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

851 of 859
Sensata / Crydom DR45 Series Solid State Relay, 60 A Load, DIN Rail Mount, 600 V ac Load
  • RS Stock No. 227-0887
  • Mfr. Part No. DR4560D60RPJ
Each
SGD226.24(exc. GST)
Omron G3VM Series Solid State Relay, 700 mA Load, Surface Mount, 60 V Load
  • RS Stock No. 233-4145
  • Mfr. Part No. G3VM-61VY3(TR05)
Each (On a Tape of 500)
SGD1.359(exc. GST)
TE Connectivity PCB Mount Power Relay, 24V dc Coil, 6A Switching Current, SPST
  • RS Stock No. 277-7204
  • Mfr. Part No. 2-1416010-7 RE034024
Each (In a Tube of 25)
SGD3.91(exc. GST)
Omron G3VM Series Solid State Relay, 5 A Load, PCB Mount, 40 V Load, 5V Control
  • RS Stock No. 213-2104
  • Mfr. Part No. G3VM-41HR
Each
SGD11.92(exc. GST)
Omron PCB Mount Power Relay, 12V dc Coil, 8A Switching Current, SPST
  • RS Stock No. 683-8703P
  • Mfr. Part No. G2R-1A4 DC12
Each (Supplied in a Box)
SGD5.95(exc. GST)
RS PRO Analogue Converter, Temperature Input, Current, Voltage Output, 24V ac/dc Supply
  • RS Stock No. 606-322
Each
SGD194.12(exc. GST)
Sensata Cynergy3 PCB Mount Reed Relay, 12V dc Coil, SPST, 350V Max, 0.7 A Max, 1000Ω
  • RS Stock No. 124-5131
  • Mfr. Part No. S2-12PU/RS
Each
SGD25.32(exc. GST)
TE Connectivity Automotive Relay, SPDT
  • RS Stock No. 254-3442
  • Mfr. Part No. 9-1415001-5
Each (In a Box of 50)
SGD134.238(exc. GST)
Sensata Cynergy3 Panel Mount Reed Relay, 24V dc Coil, SPST, 1000V Max, 3 A Max, 780Ω
  • RS Stock No. 189-2459
  • Mfr. Part No. DAR72405PU
Each
SGD70.92(exc. GST)
Sensata Crydom DR67 Series Solid State Relay, 25 A Load, DIN Rail Mount, 600 V ac Load
  • RS Stock No. 227-0888
  • Mfr. Part No. DR6760A25P
Each
SGD352.27(exc. GST)
Finder 41 Series Solid State Relay, 3 A Load, PCB Mount, 240 V ac Load, 17 V dc Control
  • RS Stock No. 708-3112P
  • Mfr. Part No. 41.81.7.012.8240
Each (Supplied in a Tube)
SGD62.68(exc. GST)
Panasonic PhotoMOS Series Solid State Relay, 0.3 A Load, Surface Mount, 400 V Load
  • RS Stock No. 205-6882
  • Mfr. Part No. AQW614EHA
Each (In a Tube of 50)
SGD9.95(exc. GST)
Sensata Crydom DR67 Series Solid State Relay, 25 A Load, DIN Rail Mount, 600 V ac Load
  • RS Stock No. 227-0898
  • Mfr. Part No. DR6760D25RP
Each
SGD358.46(exc. GST)
Phoenix Contact RIF-0-OPT Series Solid State Interface Relay, 28.8 V dc Control, 10 mA Load, DIN Rail Mount
  • RS Stock No. 207-3314
  • Mfr. Part No. 2905295
Each (In a Pack of 10)
SGD42.902(exc. GST)
Gefran GRZ-H Series Solid State Relay 3 Phase, 65 A Load, DIN Rail, Panel Mount, 480 V ac Load, 32 V dc Control
  • RS Stock No. 600-652
  • Mfr. Part No. GRZ-H-3P-3S-65-48-D-0-FAN63-0
Each
SGD920.81(exc. GST)
Sensata Cynergy3 Panel Mount Reed Relay, 12V dc Coil, 7000V Max, 2 A Max, 240Ω
  • RS Stock No. 189-2382
  • Mfr. Part No. DBT71205PU
Each
SGD88.31(exc. GST)
Panasonic Solid State Relay, 0.1 A Load, PCB Mount, 400 V Load, 1.5 V Control
  • RS Stock No. 173-8197
  • Mfr. Part No. AQW214E
Each (In a Tube of 50)
SGD8.843(exc. GST)
Gefran GQ Series Solid State Relay, 50 A Load, Surface Mount, 240 V ac Load, 32 V ac/dc Control
  • RS Stock No. 601-963
  • Mfr. Part No. GQ-50-24-D-0-4
Each
SGD139.63(exc. GST)
Siemens 3RF2 Series Solid State Relay, 600 V Load
  • RS Stock No. 211-4929
  • Mfr. Part No. 3RF2190-3AA06
Each
SGD177.85(exc. GST)
ABB R600 Series Interface Relay, DIN Rail Mount, 24V dc Coil, Solid State, 1A Load
  • RS Stock No. 250-4709
  • Mfr. Part No. 1SNA645527R2600RS
1 Box of 10
SGD656.72(exc. GST)
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