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

17177 Products showing for Relays & Signal Conditioning

856 of 859
In Stock
Omron PCB Power Relay, 48V dc Coil, 5A Switching Current, DPDT
  • RS Stock No. 683-8729P
  • Mfr. Part No. G2R-2 DC48
Subtotal 1 unit (supplied in a tray)
$14.40(exc. GST)
$14.40/unit
In Stock
Omron PCB Power Relay, 5V dc Coil, 16A Switching Current, SPDT
  • RS Stock No. 683-8804P
  • Mfr. Part No. G2RL-14-E-CF DC5
Subtotal 1 unit (supplied in a tube)
$7.88(exc. GST)
$7.88/unit
Temporarily out of stock
Sensata / Crydom DR45 Series Solid State Relay, 45 A Load, DIN Rail Mount, 600 V ac Load, 280V ac/dc Control
  • RS Stock No. 227-0854
  • Mfr. Part No. DR4560A45P
Subtotal (1 unit)
$292.54(exc. GST)
$292.54/unit
Temporarily out of stock
Carlo Gavazzi NRGC Series Control Relay, DIN Rail, 24V dc Coil
  • RS Stock No. 729-985
  • Mfr. Part No. NRGC-MBTCP
Subtotal (1 unit)
$2,108.14(exc. GST)
$2,108.14/unit
New product - Preorder today
TE Connectivity 13 14 Way Screw Socket
  • RS Stock No. 798-759
  • Mfr. Part No. 1-1393143-9
Subtotal (1 bag of 10 units)
$566.85(exc. GST)
$566.85/bag
Currently unavailable
TE Connectivity Latching Relay, 26.5V dc Coil
  • RS Stock No. 505-860
  • Mfr. Part No. 5-1617559-2
Subtotal (1 unit)
$3,798.02(exc. GST)
$3,798.02/unit
New product - Preorder today
TE Connectivity Through Hole Relay, 115V Coil, 7.5A Switching Current, SPDT
  • RS Stock No. 815-221
  • Mfr. Part No. 7-1393766-2
Subtotal (1 pack of 3 units)
$744.40(exc. GST)
$744.40/pack
Temporarily out of stock
Sensata / Cynergy3 Panel Reed Relay, 5 V dc Coil, SPST, 7000 V dc Max, 2 A Max, 28 Ω
  • RS Stock No. 189-2238
  • Mfr. Part No. DAT70575PU
Subtotal (1 box of 20 units)
$2,330.81(exc. GST)
$2,330.81/box
Temporarily out of stock
Weidmüller Interface Relay Module, DIN Rail, 5V Coil, 1 CO
  • RS Stock No. 577-781
  • Mfr. Part No. 8871050000
Subtotal (1 unit)
$44.24(exc. GST)
$44.24/unit
Temporarily out of stock
Weidmüller TRS Series Interface Relay Module
  • RS Stock No. 600-364
  • Mfr. Part No. 1123180000
Subtotal (1 unit)
$39.49(exc. GST)
$39.49/unit
Stocked by manufacturer
TE Connectivity Board Non-Latching Relay, 12V dc Coil, 16A Switching Current, SPDT-CO
  • RS Stock No. 678-843
  • Mfr. Part No. 7-1393239-0
Subtotal (1 box of 60 units)
$865.68(exc. GST)
$865.68/box
Unavailable
Omron Surface Mount Non-Latching Relay, 4.5V dc Coil, 2A Switching Current, DPDT
  • RS Stock No. 789-7599P
  • Mfr. Part No. G6S-2F 4.5DC
Subtotal 1 unit (supplied in a tube)
$10.70(exc. GST)
$10.70/unit
Temporarily out of stock
Motrona DZ Series Monitoring Module, Universal Input, Analogue Output, 30V Supply, EN IEC 63000
  • RS Stock No. 719-381
  • Mfr. Part No. DZ220/RL
Subtotal (1 unit)
$1,053.10(exc. GST)
$1,053.10/unit
Stocked by manufacturer
TE Connectivity C-A07/B07-SERIES Series Latching Relay, 2 A Load, PCB Mount, 28 V Load
  • RS Stock No. 680-198
  • Mfr. Part No. 8-1617349-0
Subtotal (1 unit)
$7,451.28(exc. GST)
$7,451.28/unit
Stocked by manufacturer
ABB Current Monitor, DIN Rail, 230V ac, 400 V ac
  • RS Stock No. 716-497
  • Mfr. Part No. 2CSJ201001R0002
Subtotal (1 unit)
$1,029.42(exc. GST)
$1,029.42/unit
Stocked by manufacturer
Schneider Electric Protection Module for use with RSZ sockets
  • RS Stock No. 781-836
  • Mfr. Part No. RZM041FU7
Subtotal (1 pack of 10 units)
$100.32(exc. GST)
$100.32/pack
Stocked by manufacturer
Finder DIN Rail Power Relay Module, 120V dc Coil, 30A Switching Current, 2 NO
  • RS Stock No. 248-2653
  • Mfr. Part No. 662290120603S
Subtotal (1 pack of 10 units)
$804.05(exc. GST)
$80.405/unit
Stocked by manufacturer
Schneider Electric Control Relay, 3 Phase, 208 to 480 Monitor Range, 1 CO, Screw, 528V ac 28
  • RS Stock No. 690-579
  • Mfr. Part No. RM10TE00N
Subtotal (1 unit)
$251.69(exc. GST)
$251.69/unit
Unavailable
Vishay Solid State Relay, 0.15 A Load, PCB Mount, 350 V Load, 1.45 V Control
  • RS Stock No. 708-5449P
  • Mfr. Part No. LH1520AB
Subtotal 1 unit (supplied in a tube)
$9.16(exc. GST)
$9.16/unit
Stocked by manufacturer
Moflash Solenoid Driver, Digital, ATEX
  • RS Stock No. 751-930
  • Mfr. Part No. 304983
Subtotal (1 unit)
$733.11(exc. GST)
$733.11/unit
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