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

15815 Products showing for Relays & Signal Conditioning

1 of 791
In Stock
RS PRO 8 Way 300V DIN Rail Relay Socket, for use with RS PRO RKL Relays DPDT
  • RS Stock No. 121-7825
Subtotal (1 unit)
$12.12(exc. GST)
$12.12/unit
In Stock
RS PRO 175 1M Series DIN Rail Timer Relay, 1-Contact, 240 V dc 12V ac, 240 V ac, 0.1 s to 100 h, Multifunction-Function,
  • RS Stock No. 896-6813
Subtotal (1 unit)
$82.75(exc. GST)
$82.75/unit
In Stock
Finder 4C Series Interface Relay, DIN Rail, 24V dc Coil, DPDT, 20mA
  • RS Stock No. 154-362
  • Mfr. Part No. 4C.02.9.024.0050SPA
Subtotal (1 unit)
$41.92(exc. GST)
$41.92/unit
In Stock
RS PRO Plug-in Power Relay, 240V ac Coil, 10A Switching Current, DPDT
  • RS Stock No. 450-0403
Subtotal (1 unit)
$17.44(exc. GST)
$17.44/unit
In Stock
Finder 97 8 Way 250V ac DIN Rail Relay Socket, for use with 46.52 Series Relay
  • RS Stock No. 534-8868
  • Mfr. Part No. 97.02SPA
Subtotal (1 unit)
$15.77(exc. GST)
$15.77/unit
In Stock
Omron Power Relay, 24V dc Coil, 10A Switching Current, DPDT
  • RS Stock No. 828-7328
  • Mfr. Part No. LY2N 24VDC
Subtotal (1 unit)
$32.14(exc. GST)
$32.14/unit
Limited stock
Omron LY 8 Way 2000V DIN Rail Relay Socket, for use with LY Series Bi-polar Relay
  • RS Stock No. 235-5440
  • Mfr. Part No. PTFZ-08-E
Subtotal (1 unit)
$16.16(exc. GST)
$16.16/unit
In Stock
i-Autoc KSI Series Solid State Relay, 40 A Load, Panel Mount, 280 V ac Load, 32V Control
  • RS Stock No. 903-2970
  • Mfr. Part No. KSI240D40-L
Subtotal (1 unit)
$69.27(exc. GST)
$69.27/unit
Limited stock
Omron P2RFZ 250V ac Surface Relay Socket, for use with Push-In Plus Socket
  • RS Stock No. 196-2321
  • Mfr. Part No. P2RFZ-05-E
Subtotal (1 unit)
$16.40(exc. GST)
$16.40/unit
In Stock
Finder Solid State Interface Relay, Control:26.4V DIN Rail Push-in
  • RS Stock No. 819-8798
  • Mfr. Part No. 39.00.7.024.9024
Subtotal (1 unit)
$44.65(exc. GST)
$44.65/unit
In Stock
Omron Power Relay, 24V dc Coil, 5A Switching Current, DPDT
  • RS Stock No. 329-7241
  • Mfr. Part No. G2R-2-SNI 24VDC (S)
Subtotal (1 unit)
$30.49(exc. GST)
$30.49/unit
In Stock
Finder Relay, 24V dc Coil, 7A Switching Current, 4PDT
  • RS Stock No. 776-1664
  • Mfr. Part No. 55.34.9.024.0074
Subtotal (1 unit)
$25.54(exc. GST)
$25.54/unit
In Stock
Finder Relay, 24V dc Coil, 8A Switching Current, DPDT
  • RS Stock No. 534-5336
  • Mfr. Part No. 46.52.9.024.0074
Subtotal (1 unit)
$22.78(exc. GST)
$22.78/unit
In Stock
RS PRO Power Relay, 24V Coil, 8A Switching Current, DPDT
  • RS Stock No. 144-1602
Subtotal (1 unit)
$15.55(exc. GST)
$15.55/unit
In Stock
TE Connectivity Automotive Relay, 12 V dc Coil Voltage, 40 A Switching Current, SPDT
  • RS Stock No. 308-0598
  • Mfr. Part No. V23134A1052C643 5-1393302-8
Subtotal (1 unit)
$24.45(exc. GST)
$24.45/unit
Limited stock
Phoenix Contact PLC-OPT- 24DC/ 48DC/100 Solid State Interface Relay DIN Rail Push-in
  • RS Stock No. 711-4715
  • Mfr. Part No. 2900352
Subtotal (1 unit)
$26.45(exc. GST)
$26.45/unit
In Stock
Omron 11 Way 250V ac DIN Rail Relay Socket, for use with MK3PND-5-S, MK3PV-5-S, MK3PNV-5-S, MK3P-5-S, MK3PND-5-I,
  • RS Stock No. 353-663
  • Mfr. Part No. PF113A-E
Subtotal (1 unit)
$23.18(exc. GST)
$23.18/unit
In Stock
RS PRO Monitoring Relay, 1 Phase, DIN Rail
  • RS Stock No. 132-174
Subtotal (1 unit)
$33.16(exc. GST)
$33.16/unit
In Stock
PR Electronics Programming Display, Current Output, 20V, 6.5 V Supply
  • RS Stock No. 238-0641
  • Mfr. Part No. 4510
Subtotal (1 unit)
$187.24(exc. GST)
$187.24/unit
In Stock
Finder 38 Series Electromechanical Interface Relay, DIN Rail, 24V dc Coil, SPDT, 10.4mA
  • RS Stock No. 386-4419
  • Mfr. Part No. 38.51.7.024.0050
Subtotal (1 unit)
$35.54(exc. GST)
$35.54/unit
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