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

856 of 859
Finder DIN Rail Non-Latching Relay with Guided Contacts, 110V dc Coil, 6A Switching Current, 3P
  • RS Stock No. 247-9269
  • Mfr. Part No. 7S4391100211
Each (In a Pack of 5)
SGD193.648(exc. GST)
Panasonic PCB Mount Power Relay, 24V dc Coil, 16A Switching Current, SPDT
  • RS Stock No. 173-8890
  • Mfr. Part No. ADJ16024
Each (In a Box of 100)
SGD21.919(exc. GST)
Sensata Crydom GN Series Solid State Relay, 10 A rms Load, Panel Mount, 660 V ac Load, 36 V ac Control
  • RS Stock No. 170-7329
  • Mfr. Part No. 84137112
Each
SGD141.38(exc. GST)
Infineon PVG612 Series Solid State Relay, 2.4 A Load, Surface Mount, 60V ac/dc Load
  • RS Stock No. 830-3433P
  • Mfr. Part No. PVG612S-TPBF
Each (Supplied on a Reel)
SGD11.62(exc. GST)
Siemens 3RP20 Series DIN Rail Mount Timer Relay, 24V ac/dc, 1-Contact, 0.05 s → 100h, 1-Function, SPDT
  • RS Stock No. 124-9401
  • Mfr. Part No. 3RP2025-2AP30
Each
SGD171.35(exc. GST)
RS PRO Temperature Converter, Temperature Input, Current, Voltage Output, 24V ac/dc Supply
  • RS Stock No. 606-324
Each
SGD185.47(exc. GST)
Broadcom ASSR-1410 Series Solid State Relay, 0.6 A Load, Surface Mount, 60 V Load, 1.7 V Control
  • RS Stock No. 174-4165
  • Mfr. Part No. ASSR-1410-503E
Each (In a Pack of 5)
SGD6.566(exc. GST)
Broadcom ASSR-4110 Series Solid State Relay, 0.12 A Load, Surface Mount, 400 V Load, 0.8 V Control
  • RS Stock No. 189-4788
  • Mfr. Part No. ASSR-4110-003E
Each (In a Tube of 100)
SGD3.705(exc. GST)
TE Connectivity SSRMP Series Solid State Relay, 25 A Load, Panel Mount, 480 V Load
  • RS Stock No. 204-7645
  • Mfr. Part No. SSRMP-480D25
Each
SGD44.19(exc. GST)
Finder PCB Mount Power Relay Module, 240V ac Coil, 8A Switching Current
  • RS Stock No. 248-1909
  • Mfr. Part No. 405282400001
Each (In a Pack of 50)
SGD21.589(exc. GST)
Siemens 3RP25 Series DIN Rail Mount Timer Relay, 12 → 240V ac/dc, 1-Contact, 0.5 → 10s, 1-Function, SPDT
  • RS Stock No. 831-6013
  • Mfr. Part No. 3RP2511-2AW30
Each
SGD126.97(exc. GST)
Gefran GRS-H Series Solid State Relay, 15 A Load, DIN Rail, Panel Mount, 600 V ac Load, 260 V ac/dc Control
  • RS Stock No. 601-515
  • Mfr. Part No. GRS-H-15-60-A-5-0-0-0
Each
SGD244.35(exc. GST)
Panasonic PCB Mount Latching Signal Relay, 5V dc Coil, 2A Switching Current, DPDT
  • RS Stock No. 173-9000
  • Mfr. Part No. TXD2L5
Each (In a Tube of 40)
SGD4.065(exc. GST)
Elesta DIN Rail Force Guided Relay, 12 V dc Coil Voltage, 4 Pole, 3PDT
  • RS Stock No. 286-1786
  • Mfr. Part No. SMD319-12VDC (H306586)
1 Tray of 6
SGD1,618.58(exc. GST)
Phoenix Contact 157 Series Electromechanical Interface Relay, DIN Rail Mount, 24V dc Coil, 30A Load
  • RS Stock No. 522-085
  • Mfr. Part No. 1577412
1 Pack of 10
SGD211.78(exc. GST)
Eaton DIN Rail Impulse Relay, 12V ac Coil, 16A Switching Current, DPST
  • RS Stock No. 254-825
  • Mfr. Part No. 265278 Z-S12/SS
1 Pack of 2
SGD104.50(exc. GST)
RS PRO Plug In Timer Relay, 110V ac, 4-Contact, 0.2 → 5min, 1-Function, 4PDT
  • RS Stock No. 179-2973
Each
SGD57.84(exc. GST)
Panasonic PhotoMOS Series Solid State Relay, 0.3 A Load, Surface Mount, 400 V Load
  • RS Stock No. 205-6873
  • Mfr. Part No. AQW214EHA
Each (In a Tube of 50)
SGD7.527(exc. GST)
Gefran GQ Series Solid State Relay, 90 A Load, Surface Mount, 480 V ac Load, 32 V ac/dc Control
  • RS Stock No. 601-937
  • Mfr. Part No. GQ-90-48-A-1-2
Each
SGD220.27(exc. GST)
RS PRO Analogue Converter, Temperature Input, Current, Voltage Output, 24V ac/dc Supply
  • RS Stock No. 606-325
Each
SGD195.00(exc. GST)
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