6849
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£10.206(exc. VAT)
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£378.85(exc. VAT)
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£13.11(exc. VAT)
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  • Mfr. Part No. G2R-1-SN 12VDC (S)
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£7.68(exc. VAT)
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  • Mfr. Part No. RM84-2012-35-1024
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£6.06(exc. VAT)
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  • Mfr. Part No. 80.01.0.240.0000
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£77.83(exc. VAT)
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  • Mfr. Part No. RXM4AB2F7
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£8.90(exc. VAT)
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  • Mfr. Part No. 1SNA645034R2300 RB121P-5VDC
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£19.23(exc. VAT)
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  • RS Stock No. 884-1326
  • Mfr. Part No. RXZE2M114M
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£5.82(exc. VAT)
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  • Mfr. Part No. R40N-3011-85-5220
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£9.90(exc. VAT)
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  • Mfr. Part No. 55.34.8.110.0054
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£13.88(exc. VAT)
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  • Mfr. Part No. RY211012
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£3.07(exc. VAT)
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  • Mfr. Part No. MY2IN-GS-R DC24
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£7.76(exc. VAT)
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  • Mfr. Part No. RE034012
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£2.97(exc. VAT)
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  • Mfr. Part No. 55.34.8.024.0054
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£11.93(exc. VAT)
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  • Mfr. Part No. 55.34.9.012.0040
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£11.98(exc. VAT)
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  • Mfr. Part No. DMB51CM24
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£48.59(exc. VAT)
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£10.92(exc. VAT)
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  • Mfr. Part No. ECPF03
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£23.79(exc. VAT)
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£29.90(exc. VAT)
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  • Mfr. Part No. E1ZMQ10 24-240V AC/DC
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£41.97(exc. VAT)
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  • Mfr. Part No. C10-A10X / DC 24 V
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£9.49(exc. VAT)
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  • Mfr. Part No. 1SVR730794R3300 CM-PVS.41S
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£204.21(exc. VAT)
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  • Mfr. Part No. 48.52.8.110.0060SPA
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£22.72(exc. VAT)
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  • Mfr. Part No. 031884 ETR4-51-A
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£126.18(exc. VAT)
  • RS Stock No. 271-1936
  • Mfr. Part No. MY4IN-CR-GS-R AC110/120
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£18.43(exc. VAT)
  • RS Stock No. 264-1622
  • Mfr. Part No. H3CR-A8 100-240VAC/100-125VDC
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£73.25(exc. VAT)
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  • Mfr. Part No. RXG22BD
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£8.82(exc. VAT)
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  • Mfr. Part No. RSL1AB4BD
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£9.48(exc. VAT)
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  • Mfr. Part No. RSB2A080BDPV
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£18.47(exc. VAT)
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  • Mfr. Part No. 2961192
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£8.83(exc. VAT)
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  • Mfr. Part No. D2425PG
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£48.47(exc. VAT)
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£6.84(exc. VAT)
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  • Mfr. Part No. P2RFZ-05-E
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£5.60(exc. VAT)
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  • Mfr. Part No. IK8800.11 DC24V
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£46.47(exc. VAT)
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  • Mfr. Part No. Z728.H
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£92.49(exc. VAT)
  • RS Stock No. 849-6317
  • Mfr. Part No. 2902037
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£189.01(exc. VAT)
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