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

17784 Products showing for Relays & Signal Conditioning

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1 of 890
In Stock
Panasonic AQ-H Series Solid State Relay, 0.9 A Load, PCB Mount, 600 V Load, 1.3V Control
  • RS Stock No. 699-6519
  • Mfr. Part No. AQH2223
Subtotal (1 unit)
PHP106.72(exc. VAT)
PHP106.72/unit
In Stock
Schneider Electric Power Relay, 125V dc Coil, 8A Switching Current, 4PDT
  • RS Stock No. 884-1553
  • Mfr. Part No. RXM4AB2GD
Subtotal (1 unit)
PHP824.26(exc. VAT)
PHP824.26/unit
In Stock
Schneider Electric Harmony Relay RXG Series Interface Relay, DIN Rail, 230V ac Coil, DPDT
  • RS Stock No. 203-5211
  • Mfr. Part No. RXG21P7PV
Subtotal (1 unit)
PHP1,514.49(exc. VAT)
PHP1,514.49/unit
Limited stock
Carlo Gavazzi Relay Socket, for use with RMI Series Relay
  • RS Stock No. 856-8337
  • Mfr. Part No. ZMI4NA
Subtotal (1 unit)
PHP1,234.21(exc. VAT)
PHP1,234.21/unit
In Stock
RS PRO BM Series Signal Conditioner, Current Input, Current Output, 30V dc, 9 V dc Supply
  • RS Stock No. 466-2264
Subtotal (1 unit)
PHP23,433.55(exc. VAT)
PHP23,433.55/unit
Temporarily out of stock
TE Connectivity Solid State Relay, 25 A Load, 280 Vrms Load, 32V Control
  • RS Stock No. 715-0846
  • Mfr. Part No. SSR-240D25 1393030-7
Subtotal (1 unit)
PHP3,081.77(exc. VAT)
PHP3,081.77/unit
In Stock
RS PRO LCIS Series Interface Relay, DIN Rail, 24V dc Coil, SPDT
  • RS Stock No. 888-6877
Subtotal (1 pack of 5 units)
PHP5,436.79(exc. VAT)
PHP1,087.358/unit
In Stock
ENTES Current Monitoring Relay, 1 Phase, 1 CO Relay Output, DIN Rail, 0.5A to 60A, 230V ac
  • RS Stock No. 628-948
  • Mfr. Part No. AKC-01D
Subtotal (1 unit)
PHP4,189.01(exc. VAT)
PHP4,189.01/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)
PHP5,568.24(exc. VAT)
PHP5,568.24/unit
In Stock
Carlo Gavazzi Monitoring Relay, 3 Phase, 177/550 V ac Monitor Range, SPDT, DIN Rail, 208V ac, 480 V ac 24 V dc
  • RS Stock No. 857-7662
  • Mfr. Part No. DPA51CM44
Subtotal (1 unit)
PHP7,040.42(exc. VAT)
PHP7,040.42/unit
In Stock
Schneider Electric Power Relay, 24V dc Coil, 8A Switching Current, 4PDT
  • RS Stock No. 884-1313
  • Mfr. Part No. RXM4AB2BD
Subtotal (1 unit)
PHP1,046.52(exc. VAT)
PHP1,046.52/unit
In Stock
Pilz PNOZ X2.1, 24V ac/dc Safety Relay, 2 Safety Contacts, 1
  • RS Stock No. 239-1055
  • Mfr. Part No. 774306
Subtotal (1 unit)
PHP21,782.47(exc. VAT)
PHP21,782.47/unit
Temporarily out of stock
Omron Power Relay, 24V dc Coil, 10A Switching Current, DPDT
  • RS Stock No. 271-1911
  • Mfr. Part No. MY2-GS-R DC24
Subtotal (1 unit)
PHP639.30(exc. VAT)
PHP639.30/unit
In Stock
Pepperl + Fuchs Zener Barrier, ATEX
  • RS Stock No. 793-4278
  • Mfr. Part No. Z728
Subtotal (1 unit)
PHP10,808.13(exc. VAT)
PHP10,808.13/unit
In Stock
Weidmüller TOS Solid State Interface Relay 3V dc, 48 V dc DIN Rail Screw
  • RS Stock No. 892-8827
  • Mfr. Part No. 1126940000
Subtotal (1 unit)
PHP1,873.06(exc. VAT)
PHP1,873.06/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)
PHP568.03(exc. VAT)
PHP568.03/unit
In Stock
RS PRO Plug-in Power Relay, 110V ac Coil, 12A Switching Current, 4PDT
  • RS Stock No. 613-3689
Subtotal (1 unit)
PHP772.92(exc. VAT)
PHP772.92/unit
Temporarily out of stock
Omron Power Relay, 125V dc Coil, 10A Switching Current, DPDT
  • RS Stock No. 192-464
  • Mfr. Part No. LY2 DC125
Subtotal (1 unit)
PHP688.02(exc. VAT)
PHP688.02/unit
In Stock
RS PRO Interface Relay, DIN Rail, 24V ac/dc Coil, SPDT, 6A
  • RS Stock No. 282-4473
Subtotal (1 unit)
PHP946.16(exc. VAT)
PHP946.16/unit
In Stock
Omron Panel Power Relay, 12V dc Coil, 16A Switching Current, SPDT
  • RS Stock No. 365-0535
  • Mfr. Part No. G2RL-1-E DC12
Subtotal (1 unit)
PHP194.91(exc. VAT)
PHP194.91/unit
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