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

858 of 859
In Stock
Broadcom Solid State Relay, 0.6 A Load, PCB Mount, 60 V Load, 1.7 V Control
  • RS Stock No. 693-6898
  • Mfr. Part No. ASSR-1420-302E
Each
SGD10.11(exc. GST)
Temporarily out of stock
Carlo Gavazzi RGC1S Series Solid State Relay, 65 A Load, DIN Rail Mount, 600 V ac Load, 32 V dc Control
  • RS Stock No. 188-5277
  • Mfr. Part No. RGC1S60D61GGEP
Each
SGD551.67(exc. GST)
Temporarily out of stock
Eaton DIN Rail Impulse Relay, 230V ac Coil, 16A Switching Current, SPDT
  • RS Stock No. 253-583
  • Mfr. Part No. 265283 Z-S230/SO
1 Pack of 2
SGD104.50(exc. GST)
In Stock
Omron G3VM Series Solid State Relay, 0.7 A Load, PCB Mount, 200 V Load
  • RS Stock No. 225-1602
  • Mfr. Part No. G3VM-201AR
Each
SGD10.24(exc. GST)
Temporarily out of stock
Sensata Cynergy3 Panel Mount Reed Relay, 12V dc Coil, 7000V Max, 2 A Max, 240Ω
  • RS Stock No. 189-2190
  • Mfr. Part No. DBT71205PU
1 Box of 20
SGD1,645.97(exc. GST)
Temporarily out of stock
Broadcom Solid State Relay, 0.12 A Load, PCB Mount, 400 V Load, 1.7 V Control
  • RS Stock No. 693-6911
  • Mfr. Part No. ASSR-4110-003E
Each
SGD4.88(exc. GST)
Temporarily out of stock
Gefran GRS-H Series Solid State Relay, 75 A Load, DIN Rail Mount, 480 V ac Load, 32 V dc Control
  • RS Stock No. 600-819
  • Mfr. Part No. GRS-75-48-D-1-0-0-0
Each
SGD256.38(exc. GST)
Temporarily out of stock
Sensata Cynergy3 Panel Mount Reed Relay, 12V dc Coil, SPST, 1000V Max, 3 A Max, 150Ω
  • RS Stock No. 189-2184
  • Mfr. Part No. DAR71205PU
1 Box of 20
SGD1,299.88(exc. GST)
Temporarily out of stock
Sensata Crydom DR67 Series Solid State Relay, 60 A Load, DIN Rail Mount, 600 V ac Load
  • RS Stock No. 227-0902
  • Mfr. Part No. DR6760D60RP
Each
SGD719.04(exc. GST)
In Stock
Panasonic Surface Mount Signal Relay, 12V dc Coil, 2A Switching Current, DPDT
  • RS Stock No. 699-6342
  • Mfr. Part No. TX2SA-12V-TH
Each
SGD6.90(exc. GST)
In Stock
RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, 150 → 210, 240 → 300V ac, DIN Rail
  • RS Stock No. 558-901
Each
SGD60.88(exc. GST)
Temporarily out of stock
Phoenix Contact PLC-OSC Series Solid State Interface Relay, DIN Rail Mount
  • RS Stock No. 212-7342
  • Mfr. Part No. 2982210
Each (In a Pack of 10)
SGD99.693(exc. GST)
Temporarily out of stock
Sensata Crydom Solid State Relay, 5 A Load, DIN Rail Mount, 80 V dc Load, 36 V ac Control
  • RS Stock No. 740-1324
  • Mfr. Part No. ED10E5
Each
SGD42.18(exc. GST)
Temporarily out of stock
IXYS Solid State Relay, 140 mA Load, Surface Mount
  • RS Stock No. 906-1057
  • Mfr. Part No. CPC1390GR
Each (In a Bag of 5)
SGD3.054(exc. GST)
Last RS stock
Sensata / Crydom DR45 Series Solid State Relay, 60 A Load, DIN Rail Mount, 600 V ac Load
  • RS Stock No. 227-0886
  • Mfr. Part No. DR4560D60RP
Each
SGD225.69(exc. GST)
In Stock
Sensata Crydom DR67 Series Solid State Relay, 75 A Load, DIN Rail Mount, 600 V ac Load
  • RS Stock No. 227-0903
  • Mfr. Part No. DR6760D75P
Each
SGD585.34(exc. GST)
In Stock
Eaton Relay Cover
  • RS Stock No. 179-3525
  • Mfr. Part No. 184759 EMR6-PH22
Each
SGD20.70(exc. GST)
Temporarily out of stock
Panasonic PhotoMOS Series Solid State Relay, 1.5 A Load, Surface Mount, 60 V Load
  • RS Stock No. 205-6919
  • Mfr. Part No. AQY412EHA
Each (In a Tube of 100)
SGD4.978(exc. GST)
Last RS stock
Sensata Crydom CL Series Solid State Relay, 10 A rms Load, Panel Mount, 280 V rms Load, 250 V rms Control
  • RS Stock No. 720-4026
  • Mfr. Part No. CL240A10RC
Each
SGD83.39(exc. GST)
Temporarily out of stock
TE Connectivity PCB Mount Force Guided Relay, 21V dc Coil, 8A Switching Current, 4NO/2NC
  • RS Stock No. 280-8632
  • Mfr. Part No. 2-1558737-7
Each (In a Box of 250)
SGD22.452(exc. GST)
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