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

808 of 859
Celduc SK Series Solid State Relay, 10 A Load, PCB Mount, 280 V ac Load, 32 V dc Control
  • RS Stock No. 372-8846
  • Mfr. Part No. SKH20120
Each
SGD77.91(exc. GST)
Vishay VOR1121B6 Series Solid State Relay, 370 mA Load, Surface Mount, 250 V ac/dc Load
  • RS Stock No. 244-4877
  • Mfr. Part No. VOR1121B6
Each (In a Tube of 50)
SGD2.09(exc. GST)
TE Connectivity Surface Mount Signal Relay, 12V dc Coil, 2A Switching Current, DPDT
  • RS Stock No. 515-498
  • Mfr. Part No. IM26GR
Each
SGD6.67(exc. GST)
Omron H3DK Series DIN Rail Mount Timer Relay, 24-240V ac/dc, 2-Contact, 0.1 → 4320000s, SPDT
  • RS Stock No. 264-1642
  • Mfr. Part No. H3DK-S1 24-240VAC/DC
Each
SGD73.68(exc. GST)
Jelsystem J2 Series Solid State Relay, 2 A Load, PCB Mount, 264 Vrms Load, 18 Vdc Control
  • RS Stock No. 459-748
  • Mfr. Part No. J2C-202M
Each
SGD4.56(exc. GST)
Broadcom Solid State Relay, 0.6 A Load, PCB Mount, 60 V Load, 1.7 V Control
  • RS Stock No. 693-6885
  • Mfr. Part No. ASSR-1410-003E
Each
SGD5.95(exc. GST)
Tele V2ZR10 Series DIN Rail Mount Timer Relay, 24 → 240V ac/dc, 1-Contact, 0.05 → 1s, 1-Function, SPDT
  • RS Stock No. 798-3520
  • Mfr. Part No. V2ZR10 24-240V AC/DC
Each
SGD85.03(exc. GST)
TE Connectivity PCB Mount Non-Latching Relay, 24V dc Coil, 30A Switching Current, SPDT, SPST
  • RS Stock No. 237-3891
  • Mfr. Part No. 1558666-7
Each
SGD4.27(exc. GST)
Omron PCB Mount Signal Relay, 12V dc Coil, 1A Switching Current, DPDT
  • RS Stock No. 365-0412
  • Mfr. Part No. G6K-2G-Y DC12
Each
SGD6.54(exc. GST)
Elesta PCB Mount Force Guided Relay, 12V dc Coil Voltage, 4PST, SPST, SPST
  • RS Stock No. 554-803
  • Mfr. Part No. SIP 512 12VDC
Each
SGD60.32(exc. GST)
Omron DIN Rail Latching Power Relay, 12V dc Coil, 10A Switching Current, SPDT
  • RS Stock No. 266-113
  • Mfr. Part No. G2R-1-SND DC12
Each
SGD9.36(exc. GST)
Phoenix Contact DEK-REL- 24/1/AKT Series Interface Relay, Chassis Mount, 24V ac/dc Coil, SPST, 1-Pole
  • RS Stock No. 801-8074
  • Mfr. Part No. 2964063
Each
SGD114.10(exc. GST)
Panasonic PCB Mount Power Relay, 12V dc Coil, 10A Switching Current, SPST
  • RS Stock No. 134-7868
  • Mfr. Part No. ALQ312
Each (In a Box of 100)
SGD1.97(exc. GST)
TE Connectivity PCB Mount Monostable Relay, 12V dc Coil, 16A Switching Current, SPST
  • RS Stock No. 240-8964
  • Mfr. Part No. 4-1415899-9
Each (In a Box of 20)
SGD2.623(exc. GST)
Panasonic PhotoMOS Series Solid State Relay, 0.2 A Load, Surface Mount, 40 V Load
  • RS Stock No. 205-6892
  • Mfr. Part No. AQY221FN2V
Each (In a Tube of 150)
SGD10.307(exc. GST)
TE Connectivity PCB Mount Power Relay, 6V dc Coil, 16A Switching Current, SPDT
  • RS Stock No. 680-3735
  • Mfr. Part No. RT314006
Each
SGD6.25(exc. GST)
Broadcom Solid State Relay, 15 μA Load, Surface Mount, 0.8 V Control
  • RS Stock No. 178-3195
  • Mfr. Part No. ASSR-V621-302E
Each (In a Tube of 50)
SGD4.959(exc. GST)
TE Connectivity PCB Mount Monostable Relay, 12V dc Coil, 10A Switching Current, SPST
  • RS Stock No. 240-8929
  • Mfr. Part No. 1461402-6
Each (In a Box of 100)
SGD2.315(exc. GST)
Omron PCB Mount Latching Power Relay, 12V dc Coil, 16A Switching Current, SPST
  • RS Stock No. 827-6319
  • Mfr. Part No. G5RL-K1A-E DC12
Each
SGD6.52(exc. GST)
Gefran GRZ-H Series Solid State Relay, 75 A Load, DIN Rail Mount, 480 V ac Load, 260 V ac Control
  • RS Stock No. 600-759
  • Mfr. Part No. GRZ-H-3P-2S-75-48-A-2-FAN62-0
Each
SGD920.81(exc. GST)
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