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

5 of 870
Stocked by manufacturer
Omron G3PA Series Solid State Relay, 10 A Load, DIN Rail Mount, 264 V ac/dc Load, 24V ac/dc Control
  • RS Stock No. 266-377
  • Mfr. Part No. G3PA-210B-VD-X DC5-24
Subtotal (1 unit)
PHP3,305.56(exc. VAT)
PHP3,305.56/unit
Limited stock
Omron P2RFZ 2 Way 250V ac Surface Relay Socket, for use with Push-In Plus Socket
  • RS Stock No. 196-2322
  • Mfr. Part No. P2RFZ-08-E
Subtotal (1 unit)
PHP947.43(exc. VAT)
PHP947.43/unit
In Stock
Better World
Schneider Electric Monitoring Relay, 1 Phase, DPDT, DIN Rail, 0.15A to 15A, 240 V dc, 240V ac
  • RS Stock No. 145-976
  • Mfr. Part No. RM35JA32MW
Subtotal (1 unit)
PHP13,459.70(exc. VAT)
PHP13,459.70/unit
In Stock
Weidmüller ACT20P Series Signal Converter, Current Input, Current Output, 30V Supply, IECEx, ATEX
  • RS Stock No. 287-5326
  • Mfr. Part No. 7760054122
Subtotal (1 unit)
PHP11,298.45(exc. VAT)
PHP11,298.45/unit
In Stock
RS PRO Monitoring Relay, 1 Phase, DIN Rail
  • RS Stock No. 132-171
Subtotal (1 unit)
PHP1,679.67(exc. VAT)
PHP1,679.67/unit
In Stock
Weidmüller ACT20X Series Signal Conditioner, Current Input, Current Output, 19.2V, 31.2 V Supply, IECEx
  • RS Stock No. 902-8032
  • Mfr. Part No. 8965460000
Subtotal (1 unit)
PHP21,555.96(exc. VAT)
PHP21,555.96/unit
In Stock
Better World
Schneider Electric Harmony Relay Series Solid State Relay, 10 A Load, Panel Mount, 300 V ac Load, 32V dc Control
  • RS Stock No. 904-5633
  • Mfr. Part No. SSP1A110BDT
Subtotal (1 unit)
PHP3,039.70(exc. VAT)
PHP3,039.70/unit
In Stock
Omron H3YN Series Timer Relay, 4-Contact, 100 to 120 V ac 100V ac, 120 V ac, 0.1 to 600 s, Multifunction-Function, DPDT
  • RS Stock No. 264-1671
  • Mfr. Part No. H3YN-2 100-120VAC
Subtotal (1 unit)
PHP6,363.03(exc. VAT)
PHP6,363.03/unit
In Stock
Phoenix Contact DIN Rail Power Relay, 230V ac Coil, 8A Switching Current, 3PDT
  • RS Stock No. 794-3636
  • Mfr. Part No. 2903276
Subtotal (1 unit)
PHP1,715.14(exc. VAT)
PHP1,715.14/unit
In Stock
RS PRO 11RD Series DIN Rail Timer Relay, 1-Contact, 24 V dc 110V ac, 24 V ac, 0.3 s to 30 h, 1-Function, SPDT Switch
  • RS Stock No. 896-6829
Subtotal (1 unit)
PHP2,094.88(exc. VAT)
PHP2,094.88/unit
In Stock
ABB PCB Power Relay, 230V ac Coil, 8A Switching Current, SPDT
  • RS Stock No. 775-5205
  • Mfr. Part No. 1SVR405601R3000 CR-P230AC2
Subtotal (1 unit)
PHP852.79(exc. VAT)
PHP852.79/unit
In Stock
TE Connectivity Plug-In Mini ISO Bracket Relay Socket, for use with Plug-in Mini ISO Relays
  • RS Stock No. 217-5353
  • Mfr. Part No. 1-1904045-2
Subtotal (1 pack of 5 units)
PHP378.18(exc. VAT)
PHP75.636/unit
In Stock
Carlo Gavazzi Monitoring Relay, 1 Phase, DIN Rail, 2A to 200A, 40 V dc
  • RS Stock No. 286-4868
  • Mfr. Part No. DIA53S72450AF
Subtotal (1 unit)
PHP6,655.27(exc. VAT)
PHP6,655.27/unit
In Stock
RS PRO TCR Series Panel Timer Relay, 2-Contact, 24 V dc 220V ac, 0.1 s to 300 h, 1-Function, 2 x SPDT Switch
  • RS Stock No. 179-2923
Subtotal (1 unit)
PHP4,527.71(exc. VAT)
PHP4,527.71/unit
In Stock
Finder Power Relay, 24V dc Coil, 7A Switching Current, 4PDT
  • RS Stock No. 385-929
  • Mfr. Part No. 55.34.9.024.0040
Subtotal (1 unit)
PHP1,114.00(exc. VAT)
PHP1,114.00/unit
In Stock
RS PRO Plug-in Power Relay, 240V ac Coil, 10A Switching Current, DPDT
  • RS Stock No. 450-0403
Subtotal (1 unit)
PHP527.95(exc. VAT)
PHP527.95/unit
Temporarily out of stock
Omron MY Series Power Relay, 10 A Load, Plug-in Mount, 250 V ac Load, 24V Control
  • RS Stock No. 749-194
  • Mfr. Part No. MY2N-D1-GS-R DC24
Subtotal (1 unit)
PHP1,198.65(exc. VAT)
PHP1,198.65/unit
In Stock
RS PRO PCB Reed Relay, 5 V dc Coil, SPDT, 175 V dc Max, 0.25 A Max, 200 Ω
  • RS Stock No. 291-9704
Subtotal (1 unit)
PHP1,054.85(exc. VAT)
PHP1,054.85/unit
In Stock
Finder PCB Relay, 24V dc Coil, 6A Switching Current, SPDT
  • RS Stock No. 457-2846
  • Mfr. Part No. 34.51.7.024.0010
Subtotal (1 unit)
PHP506.96(exc. VAT)
PHP506.96/unit
In Stock
Omron Monitoring Relay, 3 Phase, SPDT, DIN Rail, 240V ac 24 V dc
  • RS Stock No. 819-3248
  • Mfr. Part No. K8AK-LS1 24VAC/DC
Subtotal (1 unit)
PHP11,105.60(exc. VAT)
PHP11,105.60/unit
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