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

17399 Products showing for Relays & Signal Conditioning

6 of 870
In Stock
RS PRO Plug-in Power Relay, 24V dc Coil, 10A Switching Current, DPDT
  • RS Stock No. 450-0425
Subtotal (1 unit)
PHP705.95(exc. VAT)
PHP705.95/unit
In Stock
RS PRO Monitoring Relay, 1 Phase, DIN Rail, 220V ac
  • RS Stock No. 122-215
Subtotal (1 unit)
PHP1,735.05(exc. VAT)
PHP1,735.05/unit
In Stock
Phoenix Contact DIN Rail Power Relay, 230V ac Coil, 5A Switching Current, 4PDT
  • RS Stock No. 794-3670
  • Mfr. Part No. 2903304
Subtotal (1 unit)
PHP1,210.00(exc. VAT)
PHP1,210.00/unit
In Stock
Weidmüller TRZ Series Interface Relay, DIN Rail, 24V Coil, SPDT, 10mA
  • RS Stock No. 892-8846
  • Mfr. Part No. 1122880000
Subtotal (1 unit)
PHP853.34(exc. VAT)
PHP853.34/unit
Last RS stock
Omron Power Relay, 240V ac Coil, 10A Switching Current, 4PDT
  • RS Stock No. 827-7845
  • Mfr. Part No. LY4-AC240
Subtotal (1 unit)
PHP1,380.87(exc. VAT)
PHP1,380.87/unit
In Stock
Omron G3NA Series Solid State Relay, 40 A Load, Surface Mount, 240 V ac Load, 24V ac Control
  • RS Stock No. 214-7944
  • Mfr. Part No. G3NA-240B-UTU DC5-24
Subtotal (1 unit)
PHP5,305.61(exc. VAT)
PHP5,305.61/unit
In Stock
Phoenix Contact MINI MCR Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24V dc Supply, ATEX
  • RS Stock No. 489-2904
  • Mfr. Part No. 2864150
Subtotal (1 unit)
PHP29,249.38(exc. VAT)
PHP29,249.38/unit
In Stock
Phoenix Contact PSR-SCP-24DC/SIM4, 24V dc Safety Relay
  • RS Stock No. 666-7078
  • Mfr. Part No. 2981936
Subtotal (1 unit)
PHP7,642.60(exc. VAT)
PHP7,642.60/unit
In Stock
Omron Power Relay, 24V dc Coil, 5A Switching Current, DPDT
  • RS Stock No. 794-8114
  • Mfr. Part No. G2R-2-SND 24VDC (S)
Subtotal (1 unit)
PHP1,374.99(exc. VAT)
PHP1,374.99/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)
PHP584.26(exc. VAT)
PHP584.26/unit
In Stock
Pilz PNOZ s4 C, 24V dc Safety Relay, 1 NC, 3 NO Safety Contacts
  • RS Stock No. 268-7567
  • Mfr. Part No. 751104
Subtotal (1 unit)
PHP18,708.81(exc. VAT)
PHP18,708.81/unit
In Stock
Omron Power Relay, 24V dc Coil, 10A Switching Current, 4PDT
  • RS Stock No. 827-7891
  • Mfr. Part No. LY4N 24VDC
Subtotal (1 unit)
PHP1,888.44(exc. VAT)
PHP1,888.44/unit
In Stock
TE Connectivity PCB Power Relay, 5V dc Coil, 8A Switching Current, SPDT
  • RS Stock No. 161-4070
  • Mfr. Part No. RY611005
Subtotal (1 tube of 20 units)
PHP4,203.54(exc. VAT)
PHP210.177/unit
Temporarily out of stock
Omron MY Series Power Relay, Plug-in, Plug-in Mount
  • RS Stock No. 271-1904
  • Mfr. Part No. MY2-GS-R AC110/120
Subtotal (1 unit)
PHP622.52(exc. VAT)
PHP622.52/unit
Stocked by manufacturer
Phoenix Contact MINI MCR Series Signal Conditioner, Current Input, Current Output, 30V dc, 9.6 V dc Supply, ATEX
  • RS Stock No. 175-0487
  • Mfr. Part No. 2906447
Subtotal (1 unit)
PHP11,614.34(exc. VAT)
PHP11,614.34/unit
In Stock
ABB Monitoring Relay, SPDT, DIN Rail, 24 V dc 24/240 V ac
  • RS Stock No. 876-5001
  • Mfr. Part No. 1SVR730722R1400 CM-MSS.21S
Subtotal (1 unit)
PHP7,720.02(exc. VAT)
PHP7,720.02/unit
In Stock
Phoenix Contact PCB Power Relay, 24V dc Coil, 8A Switching Current, DPDT
  • RS Stock No. 508-0023
  • Mfr. Part No. 2961192
Subtotal (1 unit)
PHP536.61(exc. VAT)
PHP536.61/unit
In Stock
Turck Power Relay, 125V dc Coil, 6A Switching Current, 4PDT
  • RS Stock No. 842-3735
  • Mfr. Part No. C4-A40X/120-125VDC
Subtotal (1 unit)
PHP6,416.09(exc. VAT)
PHP6,416.09/unit
In Stock
Omron Power Relay, 24V ac Coil, 6A Switching Current, 4PDT
  • RS Stock No. 271-1930
  • Mfr. Part No. MY4-GS-R AC24
Subtotal (1 unit)
PHP745.64(exc. VAT)
PHP745.64/unit
In Stock
Better World
Schneider Electric Power Relay, 120V ac Coil, 5A Switching Current, 2 CO
  • RS Stock No. 922-1770
  • Mfr. Part No. RXG23F7
Subtotal (1 unit)
PHP858.88(exc. VAT)
PHP858.88/unit
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