Relays & Signal Conditioning

At RS, we stock a large choice of relay switch 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 our relay switch products are from trusted electrical relay suppliers 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 operate electronically to turn AC or DC currents on or off within an electrical circuit. Relays operate similar to a typical light switch, where power is switched on and off when the switch lever is moved, but the main difference lies in how 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 switches 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 AC or DC 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' feature semiconductor switching elements; typically thyristors, triacs and diodes that transmit and energise 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.

Shop relays, relay accessories, and signal conditioners isolators at RS today.

Relay Accessories
Relay Accessories
Relays
Relays
Signal Conditioners & Isolators
Signal Conditioners & Isolators

17174 Products showing for Relays & Signal Conditioning

15 of 859
Panasonic Solid State Relay, 4 A Load, PCB Mount, 60 V Load, 5 V dc Control
  • RS Stock No. 699-6632
  • Mfr. Part No. AQZ102
Each
SGD13.07(exc. GST)
Omron Plug In Latching Power Relay, 24V dc Coil, 6A Switching Current, 4PDT
  • RS Stock No. 271-1947
  • Mfr. Part No. MY4IN-GS-R DC24
Each
SGD19.43(exc. GST)
ABB Insulation Monitoring Relay, 1, 3 Phase, DPDT, 0 → 400 V ac, 0 → 600V dc, DIN Rail
  • RS Stock No. 806-5917
  • Mfr. Part No. 1SVR750660R0200 CM-IWN.1S
Each
SGD756.73(exc. GST)
Celduc SO9 Series Solid State Relay, 12 A Load, Panel Mount, 280 V rms Load, 32 V Control
  • RS Stock No. 499-0446
  • Mfr. Part No. SO941460
Each
SGD57.13(exc. GST)
RS PRO Plug In Power Relay, 12V dc Coil, 10A Switching Current, DPDT
  • RS Stock No. 450-0374
Each
SGD11.06(exc. GST)
Finder PCB Mount Power Relay, 24V dc Coil, 10A Switching Current, SPDT
  • RS Stock No. 351-617
  • Mfr. Part No. 40.31.7.024.0000
Each
SGD8.12(exc. GST)
Omron MKS 11 Pin Chassis Mount Relay Socket, for use with Relay
  • RS Stock No. 266-262
  • Mfr. Part No. PF113A
Each
SGD14.77(exc. GST)
TE Connectivity PCB Mount Power Relay, 24V dc Coil, 16A Switching Current, SPST
  • RS Stock No. 680-3818
  • Mfr. Part No. RT334024
Each
SGD6.52(exc. GST)
Finder 80 Series Series DIN Rail Mount Timer Relay, 24 → 240V ac/dc, 1-Contact, 0.05 → 180s, 1-Function,
  • RS Stock No. 221-080
  • Mfr. Part No. 80.61.0.240.0000
Each
SGD96.56(exc. GST)
Phoenix Contact RIF-0-RPT-24DC/1 Series Interface Relay, DIN Rail Mount, 24V dc Coil, SPST, 1-Pole
  • RS Stock No. 794-3761
  • Mfr. Part No. 2903361
Each
SGD17.01(exc. GST)
Omron Plug In Power Relay, 24V dc Coil, 6A Switching Current, 4PDT
  • RS Stock No. 271-1934
  • Mfr. Part No. MY4-GS-R DC24
Each
SGD14.96(exc. GST)
Omron H3CR Series DIN Rail, Panel Mount Timer Relay, 12 → 48 V dc, 24 → 48V ac, 2-Contact, 0.05 s
  • RS Stock No. 328-364
  • Mfr. Part No. H3CR-A8 AC24-48/DC12-48
Each
SGD199.19(exc. GST)
Schmersal SRB E 232ST 1 Auxiliary Contacts Safety Relay 24V dc, Dual-Channel 3 Safety Contacts
  • RS Stock No. 206-5904
  • Mfr. Part No. 103014308
Each
SGD748.85(exc. GST)
Omron H3DK Series DIN Rail Mount Timer Relay, 100 → 120V ac, 1-Contact, 0.1 → 1.2s, 1-Function
  • RS Stock No. 733-4940
  • Mfr. Part No. H3DK-HCS 100-120VAC
Each
SGD183.79(exc. GST)
Pilz PNOZsigma PNOZ s5 C Safety Relay 48 → 240V ac/dc, Dual-Channel 2 Safety Contacts
  • RS Stock No. 191-9865
  • Mfr. Part No. 751135
Each
SGD605.75(exc. GST)
Tele V2ZM10 Series DIN Rail Mount Timer Relay, 12 → 240V ac/dc, 1-Contact, 0.05 → 1s, SPDT
  • RS Stock No. 798-3514
  • Mfr. Part No. V2ZM10 12-240V AC/DC
Each
SGD93.35(exc. GST)
Phoenix Contact RIF-1-RPT-LDP-24DC/2X21 Series Interface Relay, DIN Rail Mount, 24V dc Coil, DPDT, 2-Pole
  • RS Stock No. 794-3721
  • Mfr. Part No. 2903334
Each
SGD18.44(exc. GST)
Omron PCB Mount Non-Latching Relay, 24V dc Coil, 16A Switching Current, SPST
  • RS Stock No. 232-6261
  • Mfr. Part No. G5PZ-1A DC24
Each
SGD4.35(exc. GST)
TE Connectivity 14 Pin 240V ac DIN Rail Relay Socket, for use with PT5 Series
  • RS Stock No. 511-7018
  • Mfr. Part No. PT78740 4-1415033-1
Each
SGD18.08(exc. GST)
Sensata Crydom PMP Series Solid State Relay, 50 A Load, Panel Mount, 280 V ac Load, 10 V dc Control
  • RS Stock No. 145-0604
  • Mfr. Part No. PMP2450W
Each
SGD199.98(exc. GST)
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